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| Patent # | Description |
|---|---|
| US-4,004,143 |
Medical and dental lamp A lamp for illuminating the mouth of a patient which provides an oval pattern of adjustable size and intense illumination which generally conforms to the shape... |
| US-4,004,142 |
Device for regulating the adjustment of vehicle headlights A device for regulating the adjustment of vehicle headlights in response to the vehicle load. The headlights are pivotally mounted in the vehicle body, and a... |
| US-4,004,141 |
Linear/logarithmic analog multiplier An analog device for generating an output signal which is proportional to the linear product between a first input signal and the antilogarithm of the second... |
| US-4,004,140 |
Digital attenuator A digital attenuator is disclosed which is capable of having the output PCM signal attenuated nearly in proportion to the input PCM signal level based upon... |
| US-4,004,139 |
Digital scale with means to shift displayed weight to show fraction of
least normally displayed graduation An improved electronic apparatus for accurately weighing, computing a value and printing a label showing the weight, the price per unit weight and the computed... |
| US-4,004,138 |
Method of and system for controlling temperature of continuous furnace A method of and system for controlling the temperature of a continuous furnace through which steel bodies are transported at a constant speed, in which the... |
| US-4,004,137 |
Readout apparatus for frequency or period-analog measuring signals In the case of frequency-analog measuring values the readout apparatus must be calibrated with respect to two reference points. The readout apparatus comprises a... |
| US-4,004,136 |
Credit verification terminal with dual information sources A credit verification terminal for use in several credit systems includes a dual purpose mechanism for sequentially propelling a user's credit card past a... |
| US-4,004,135 |
Jacquard card to magnetic tape archives storage and retrieval system A Jacquard card is placed in information-transfer relationship with an optical reader. Weave information, including an identification number and number of picks,... |
| US-4,004,134 |
Off-line magnetic card reader system operable as though normally on line A card has two sets of magnetized spots, one set being readable by a reader in an on-line system, and the other set being readable by an off-line reader. Coupled... |
| US-4,004,133 |
Credit card containing electronic circuit An article such as a plastic credit card contains concealed identifying information. The information is in the form of a series of binary information bits and it... |
| US-4,004,132 |
Convertible flashlight-lantern A comprehensive toy camping set which includes a convertible flashlight to lantern combination, a cooking utensil for holding cans of food and preventing the... |
| US-4,004,131 |
Article carrying coded indicia A machine readable binary encoded label having start, data, and stop sections comprising concentric arcuate or linear bars of two different reflectivities. The... |
| US-4,004,130 |
Hot plates A hot plate with a base and a heater plate, both the heater plate and the base being hollow and filled with an expanded and voluminously enlarged foam epoxy... |
| US-4,004,129 |
Food processing oven A biscuit making oven comprises a fabricated chamber externally insulated and having bottom entry and exit openings for an endless conveyor arranged partly... |
| US-4,004,128 |
Portable electric radiant heater A portable electric radiant heater comprises an insulative housing having a control area and an open front heating area. A hollow fired clay pipe system is... |
| US-4,004,127 |
On line fusing system An apparatus for fusing toner images onto flexible support material in which the support material is transported in a path past a flash fusing lamp. The path is... |
| US-4,004,126 |
Windshield heating device A windshield heating device for a motor vehicle having a windshield with an upper portion normally within the driver's field of vision and a lower portion... |
| US-4,004,125 |
Multihead welding gun A multihead welding gun which has one or more self-aligning heads for simultaneously forming 360.degree. welds between the juncture of recessed tubes and a tube... |
| US-4,004,124 |
Method of forming a seam in a body outer panel of a vehicle End portions of first and second panel plates to be joined together are displaced toward the inside and outside of the panel, respectively, by an amount... |
| US-4,004,123 |
Method of and system for the controlling of an apparatus for the
electric discharge machining of a workpiece Discrete electric-discharge pulses are applied across a dielectric-swept gap between an electrode and a workpiece by triggering an ON-OFF switch between its... |
| US-4,004,122 |
Multi-zone microwave heating apparatus A microwave heating oven has a microwave-shielded loading passage and a first heating zone for containing the material in solid form. A second heating zone... |
| US-4,004,121 |
Electrical switch with wire beam spring contact closer An electric switch especially adapted for use in a variety of keyboard applications includes an elongated and generally straight wire beam spring which is... |
| US-4,004,120 |
Switch bezel with visual indicator A switch bezel with a visual indicator mounted thereto. The bezel accommodates a snap-in switch and a snap-in indicator, the combination of which then snaps into... |
| US-4,004,119 |
Electrical switch assembly for a printed circuit board A predetermined pattern of a plurality of conductors are disposed on one surface of a dielectric substrate, a given number of the plurality of conductors each... |
| US-4,004,118 |
Metal clad monophase switchgear panels for high voltages and polyphase
switching plants consisting of such... Metal clad switchgear for high voltages comprising monophase switchgear units, in each of which the circuit-breaker is accommodated in a spherical casing and... |
| US-4,004,117 |
Arcing electrode, more particularly for vacuum switches An arcing electrode in accordance with the invention has a number of plates separated by gaps. The plates are shaped with if necessary, additional plates into a... |
| US-4,004,116 |
Pneumatic cylinder for controlling electrical switch operation A pneumatic switch control has a by-pass air line connected between the air inlet line of a pneumatic cylinder and an air operator which actuates an electrical... |
| US-4,004,115 |
Buckles for vehicle safety belts and harnesses A buckle for a safety belt or harness for a vehicle. The buckle comprises a plate having an aperture defined therein and a casing which separably receives the... |
| US-4,004,114 |
Horn switch for motor vehicles steering wheels A horn switch for motor vehicle steering wheels, including a pushbutton facing the driver in an upper spatial zone above the median plane of the steering wheel,... |
| US-4,004,113 |
Drawout apparatus for electrical switchboards A drawout mechanism includes a carriage mounting a circuit breaker and supported on telescoping rails to facilitate racking movement of the circuit breaker... |
| US-4,004,112 |
Quickly attachable note pad support accessory for desk telephones An accessory having a platform for supporting a note pad in horizontal writing position adapted to mount along the rear of a desk telephone has a pair of... |
| US-4,004,111 |
Horn testing device An apparatus and method for testing electric horns. A sound-detecting fixture includes an elongated progressive wave tube containing a mass of sound-absorptive... |
| US-4,004,110 |
Power supply for power line carrier communication systems Apparatus for powering a signal amplifier or repeater connected to the primary or high-voltage portion of a power distribution system. Oscillator and amplifier... |
| US-4,004,109 |
Hybrid circuit A direct coupled transformerless hybrid for providing signal conversion between a balanced bidirectional transmission path and a pair of unbalanced... |
| US-4,004,108 |
Armature for sound pick-up cartridge A pick-up cartridge includes an armature being attached with a cantilever having a sound needle at an end composed of two pieces of high magnetic permeable... |
| US-4,004,107 |
Telephone circuit to eliminate use of a hold button A circuit arrangement to enable one party to have a two-way conversation simultaneously with an outside party and an internal party. The circuit arrangement... |
| US-4,004,106 |
Line circuit for use with a key telephone system There is provided a line circuit for connection to a key telephone system for indicating an incoming call, a call placed on hold, and an answered call. There is... |
| US-4,004,105 |
Multifrequency signal receiver for use in telephone signaling systems or
the like A receiver well adapted for reception of, for example, multifrequency call signals from a pushbutton telephone and for delivery of corresponding outputs to an... |
| US-4,004,104 |
System for feeding in continuous current to a telephone line A d.c. power supply circuit for a telephone line which utilizes transistor circuits having an active reactance to replace the telephone transformer. The... |
| US-4,004,103 |
Path-finding scheme for a multistage switching network A plurality of idle paths through a multistage switching network which are capable of establishing a connection between a particular line and a particular trunk... |
| US-4,004,102 |
Automatic impedance modification of transmission lines An automatic impedance matching network for a transmission line includes an impedance monitor which provides a control signal for two variable compensators. One... |
| US-4,004,101 |
Method and device for detecting occupancy of telecommunication channels A system for detecting the occupancy of the channels of a telecommunication network and monitoring the transmission of signals, wherein the signals on a... |
| US-4,004,100 |
Group frame synchronization system A group frame synchronization system establishes the frame synchronization to a plurality of time-division multiplexed digital signals by the use of a common... |
| US-4,004,099 |
Time division multiplex switching system A time division multiplex private automatic branch exchange includes a common interchange bus, and as many sampling circuits and associated recirculating shift... |
| US-4,004,098 |
Satellite on-board switching system with satellite-to-satellite link A Space Division Multiple Access (SDMA) Communications satellite system which utilizes a pair of communications satellite relays having a communications link... |
| US-4,004,097 |
Automatic meter reading device A device for automatically reading one or more meters at a remote location and supplying the information read over telephone lines to a central station includes... |
| US-4,004,096 |
Process for extracting pitch information A process is described for extracting the most-likely estimate of pitch f a digitized speech signal. For each segment of speech analyzed, a measure of merit is... |
| US-4,004,095 |
System for time sharing an audio amplifier A switching system is described for accepting N-channel audio information and time sharing N/2 amplifiers to drive N-audio speakers. The time sharing switching... |
| US-4,004,094 |
Enclosure system for sound generators A device for use in an enclosure associated with an audio speaker or other sound producing device and which permits relatively large volume changes within the... |
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