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| United States Patent Application |
20030163943
|
| Kind Code
|
A1
|
|
Holmberg, Larry
|
September 4, 2003
|
RANGE FINDER
Abstract
A range finder for hunting applications. In one embodiment, a range finder
includes a cylindrical main housing, a range finder circuit, a display
housing, a display and one or more brackets. The range finder circuit is
contained in the main housing. The display housing is couple to a first
side of the main housing. The display is received in the display housing
and is in electrical communication with the range finding circuit. The
one or brackets are selectively coupled to a second side of the main
housing, wherein the second side of the main housing is opposite the
first side of the main housing. In addition, the one or more brackets are
adapted to couple the main housing to a portion of a hunting weapon.
| Inventors: |
Holmberg, Larry; (Hayward, WI)
|
| Correspondence Address:
|
FOGG AND ASSOCIATES, LLC
P.O. BOX 581339
MINNEAPOLIS
MN
55458-1339
US
|
| Serial No.:
|
090333 |
| Series Code:
|
10
|
| Filed:
|
March 4, 2002 |
| Current U.S. Class: |
42/142 |
| Class at Publication: |
42/142 |
| International Class: |
F41G 001/00 |
Claims
What is claimed is:
1. A range finder circuit comprising: a cylindrical main housing; a range
finder circuit contained in the main housing; a display housing couple to
a first side of the main housing; a display received in the display
housing, the display is in electrical communication with the range
finding circuit; and one or brackets selectively coupled to a second side
of the main housing, the second side of the main housing is opposite the
first side of the main housing, wherein the one or more brackets are
adapted to coupled the main housing to a portion of a hunting weapon.
2. The range finder of claim 1, wherein the main housing further
comprises: a circuit housing to contain the range finding circuit, and a
weather cover to contain a power source, the weather cover is selectively
coupled to the circuit housing, wherein when the weather cover is coupled
to the circuit housing a weather proof seal is created.
3. The range finder of claim 1, wherein the portion of the hunting weapon
is a counterweight of a bow.
4. The range finder of claim 1, wherein the range finder circuit further
comprises: a range finder control circuit to control range finding
operations; a transmitter to transmit a laser signal, the transmitter is
electrically coupled to the range finder control circuit; and a receiver
to receive the reflected laser signal, the receiver is electrically
coupled to the range finder control circuit.
5. The range finder of claim 1, wherein the display housing is coupled to
a mid portion of the main housing.
6. The range finder of claim 1, wherein the portion of the hunting weapon
is a barrel of a firearm.
7. The range finder of claim 6, wherein the circuit housing is positioned
approximate a side of the barrel of the firearm so it will not interfere
with a sight of the firearm, further wherein a longitudinal axis of the
range finder is parallel to a longitudinal axis of the barrel of the
firearm.
8. The range finder of claim 1, further comprising: a remote control unit
to remotely operate the range finding circuit.
9. The range finder of claim 8, wherein the remote control unit is in
wireless communication with the range finding circuit.
10. The range finder of claim 8, wherein the remote unit is electrically
coupled to the range finder circuit by an attaching cord.
11. The range finder of claim 8, wherein the remote control is selectively
coupled to a forearm of a firearm.
12. A range finder comprising: a circuit housing having a first side and a
second side opposite the first side; a range finder circuit to perform
range finding functions contained in the circuit housing; a display
housing coupled to extend from the first side of the circuit housing; a
display encased in the display housing to display distances, the display
in electrical communication with the range finder control circuit; a
weather cover having a first end adapted to selectively couple to a first
end of the circuit housing to form a weatherproof seal and a second
enclosed end; a power supply selectively housed in the weather cover,
wherein when the power supply is housed in the weather cover and the
weather cover is coupled to the circuit housing the power supply is
electrically coupled to supply power to the range finder circuit and the
display; and one or more brackets adapted to couple the second side of
the circuit housing to a weapon.
13. The range finder of claim 12, wherein each of the brackets further
comprises: a first bracket portion having an first inner surface adapted
to fit around a first portion of the weapon; and a second bracket portion
having a second inner surface adapted to fit around a second portion of
the weapon, wherein the first and second portion of the weapon is
positioned between the first and second bracket portion to coupled the
first and second portions to the weapon.
14. The range finder of claim 13, wherein the first and second portions of
the weapon are first and second portions of a barrel of a firearm.
15. The range finder of claim 13, wherein the first and second portions of
the weapon are first and second portion of a counterweight bar of a bow.
16. The range finder of claim 13, further comprising: a first protection
material portion positioned adjacent the first inner surface of the first
bracket portion to protect the first portion of the weapon; and a second
protection material portion positioned between the second inner surface
of the second bracket portion to the first portion of the weapon.
17. The range finder circuit of claim 16, wherein the first and second
protection material have a selected thickness to accommodate the size of
the first and second portions of the weapon.
18. The range finder of claim 13, further comprising: a flange extending
from the second side of the circuit housing for each bracket, each flange
having an adjusting aperture; and a bolt for each flange, each flange is
coupled between a portion of an associated first and second bracket
portion by an associated bolt that is received in the adjusting aperture
of the flange.
19. The range finder circuit of claim 18, wherein each adjusting aperture
has a select lateral length that is greater than a diameter of an
associated bolt to allow the distance between the first and second
brackets and the circuit housing to be adjusted.
20. The range finder of claim 19, wherein the first and second portions of
the weapon are first and second portions of a barrel of a firearm.
21. The range finder of claim 20, wherein a longitudinal axis of the range
finder and weather cover can be adjusted to be parallel with a
longitudinal axis of the barrel of the firearm by the positioning of the
bolt in an adjusting aperture in an associated flange.
22. A range finder comprising: a circuit housing generally cylindrical in
shape having first end with internal threads; a range finder circuit to
perform range finding functions contained in the circuit housing; a
display housing coupled to extend from a select side of the circuit
housing; a display encased in the display housing to display distances,
the display electrically coupled to the range finder circuit to receive
distances signals; a weather cover cylindrical in shape having a first
end with external threads that terminate in a shoulder, the external
threads are adapted to threadably engage the internal threads of the
circuit housing, the weather cover further having a second enclosed end;
and a power supply selectively housed in the weather cover, wherein when
the power supply is housed in the weather cover and the weather cover is
threadably coupled to the circuit housing the power supply is
electrically coupled to the range finder circuit and the display.
23. The range finder of claim 22, further comprising: a seal positioned
adjacent the shoulder of the weather cover, wherein the seal is
compressed to form the weatherproof seal when the external threads of the
weather cover are fully engaged with the internal threads of the circuit
housing.
24. The range finder of claim 22, further comprising a coupling means to
selectively couple the range finder to a barrel of a firearm.
25. The range finder of claim 22, further comprising a coupling means to
selectively couple the range finder to a counterweight bar of a bow.
26. The range finder of claim 22, further comprising a coupling means to
selectively couple the range finder to a firearm scope.
27. The range finder of claim 22, further comprising: a remote control
unit in electrical communication with the range finder circuit to
selectively activate the range finder.
28. The range finder circuit of claim 22, further comprising: one or more
flanges extending from a second side of the circuit housing; and a
bracket for each flange to couple an associated flange to a hunting
object.
29. The range finder of claim 28, wherein the at least one bracket further
comprises: a first bracket portion adapted to fit around a first portion
of the hunting object; and a second bracket portion adapted to fit around
a second portion of the hunting object, wherein the first and second
portion of the hunting object is coupled between the first and second
bracket portions.
30. The range finder of claim 29, wherein the associated flange is coupled
between a portion of the first and second bracket portions to coupled the
first and second bracket portions to the circuit housing with a bolt.
31. The range finder of claim 29, wherein the hunting object is selected
from a group consisting of a barrel of a firearm and a counterweight bar
of a bow.
32. The range finder of claim 31, wherein the select side the display
housing extends from the circuit housing is a first side that is opposite
the second side.
33. The range finder of claim 29, wherein the hunting object is a scope.
34. The range finder of claim 33, wherein the select side the display
housing extends from the circuit housing is the second side of the
circuit housing.
35. The range finder of claim 34, further wherein the display housing
extends from a second end of the circuit housing and is positioned
approximate a portion of a first end of the scope when the range finder
is attached to the scope so that indicia on the display can be seen by
looking through a second end of the scope.
36. A range finder comprising: a main housing; a range finder circuit
contained in the main housing to determine distances to objects; a
display housing extending from the main housing; a display encased in the
display housing, the display is electrically coupled to the range finder
circuit to display one or more indicia representative of distances
determined by the range finder circuit; and one or more brackets coupled
to the range finder housing, the one or more brackets adapted to couple
the range finder housing to a scope.
37. The range finder of claim 36, wherein the display is capable of
producing at least two indicia that convey distances at different
locations of the display.
38. The range finder of claim 37, further wherein a portion of the display
is positioned approximate a portion of a first end of the scope so that
one of the indicia is visible when looking through a second end of the
scope.
39. The range finder of claim 37, further wherein at least one of the
indicia can be seen without looking through the scope.
40. The range finder of claim 36, further comprising: a remote control
unit in electrical communication with the range finder control circuit to
selectively activate the range finder.
41. The range finder of claim 40, wherein the remote control is
selectively coupled to a forearm of the firearm.
42. The range finder of claim 36, wherein the main housing further
comprises; a circuit housing having a first side and a second side
opposite the first side, the range finder circuit is housed in the
circuit housing, the display housing extends from the second side of the
circuit housing adjacent a first end of the circuit housing; a weather
cover selectively coupled to a second end of the circuit housing; and a
power source housed in the weather cover, wherein the power source is
electrically coupled to supply power to the range finder circuits and the
display when the weather cover is coupled to the circuit housing.
43. The range finder of claim 42, wherein the first end of the circuit
housing is cylindrical in shape and a first end of the weather cover that
is selectively coupled to the circuit housing is also cylindrical in
shape.
44. The range finder of claim 43, further comprising: the first end of the
circuit housing having internal threads; and the first end of the weather
cover having external threads terminating in a shoulder, the external
threads are adapted to threadably engage the internal threads of the
circuit housing.
45. The range finder of claim 44, further comprising: a seal positioned
adjacent the shoulder of the weather cover, wherein the seal is
compressed to form the weatherproof seal when the external threads of the
weather cover are fully engaged with the internal threads of the circuit
housing.
46. The range finder of claim 42, further comprising: a flange extending
from the second side of the circuit housing for each of the one or more
brackets to couple each of the one or more brackets to the circuit
housing.
47. The range finder of claim 46, wherein each of the one or more brackets
further comprises: a first bracket portion adapted to fit around a first
portion of the scope; and a second bracket portion adapted to fit around
a second portion of the scope, wherein the first and second portion of
the scope is coupled between the first and second bracket portions,
further an associated flange is coupled between a portion of the first
and second bracket portions to coupled the first and second bracket
portions to the circuit housing.
48. The range finder of claim 47, wherein the associated flange is coupled
between a portion of the first and second bracket portions to coupled the
first and second bracket portions to the circuit housing with a bolt.
49. A method of operating a range finder comprising: powering the range
finder; monitoring for an activation signal; when an activation signal is
received, determining a distance to an object; displaying the distance on
a display; monitoring the time from when the distance was first displayed
on the display; and when a select amount of time has past clearing the
display.
50. The method of claim 49, further comprising: when the select amount of
time has not passed, monitoring for an activation signal; when an
activation signal is detected, activating a range finding circuit; and
displaying the distance determined by the range finding circuit on a
display.
51. The method of claim 49, wherein determining the distance to an object
further comprises: transmitting a laser signal to the object; receiving
the laser signal when it is reflected back off the object; calculating
the transmission time of the laser signal; and using the transmission
time to determine the distance.
52. The method of claim 49, wherein the select amount of time is 30
seconds.
Description
TECHNICAL FIELD
[0001] The present invention relates generally to range finders and in
particular range finders for hunting applications.
BACKGROUND
[0002] Range finders can be a useful tool when hunting for game. A ranger
finder conveys the distance to an object (game target). This information
is helpful to a hunter because it allows a hunter to determine if the
target is beyond the range of a firearm or bow. Knowing the distance to a
target also aids the hunter in the placement of the sight of the firearm
or bow. For example, if the target is a great distance from a firearm, a
hunter can raise the sight of the firearm over the target a select
distance to compensate for the trajectory of a projectile (bullet) fired
from the firearm. The distance found by the range finder can aid the
hunter in determining how much the sight should be raised over the
target.
[0003] Traditional range finders can be disruptive in a hunting situation.
The hunter must operate the hunting weapon and the range finder at the
same time. Moreover, telescopes incorporating range finder circuits are
generally heavy, bulky and expensive to purchase.
[0004] For the reasons stated above and for other reasons stated below
which will become apparent to those skilled in the art upon reading and
understanding the present specification, there is a need in the art for
an inexpensive range finder that is non-disruptive to operate in a
hunting situation.
SUMMARY
[0005] The above-mentioned problems with range finders and other problems
are addressed by the present invention and will be understood by reading
and studying the following specification.
[0006] In one embodiment, a range finder is disclosed. The range finder
includes a cylindrical main housing, a range finder circuit, a display
housing, a display and one or more brackets. The range finder circuit is
contained in the main housing. The display housing is couple to a first
side of the main housing. The display is received in the display housing
and is in electrical communication with the range finding circuit. The
one or brackets are selectively coupled to a second side of the main
housing, wherein the second side of the main housing is opposite the
first side of the main housing. In addition, the one or more brackets are
adapted to couple the main housing to a portion of a hunting weapon.
[0007] In another embodiment another range finder is disclosed. This range
finder comprises a circuit housing, a range finder circuit, a display
housing, a display, a weather cover, a power supply, one or more flanges
and a bracket for each flange. The circuit housing has a first side and a
second side that is opposite the first side. The range finder circuit is
used to perform range finding functions and is contained in the circuit
housing. The display housing is coupled to extend from the first side of
the circuit housing. The display is encased in the display housing and is
used to display distances. The display is in electrical communication
with the range finder control circuit. The weather cover has a first end
that is adapted to be selectively coupled to a first end of the circuit
housing to form a weatherproof seal. The weather cover also has a second
enclosed end. The power supply is selectively housed in the weather
cover. Moreover, when the power supply is housed in the weather cover and
the weather cover is coupled to the circuit housing, the power supply is
electrically coupled to supply power to the range finder circuit and the
display. The one or more flanges extend from the second side of the
circuit housing and each bracket is adapted to couple an associated
flange to a weapon.
[0008] In yet another embodiment, another range finder is disclosed. This
range finder comprises a circuit housing, a range finder circuit, a
display housing, a display, a weather cover and a power supply. The
circuit housing is generally cylindrical in shape and has first end with
internal threads. The range finder circuit is used to perform range
finding functions and is contained in the circuit housing. The display
housing is coupled to extend from a select side of the circuit housing.
The display is encased in the display housing to display distances. The
display is electrically coupled to the range finder circuit to receive
distance signals sent by the range finder circuit. The weather cover is
cylindrical in shape and has a first end with external threads that
terminate in a shoulder. The external threads of the weather cover are
adapted to threadably engage the internal threads of the circuit housing.
The weather cover further has a second enclosed end. The power supply is
selectively housed in the weather cover, wherein when the power supply is
housed in the weather cover and the weather cover is threadably coupled
to the circuit housing, the power supply is electrically coupled to the
range finder circuit and the display.
[0009] In still another embodiment, another range finder is disclosed.
This range finder includes a main housing, a range finder circuit, a
display and one or more brackets. The range finder circuit is contained
in the main housing and is used to determine distances to objects. The
display housing extends from the main housing. The display is encased in
the display housing and is electrically coupled to the range finder
circuit to display one or more indicia representative of distances
determined by the range finder circuit. The one or more brackets are
coupled to the range finder housing and are adapted to couple the range
finder housing to a scope.
[0010] In another embodiment, a method of operating a range finder is
disclosed. The method comprises, powering the range finder. Monitoring
for an activation signal. When an activation signal is received,
determining a distance to an object. Displaying the distance on a
display. Monitoring the time from when the distance was first displayed
on the display. When a select amount of time has past, clearing the
display.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention can be more easily understood and further
advantages and uses thereof more readily apparent, when considered in
view of the description of the preferred embodiments and the following
figures in which:
[0012] FIG. 1 is a side perspective view of one embodiment of the present
invention coupled to a barrel of a firearm;
[0013] FIG. 2 is a rear view of one embodiment of the present invention;
[0014] FIG. 3 is a top view of one embodiment of the present invention
coupled to a barrel of a firearm;
[0015] FIG. 4 is a side partial cut-out view of one embodiment of the
present invention;
[0016] FIG. 5 is a flow chart illustrating the operation of one embodiment
of the present invention;
[0017] FIG. 6 is a side perspective view of one embodiment of the present
invention coupled to a counterweight bar of a bow;
[0018] FIG. 7 is a side perspective view of another embodiment of the
present invention coupled to a scope of a firearm;
[0019] FIG. 8 is a top view of yet another embodiment of the present
invention coupled to a scope of a firearm; and
[0020] FIG. 9 is a rear view of yet another embodiment of the present
invention coupled to a scope.
[0021] In accordance with common practice, the various described features
are not drawn to scale but are drawn to emphasize specific features
relevant to the present invention. Reference characters denote like
elements throughout Figures and text.
DETAILED DESCRIPTION
[0022] In the following detailed description of the preferred embodiments,
reference is made to the accompanying drawings, which form a part hereof,
and in which is shown by way of illustration specific prefer
[0023] red embodiments in which the inventions may be practiced. These
embodiments are described in sufficient detail to enable those skilled in
the art to practice the invention, and it is to be understood that other
embodiments may be utilized and that logical, mechanical and electrical
changes may be made without departing from the spirit and scope of the
present invention. The following detailed description is, therefore, not
to be taken in a limiting sense, and the scope of the present invention
is defined only by the claims and equivalents thereof.
[0024] Embodiments of the present invention relate to range finder that is
adapted to be mounted to a firearm. Referring to FIG. 1, a side
perspective view of one embodiment of a range finder 100 coupled to a
firearm 101 of the present invention is illustrated. As illustrated, the
range finder 100 is coupled to the barrel 112 of the firearm 101 with a
first bracket 116 and a second bracket 118. The range finder 100 of this
embodiment is illustrated as having a cylindrical main housing 103 and a
display housing 102 that extends from a mid portion 105 of the main
housing 103. Main housing 103 includes a circuit housing 104 and a
weather cover 106. Also illustrated in FIG. 1, is remote unit 108. Remote
unit 108 is selectively coupled to the forearm 114 of the firearm by an
adhesive, a loop and hook fastener or the like. The remote control unit
108 has an activation button 109. When the activation button 109 is
depressed, the range finder 100 is activated. The remote control unit
108, of the embodiment of FIG. 1, is electrically coupled to the range
finder by attaching cord 110. In another embodiment, the remote control
unit 108 is in wireless communication with the range finder 100.
[0025] A rear view of one embodiment of a range finder 200 of the present
invention is illustrated in FIG. 2. As illustrated, a display 202 is
encased in the display housing 102. The display may be a liquid crystal
display or other type of display capable of conveying a message. When
activated, the display 202 displays indicia 204 to convey the distance
from the range finder 200 to an object it is pointed at. In the
embodiment of FIG. 2, the indicia 204 conveys the distance in yards and
meters. A brightness control 206 is mounted through the display housing
102 to control the brightness of the display 202.
[0026] Also illustrated in FIG. 2, is first bracket 116. As illustrated,
the first bracket 116 includes a first bracket portion 208 and a second
bracket portion 210. In this embodiment, the first bracket portion 208
fits over a barrel of a firearm and the second bracket portion 210 fits
under the barrel of a firearm. The first bracket portion 208 and the
second bracket portion 210 are coupled together by bolts 216 and 218. In
particular, bolt 216 secures the first bracket portion 208 to the second
bracket portion 210 with nut 217 and bolt 218 secures the first bracket
portion 208 to the second bracket portion 210 with nut 219. In addition,
bolt 216 passes through a connection flange 207 to secure the range
finder 200 to the first bracket 116. As illustrated in FIG. 2, the
display housing 102 extends from a first side 203 of the circuit housing
310 and the flange 207 extends from a second side 205 that is opposite
the first side 203. Moreover, although not shown, the second bracket is
constructed in the same manner to couple the range finder 200 to the
barrel 112 of the firearm 101 at another location.
[0027] Further illustrated in FIG. 2, is a first protective material 212
positioned adjacent a first inner surface 209 of the first bracket
portion 208 and a second protective material 214 positioned adjacent a
second inner surface 211 of the second bracket portion 210. The first and
second protective material 212 and 214 are used to protect the barrel 112
of the firearm 101. Moreover, in one embodiment, the first and second
protective material 212 and 214 come in different thickness to
accommodate different barrel diameters. The first and second protective
material 212 and 214 are made from material such as foam rubber and the
like.
[0028] Referring to FIG. 3, at top view of an embodiment of a range finder
300 of the present invention is illustrated. As illustrated, the range
finder 300 is coupled so that it is positioned along a side 301 of the
barrel 112 of the firearm 101. The positioning of the range finder 300 in
this manner not only allows for a quick viewing of the distance by the
hunter, it is also positioned so as to not interfere with the sight of
the firearm. Embodiments, of the present invention can be mounted on
either side of the barrel 112 of the firearm 101. Also illustrated in
FIG. 3, is an on/off button 306 to turn on and off the range finder 300.
[0029] FIG. 3, further illustrates the barrel longitudinal axis 302 of the
firearm. The barrel longitudinal axis 302 is the path of a bullet fired
from the barrel 302. Further illustrated is a range finder longitudinal
axis 304. The range finder longitudinal axis 304 is the path upon which
the distance is determined. In the embodiments of the present invention,
the range finder longitudinal axis 304 is adjusted to be generally
parallel to the barrel longitudinal axis 302 so the distance of the
bullet path is accurately determined by the range finder 300. Since some
barrels 112 of firearms taper in diameter, a means of compensating to
obtain parallel range finder and barrel longitudinal axis' 304 and 305 in
needed.
[0030] Referring back to FIG. 2, one method of adjusting the position of
the range finder 200 in relation to the barrel 112 to obtain parallel
range finder and barrel longitudinal axis' is illustrated. The connection
flange 207 has an adjusting aperture 220 with a lateral length 230 larger
than the diameter of bolt 216 to allow the first bracket to be spaced at
different distances from the range finder 200. In particular, bolt 216
passes through adjusting aperture 220 in coupling the first bracket to
the range finder 200. Once a desired distance between the barrel of the
firearm and the range finder 200 is achieved, nut 217 is tightened on
bolt 216 thereby snugly coupling the first bracket 116 to the flange 207.
Although not shown, the second bracket 118 is constructed in a similar
manner to aid in aligning the range finder longitudinal axis 304 with the
barrel longitudinal axis 302 of FIG. 3. In further another embodiment
made for a specific barrel, the adjusting aperture 220 is placed in the
flange 207 at a select position to obtain a desired distance between the
first bracket 116 and the range finder 200.
[0031] A side partial cross-sectional view of another range finder 400
embodiment of the present invention is illustrated in FIG. 4. The circuit
housing 104 of the range finder 400 encases or houses the range finder
circuit 401 that includes a range finder control circuit 402, a
transmitter 404 and a receiver 406. The range finder control circuit 402
controls the range finding operations and is in electrical communication
with the display 202, the transmitter 404 and the receiver 406. The
transmitter 404 is used to transmit a laser signal and the receiver 406
is used to receive the signal after it has been reflected off a target
(the object in which the distance to is to be determined). The range
finder control circuit 402 then uses the transit time to determine the
distance to the target. Once the distance has been determined, the range
finder control 334, directs the display 202 to display the distance to
the target. In the above-described embodiment, a range finder
incorporating a light propagation time measuring method to determine the
distance to an object is described. However, it will be understood in the
art that other types of range finders could be used in the present
invention such as the light-section method, the binocular sterosis method
and the like, and the present invention is not limited to the light
propagation time measuring method.
[0032] Also illustrated in FIG. 4, are power sources 408 and 410, which in
this embodiment are batteries 408 and 410. The batteries 408 and 410 are
housed in the weather cover 106 and are selectively coupled to supply
power to the range finder control circuit 402, the transmitter 404, the
receiver 406 and the display 202 when the weather cover is coupled to the
circuit housing. A battery connection 418 is also shown. The weather
cover 106 has a first end 407 and a second end 409. The second end 409 is
enclosed. Moreover, the first end 407 of the weather cover 106 has
external threads 412 that terminate in a shoulder 417. In addition, the
circuit housing 104 has a first end 411 that has internal treads 414 that
are adapted to threadably engage the external threads 412 of the weather
cover 102. A seal 46 is positioned against the shoulder 417 so that when
the external threads 412 of the weather cover 12 are threadably engaged
with the internal threads 414 of the circuit housing 104 and tightened,
the seal 417 is depressed against the shoulder 417 thereby creating a
weatherproof seal. In addition, when the weather cover 106 is coupled to
the circuit housing 104, the batteries 408 and 409 as well as other
internal circuits are protected from weather like rain and snow.
Moreover, when the weather cover 106 is not coupled to the circuit
housing 104, a user has access to the batteries.
[0033] A flow chart 500 illustrating one embodiment of the operation of
the range finder control circuit 402 is illustrated in FIG. 5. Once,
turned on, the range finder control circuit monitors the activation
button 108 (502). Once, the activation button 108 is depressed, a range
finder circuit 401 is activated to determine the distance to an object
(504). The distance to the object is then displayed on display 202 (506).
It is determined if 30 seconds has past since the distance was first
displayed (508). If 30 seconds has not past, the activation button is
monitored to see if it has been depressed (510). If it has not been
depressed, the display continues to display the distance (506). If the
activation button has been depressed, the range finder circuit is once
again activated (504). If 30 seconds has past since the distance was
first displayed, the display is cleared (512). The range finder control
circuit 402 then monitors the activation button to see if it has been
depressed (502). Although, this embodiment uses 30 seconds before
clearing the display, other embodiments of the present invention use
different selected times.
[0034] Another embodiment of a range finder 600 of present invention is
illustrated in FIG. 6. In this embodiment, the range finder 600 is
adapted to be mounted to a counterweight 602 of a bow 620. Since, the
counterweight bar 602 is cylindrical in shape, like the barrel of the
firearm, the method of attachment as illustrated in FIG. 2 is also
applicable in this embodiment. The embodiment of FIG. 6, allows a bow
hunter to use a range finder 600 in a fast and efficient manner without
interfering with the hunt. The bow is illustrated as having a riser 606,
a flexible bow element 612, a cable guard 608, bow string 610 and an
internally threaded metal insert 604 that is adapted to receive external
threads on the counterweight bar 602.
[0035] Referring to FIG. 7, yet another embodiment of the range finder 700
of the present invention is illustrated. As illustrated, this embodiment
is adapted to be coupled to a scope 701 of a firearm 101. The range
finder 700 is coupled to the scope with the first and second brackets 116
and 118 in the same manner the first and second brackets 116 and 118
couple the above-described range finder embodiments to the barrel 112 of
firearm 101 and the counterweight bar 602 of bow 620. Also illustrated in
FIG. 7 is remote control unit 108 and activation button 109 as is
described in the embodiment of FIG. 1. The embodiment of FIG. 7, also
includes a second activation button 720, wherein in this embodiment a
user can either activate the range finder 700 by depressing activation
button 109 or second activation button 720. Moreover, unlike the previous
embodiments, in the embodiment of FIG. 7, the display housing 102 extends
from a first end 802 of the circuit housing 104. This is further
illustrated in the range finder 800 embodiment of FIG. 8. In this
embodiment, the display housing 104 extends approximate a first end 804
of the scope 701. In fact, in this embodiment, the display housing 104
covers a portion of the first end 804 of the scope. FIG. 8 also
illustrates the on/off button that is coupled to turn on and off the
range finder 800 when depressed. Moreover, FIG. 8 further illustrates a
second end 306 of the scope 701. The second end 806 of the scope 701 is
the end in which a user looks through in sighting the scope on a target.
[0036] A rear view of one embodiment of a range finder 900 coupled to a
scope 701 is illustrated in FIG. 9. As illustrated, the display 202 of
this embodiment, uses indicia 204 to convey the distance the range finder
900 determines in two different locations. A first location of the
display 202 with the indicia 204 is above the scope 701, so the user can
determine distances without looking through the scope 701. A second
location of the display 202 with the indicia 204 is in front of a portion
of the scope so it can be viewed by looking through the second end of the
scope 806. In this embodiment, the indicia 204, in the second display
location, is optically adapted so the user can read the conveyed distance
through the scope. Moreover, in this embodiment, the second location of
the display 202 is positioned in front of an upper portion of the first
end 804 of the scope 701 so the distance can be read above a sight 902 of
the scope 701. Placing a portion of the display 202 in front of a portion
of the first end 804 of the scope 701, allows the user the opportunity to
view the distance and the sight 902 of the scope 701 at the same time
thereby allowing the user the opportunity to read the distance without
looking away from the sight 902.
[0037] Although specific embodiments have been illustrated and described
herein, it will be appreciated by those of ordinary skill in the art that
any arrangement, which is calculated to achieve the same purpose, may be
substituted for the specific embodiment shown. This application is
intended to cover any adaptations or variations of the present invention.
Therefore, it is manifestly intended that this invention be limited only
by the claims and the equivalents thereof.
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