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4737660 Trimmable microminiature force-sensitive switch  
A trimmable microminiature force-sensitive switching device for detecting the state of external conditions, such as pressure, acceleration and temperature, is disclosed. The device includes a...
4733324 Surge arrestor  
This disclosure relates to a voltage surge arrestor for use with an electric device having a component to be protected from a voltage surge. The arrestor comprises at least first and second...
4688025 Movement sensor  
A movement sensor having a movable part, detection means for providing a first detection signal when the part is in one position and a second detection signal when the part is in a different...
4686335 Shock sensor switch  
A vibration sensitive switch has a pair of spaced apart parallel contacts (4) housed in a switch body (1,2,3) and a movably supported activated mass (5) inside a chamber (6) in the body. The mass...
4684928 Motion sensor unit  
A motion sensor unit which includes a sensor assembly for monitoring whether or not the inclination of a mobile member is in excess of a predetermined reference angle and outputting a pulse signal...
4681991 Vibrating sensing device  
The invention provides a vibration sensing device which is used in safety and security equipment. Such devices comprise a main inertia mass on a support assembly to form an electrical switch which...
4682145 Truck level sensing and indicating system  
A level sensing system with a level sensor-data transmitter and a data receiver-display for use particularly with long (18 wheel type) trailer dump trucks plagued with a problem hazard of trailer...
4679033 Structure of vibration sensor  
A new structure of vibration sensor mainly comprising two metal conducting plates on its body, one of which is installed with an adjusting screw and the other with a fixing screw connecting to a...
4673777 Microbeam sensor contact damper  
The present invention consists of an apparatus for damping the movement of a microbeam sensor. The damping device consists of a gold plated chrome bar, or the like being placed, or fabricated,...
4667598 Method and apparatus for detecting different detonating conditions for a follow-up charge  
The conditions for detonating a follow-up charge in a dual stage weapon are etected for detonating the follow-up charge either instantaneously or after a time delay. An instantaneous detonation is...
4668846 Gravity sensing switch for detecting inclination  
A gravity sensing switch determines the level or plumb of an object and relays information with respect to level and/or plumb by a gravity sensitive rotor connected to a power input conductor and...
4651128 Method of monitoring the inclination of a motor vehicle  
An apparatus and method for monitoring the inclination of a motor vehicle, measures the inclination during successive time periods with an inclination-sensitive sensor to produce measured signals;...
4638130 Acceleration sensor  
An acceleration sensor comprises a housing formed with a hollow cavity deing a sensing direction. An acceleration sensing conductive mass is releasably mounted in the cavity. The mass is released...
4628160 Electrical tilt switch  
An electrical tilt switch includes a generally cylindrical cap member having a hollow interior with an internal inwardly extending ridge positioned a significant distance above its lower edge, a...
4618746 Ball actuated position sensitive switch  
The multi-directional switch according to the invention possesses a housing (1), in which at least two electrical contacts (2, 3) are arranged opposite one another, a tilting member (5) being...
4615180 Apparatus for control of a vehicle air conditioner  
An air conditioning control device for an automotive vehicle including an inertial switch, for example, a mercury switch, which is rendered nonconductive when the forward acceleration and/or grade...
4608468 Hermetically sealed impact switch  
An apparatus is disclosed providing a hermetically sealed impact switch that is non-critical to humidity and less susceptible to corrosion. The impact switch consists of a cover, a base, and a...
4594485 Impact sensor  
An impact sensor has a housing with an inner chamber. A first electrical contact extends from the housing and has a contact portion disposed in the chamber. A second electrical contact extends...
4581507 Impact switch  
An apparatus and method is disclosed for providing an impact switch that is non-critical to temperature variations and preload pressures. The impact switch consists of a plate having a pair of...
4581504 Circuit breaker cable and battery post switch  
An electrical circuit breaker in which the circuit is immediately broken by concussive distortion to the unit housing which is secured to a vehicle or aircraft powered by an internal combustion...
4543457 Microminiature force-sensitive switch  
A microminiature switch for digitizing different-valued external conditions, such as pressure, temperature of acceleration, is disclosed. The switch includes a silicon wafer having a deflectable,...
4536629 Gas damped acceleration switch  
A gas damped acceleration switch for use as a vehicle crash-sensing device. A mass is supported for movement along an axis against a spring, the mass actuating a switch only after moving a...
4533799 Electric safety switch with removable conducting rod  
A switch is provided comprising an insulating case supporting two conducting terminals, and a removable conducting rod coming to bear against the terminals so as to establish electric contact. The...
4533801 Inertia switch device  
Movement of an inertia mass (4) from a rest position as a result of acceleration or deceleration in excess of a given threshold value causes a hinge-like assembly (8) having two parts (9 and 10)...
4528559 Seismic actuation system  
A seismic actuation system incorporating a plurality of motion sensors. The motion sensors included a housing in which a weight is supported for slidable movement along a single direction within...
4524287 Post-collision fire prevention device  
A safety device for interrupting the current to the electrical system of a motor vehicle comprises a special switch for opening the electrical circuit of a motor vehicle. This switch includes a...
4513629 Shock responsive device  
An actuator responsive to seismic or other shock forces includes a first swinging arm yieldingly urged pivotally in one direction and releasably retained against such swinging movement by shock...
4513183 Gravity switch  
A gravity switch comprises a dielectric and a cup-shaped conductor pressed together in telescoping relationship to provide a hermetically sealed enclosure for a brass ball contact member rollable...
4497118 Motion and orientation sensor  
A motion and orientation sensor and measuring device has an electric circuit contact actuated by a body of conductive fluid on disturbance of the conductive fluid by gravity, vibration or...
4496808 Electrical switch mechanism  
An electrical switch mechanism which operates in response to deceleration or acceleration for use on board trains for brake assurance purposes. High sensitivity to deceleration or acceleration...
4496809 Vibration sensitive trip switch for vehicle alarm system of the like  
A vibration sensitive trip switch for a vehicle alarm system or the like comprising a pair of juxtaposed generally coextensive cantilevered flat clock springs spaced one above the other. Each...
4470036 Safety light warning system for vehicles and the like  
An automobile signal system, having three modes of operation, stop, caution, and go. All three modes are energized by the automobile battery when the ignition switch is closed. The caution mode...
4467153 Shock and vibration sensitive switch  
A shock and vibration sensitive switch includes two E-shaped electrodes mounted on opposite sides of a cavity. Two inertia weights are supported by the electrodes in an electrical parallel...
4467154 Gravity switch and method of making same  
A molded cup-shaped dielectric member and a cup-shaped conductor member are pressed together to comprise an integral dimensionally stable sealed enclosure for a contact member movable axially...
4455461 Adjustable imbalance detector for a centrifuge  
An imbalance detector for a centrifuge includes a pendulum arm that is tuned to a critical frequency that lies within a predetermined range of the critical frequency of the rotor of the...
4433317 Controlled floating contactor switch  
A miniaturized switch particularly suitable for electronic keyboard control applications has a pair of contact members providing spaced contacts, a conductive floating contactor disposed in the...
4408196 Seismic alarm system  
A seismic alarm system incorporating a plurality of motion sensors. The motion sensors included a housing in which a weight is supported for slidable movement along a single direction within the...
4402138 Safety device  
A safety device for a power chain saw or the like. The safety device has a mass body which is responsive to acceleration forces and is operatively connected with a brake device. The mass body has...
4398175 Apparatus for automatically cancelling a turn signal  
An apparatus for automatically cancelling a turn signal, responsive to displacement of the center of gravity of a vehicle such as a motorcycle in moving into a turn. The apparatus includes means...
4390922 Vibration sensor and electrical power shut off device  
A vibration sensor and electrical power shut off device including a pendulum switch constructed for universal movement whereby vibration in any direction causes the pendulum switch to close and...
4384269 Vehicle acceleration/deceleration warning system having turn signal features  
An electronic acceleration/deceleration warning system for a vehicle includes an electro mechanical transducer, for example an arrangement of pendulum, light source and photocells, for converting...
4380692 Roller band sensor  
A roller band sensor includes a housing having a cavity including a pair of spaced generally parallel side walls joined by proximal and distal end walls. A pair of bands of flexible spring...
4378475 Velocity sensitive impact switch  
An impact switch sensitive to horizontally directed forces and to inversion of the switch is disclosed. The switch includes a U-shaped ball chase in which is mounted a movable actuating mass such...
4371763 Inerita switch device  
The inertia switch device (1) comprises an inertia mass (6) which is movable from a rest position when the device is subjected to an applied acceleration or deceleration in a horizontal plane, a...
4368637 Vibration sensing device  
A vibration sensing device comprising a vibration sensor forming part of an electrical circuit suspended by a pendulous support provided by a pair of electrically conductive suspension plates. The...
4362913 Collision detecting device  
A collision detecting device for automobiles or the like and adapted to produce, upon detection of a collision, an electric signal for actuating a safety device such as an air-bag. The collision...
4363022 Self cancelling motorcycle turn signal which recognizes balance  
An improved solid state self cancelling motorcycle turn signal system that recognizes when the turn has been completed. The circuit utilizes silicon controlled rectifiers for energizing the...
4361740 Seismic sensor apparatus  
A seismic sensor is disclosed which essentially consists of a central annular member having an inner conductive periphery. The annular member is coaxially positioned around a center post located...
4359717 Position-sensitive alarm system  
To increase the responsiveness of a vehicle alarm system to, for example, unauthorized entry through windows, jacking up for removal of parts or vehicle theft as well violent impact by another...
4358750 Vehicle alarm system having a vibration-sensitive motion detector  
In a vehicle alarm system there is provided apparatus for producing a digital control signal that defines a command to initiate a timing operation such as an entry delay. The apparatus comprises a...