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| Patent # | Description |
|---|---|
| US-5,278,541 |
Enhanced reliability in portable rechargeable devices In a postage meter which has a meter section powered by house current in normal operation, but which requires auxiliary power source batteries while in transit,... |
| US-5,278,540 |
Electromechanical earthquake alarm An earthquake sensor in which a weight falls from a support surface and activates a switch in the event of an earthquake. The support surface is preferably a... |
| US-5,278,539 |
Alerting and warning system An emergency alerting system for alerting or warning large numbers of people of the occurrence or threat of an emergency using available communications media.... |
| US-5,278,538 |
Bicycle security system A bicycle security system includes a locking bicycle rack and employs a user's automated teller banking card to operate the system and debit charges accrued in... |
| US-5,278,537 |
Electronic alarm for avoiding collision with animals in a
non-destructive manner An electronic alarm is disclosed for use in a moving vehicle which generates ultrasonic sound for preventing animals from moving into the path of the vehicle.... |
| US-5,278,536 |
Electromagnetic radiation node for use in a network and lighting element
incorporating such a node A network (2) utilizing power conductor distribution and incorporating infra-red (IR) radiation nodes having IR transducers (4, 6, 8). The IR transducers are... |
| US-5,278,535 |
Electrical overstress pulse protection A thin flexible laminate for overlay application on the pins of a connector or other circuit element, having an electrically insulating substrate, a conductive... |
| US-5,278,534 |
Magnetic structure having a mirror A magnetic structure defining a cavity includes a first member of high-permeability material having a flat surface defining a first wall of the cavity, and a... |
| US-5,278,533 |
Coil for use in charged particle deflecting electromagnet and method of
manufacturing the same A coil for use in a deflecting electromagnet in which two coil end portions are bent as well as a method of manufacturing the same. In the coil, a plurality of... |
| US-5,278,532 |
Automotive instrument virtual image display A compact, inexpensive and mass-producible optical display system for an automobile creates a highly visible and sharp, high contrast and pleasing, multi-color... |
| US-5,278,531 |
Molded case circuit breaker having housing elements Molded case circuit breaker having collapsible toggle linkage with rectangular cross section knee pin non-rotatably held within open rectangular slots in upper... |
| US-5,278,530 |
Switch mechanism, mounting assembly, and shaft position indicator device
for a rotary or linear valve A magnetically actuated valve position sensing device for a linear or rotary valve comprising a switch housing completely enclosing one or more magnetic... |
| US-5,278,529 |
Broadband microstrip filter apparatus having inteleaved resonator
sections A broadband microstrip filter structure employs a first transmission line which basically consists of a series of capacitor plates which extend between a... |
| US-5,278,528 |
Air insulated high frequency filter with resonating rods An inexpensive and lightweight air insulated high frequency filter can be made utilizing a radio device's frame and a printed board (15) intended for electrical... |
| US-5,278,527 |
Dielectric filter and shield therefor A filter assembly comprised of a dielectric filter and a shield positioned about the dielectric filter. The dielectric filter may be surface-mounted upon a... |
| US-5,278,526 |
Laminated LC element and method for manufacturing the same A laminated LC element comprises a laminate including a plurality of bonded insulating layers, a first conductor including conductive elements which continuously... |
| US-5,278,525 |
Electrical filter with multiple filter sections An electrical filter having first and second filter sections with respective sets of electrical filter components. These sets of electrical filter components... |
| US-5,278,524 |
Multi-layered printed circuit board with transmission line capabilities A multi-layered printed circuit board for mounting and interconnecting the terminals of multi-terminal electronic components. The circuit board mounts the... |
| US-5,278,523 |
Temperature-stable tuned-circuit oscillator, especially in a proximity
switch The invention relates to a temperature-stable transistorised tuned-circuit oscillator. Provided for the purpose of temperature stabilisation of the tuned-circuit... |
| US-5,278,522 |
High frequency voltage controlled oscillator A phase lock loop operates independent of temperature and process variation by digitally loading a VCO until reaching the desired operating frequency. The VCO... |
| US-5,278,521 |
Power saving frequency synthesizer with fast pull-in feature In a frequency synthesizer, a first, variable frequency divider and a second frequency divider are activated in response to a periodic power activation pulse.... |
| US-5,278,520 |
Phase lock detection in a phase lock loop A phase lock loop monitors a first digital signal and generates a second digital signal operating substantially at frequency and in-phase with the first digital... |
| US-5,278,519 |
Method and apparatus for controlling RF spectral splatter into adjacent
channels when activating an RF transmitter A simple and effective "RF snubber" circuit resolves the problems associated with transient spectral noise caused by radio transmitter activation in nearby... |
| US-5,278,518 |
Amplifying circuit with exponential gain control The invention relates to an amplifying circuit with controlled gain, the gain of which is an exponential function of a gain control voltage. The circuit includes... |
| US-5,278,517 |
FET amplifier with gate voltage control In an amplifier comprising an FET (11) having a gate electrode and source and drain electrodes and a drain bias circuit (19) controlled by an output power... |
| US-5,278,516 |
Buffer circuit A buffer circuit provided with a transistor each on the input and output terminal sides, in which the transistor has been provided in order to keep constant a... |
| US-5,278,515 |
High bandwidth information channel with optocoupling isolation An accurate direct current to 1 MHz (or more) analog information channel with 7.5 kV input to output isolation is provided using a commercially available... |
| US-5,278,514 |
MSK demodulator using one synchronous detector An MSK signal demodulating circuit including a carrier reproducing circuit for reproducing a carrier phase-synchronized with a component of a mark frequency or a... |
| US-5,278,513 |
Continuous condition sensing system A probe developing an admittance with a material whose condition is to be continuously measured is capacitively coupled with a variable frequency oscillator,... |
| US-5,278,512 |
Apparatus and method for continuously monitoring grounding conductor
resistance in power distribution systems A method and apparatus is disclosed for continuously monitoring the resistance of a grounding conductor to neutral conductor circuit of a power distribution... |
| US-5,278,511 |
Compact lamp and circuit tester for vehicles, particularly automobiles A tester for testing sealed lamps and lamp circuits of vehicles includes an elongate housing. The housing has pointed projections extending from one end wall to... |
| US-5,278,510 |
Ionization vacuum gauge using a cold micropoint cathode Ionization vacuum gauge comprising, like Bayard Alpert gauges, in a chamber (1) containing an extremely low pressure atmosphere, whose ultra-vacuum degree it is... |
| US-5,278,509 |
Method for monitoring battery discharge by determining the second
derivative of battery voltage over time The state of charge of a rechargeable battery (12), such as those made from lithium, nickel-cadmium or metal hydrides, can be accurately determined by monitoring... |
| US-5,278,508 |
Diagnostic apparatus displaying engine operating characteristics in the
parameters in which the characteristics... An auto diagnostic apparatus having jawed, needle-toothed clips for connection to variable output wires of engine sensors adjacent to the sensors, and a... |
| US-5,278,507 |
Well logging method and apparatus providing multiple depth of
investigation using multiple transmitters and... An apparatus and method for determining formation resistivity at a plurality of radial distances from an earth borehole uses a single receiver pair and a... |
| US-5,278,506 |
Method and circuit for operating a magnetic resonance imaging apparatus
for producing tomograms in an arbitrary... A method and circuit for operating a magnetic resonance imaging apparatus to produce tomograms in an arbitrary position (plane) generate logic gradients which... |
| US-5,278,505 |
Self-cancelling RF receive coil used to decouple MRI transmit/receive RF
coils In addition to the usual winding of an MRI RF receive coil, a second, opposite sense, winding is connected to the same pair of RF output terminals and linked to... |
| US-5,278,504 |
Gradient coil with off center sweet spot for magnetic resonance imaging An examination region (12) is defined along a z-axis offset from a geometric center (30) of a gradient coil assembly (20). Cylinders of a non-conductive,... |
| US-5,278,503 |
Configuration for the compensation of external magnetic field
interferences in a nuclear resonance spectrometer... In order to compensate external interfering fields inside a superconducting magnet coil, these interfering fields are measured outside of the magnet coil by... |
| US-5,278,502 |
Refrigerated superconducting MR magnet with integrated cryogenic
gradient coils This invention relates to refrigerated superconducting MR magnets having integrated cryogenic gradient coils. In particular, the amount of eddy currents produced... |
| US-5,278,501 |
Method and apparatus for measuring fluid transport properties through
porous media by NMR imaging The fluid transport properties of a porous media are determined by NMR imaging showing the fluid transport properties such as fluid velocity, fluid acceleration,... |
| US-5,278,500 |
Planar, core saturation principle, low flux magnetic field sensor A device is disclosed for measuring low-flux magnetic fields with a sensor operating according to the core saturation principle. The sensor is provided with a... |
| US-5,278,499 |
Fiberoptic apparatus for measuring electromagnetic field intensity with
an electro-optic sensor An electromagnetic field intensity measuring apparatus comprises a sensor located in the electromagnetic field measuring place for receiving the measuring light... |
| US-5,278,498 |
Surface conforming flexible eddy current probe for scanning varying
surface contours A flexible core eddy current probe is disclosed for testing of curved or egular surfaces. The core is comprised of a flexible binder loaded with a powdered... |
| US-5,278,497 |
Magnetic sensor having a magnet-sensitive plane of an MR element
arranged perpendicular to both a substrate... A magnetic sensor which includes a circuit substrate, a ferromagnetic resistant element (MR element) mounted on the substrate in such a manner that a... |
| US-5,278,496 |
High output and environmentally impervious variable reluctance sensor A variable reluctance sensor assembly including an open-ended housing which contains a bobbin assembly with an overmolded connector piece. The bobbin contains a... |
| US-5,278,495 |
Memory and apparatus for a thermally accelerated reliability testing A method for rapidly changing temperatures of either an unpopulated printed circuit board or a completed printed circuit board assembly and testing operation... |
| US-5,278,494 |
Wafer probing test machine A wafer probing test machine including a loading/unloading section defined by a first frame to enclose plurality of cassette stages therein, a test section... |
| US-5,278,493 |
Multimeter having a measurement range switch In multimeters for the selective measurement of different measurable variables having test signals that are detected by the multimeter through the use of various... |
| US-5,278,492 |
Controllable AC power supply for an ozonator An ozonator power supply including a step-up transformer having one end of its primary winding connected to one side of an AC supply, its other end connected to... |
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