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5416293 |
Shock sensor including a compound housing and magnetically operated reed switch
A shock sensor has a housing with two portions. A first portion resiliently engages a reed switch which has staple formed leads. A second portion extends adjacent one of the reed switch leads and...
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5416456 |
Magnetic switch assemblies for home security systems
Apparatus for detecting the opened and closed state of a window as a component of a home security system comprising of a window having a peripheral frame defining an opening with a lower sill...
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5412361 |
Solderless flushmount security proximity switches and methods of constructing and utilizing same
A security proximity switch used in burglar alarms comprising a magnet portion and a signal generating portion. The signal generating portion comprises a reed switch having a device for quickly and...
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5391845 |
Inertia sensor
A sensor for automatically triggering safety devices in motor vehicles, the sensor has a housing having a housing recess with a base and a tilting body located in the housing recess, the tilting...
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5378865 |
Multi-directional shock sensor
A housing has a vertical subframe in which is mounted one or more reed switches. A magnet is mounted to a carriage which is mounted about the reed switch by a two-degree-of-freedom joint. The...
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5373125 |
Switch assembly
A tilt switch assembly (100) includes a hall-effect device (102) for determining if a magnet (110) which is placed within a housing (112) has tilted a predetermined amount causing the hall-effect...
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5373124 |
Acceleration switch
An acceleration switch has a housing having a housing recess, an elongated tilting body located in the housing recess and operating as a seismic mass, a magnetic system, and a reed switch. The...
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5326945 |
Shock sensor
To detect an impact due to a shock with high precision and stability, a shock sensor is employed which provides a sufficiently long closure interval of a contact of a reed switch (1) enough to...
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5325078 |
Gravity actuated magnetic switch
A switch assembly which is switchable between on and off positions in response to the tilting of the assembly. The switch assembly includes a magnet which is retained within a housing for...
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5311068 |
Solid-state energy meter with time-of-use rate scheduling and load control circuit
The present invention comprises, in one embodiment, a load control apparatus comprising a control unit for controlling the supply of power to a load. The control unit has a first state and a second...
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5293523 |
Unidirectional magnetic proximity detector
Assembly for unidirectional magnetic proximity detecting wherein a magnet is used in conjunction with a permeable plate for absorbing magnetic flux and a reed type switch. The switch contacts...
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5283593 |
Ink reservoir for ink printer means having a means to prevent unauthorized refilling
A replaceable ink reservoir for an ink printer [means comprises a means to] prevent unauthorized refilling and includes[. This means can be composed of] a magnetic contact element [(13)] arranged...
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5283402 |
Acceleration sensor with magnetic operated reed switch
A switch assembly has a magnet (26) mounted for in the vicinity of a reed switch (20). A weight (29) is movable in a direction generally perpendicular to the magnet (26), and is connected thereto...
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5266839 |
Adapter for asynchronous devices
A synchronizing circuit includes two switches for synchronizing the feeding of documents of a document feeder to the insert path of an insertion machine which is operative in accordance with a...
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5256839 |
Tilt switch responsive to acceleration or deceleration
An economical and accurate tilt switch, which incorporates a reed switch, a small disc shaped magnet, and an enclosed track in which the magnet is allowed to roll just enough to affect the contacts...
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5233323 |
Defeat resistant interlock/monitoring system
Four magnetically actuable reed switches are configured in a unique biasing configuration and physical arrangement for providing a defeat resistant interlock/monitoring system with minimal...
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5212357 |
Extended minimum dwell shock sensor
A shock sensor achieving the advantages of extended minimum dwell and extended total dwell employs a reed switch in a housing mounted coaxial to the reed switch. The shock sensor employs a magnet...
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5198789 |
Logic level electrical interlock device
A logic level interlock device for an electrical contactor having an armature carrying separable contacts is provided. The interlock includes a plunger which is movable with the armature as the...
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5194706 |
Shock sensor with a magnetically operated reed switch
A shock sensor has a housing defining an axially extending bore, a reed switch is centered within the bore by means of its axially extending leads and a transverse section of the housing which has...
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5179602 |
Magnetically operated fiber optic switch for controlling light transmission
A switching device which uses a pivotable switching element carrying a first magnet and a movable component carrying a second magnet mounted adjacent thereto, the north and south poles of the...
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5172089 |
Pool pump fail safe switch
A fluid detection device designed to detect the presence of fluids in a flowing or non-flowing state and having the ability to energize or de-energize large current devices such as a swimming pool...
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5159305 |
Magnet responsive variable differential switching apparatus
A variable differential switching apparatus comprising first structure for forming first and second magnetic fields presented sequentially along a travel path, the first field being stronger than...
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5155311 |
Float switch assembly for submersible pump
A magnetically actuated float switch assembly for use with a submersible pump, comprises a float rod with two spaced stops, a movable float carried by the rod which moves between the stops in...
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5155460 |
Switch housing with magnetic roller plunger
A plunger-operated switch assembly, useful for sensing the presence of a movable object such as a door or window, in which a magnetic reed contact is actuated by a magnet in the form of a disk-like...
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5138373 |
Copier or printer component position floating magnetic actuator
In a copier or printer a magnetic switch system is often used to indicate or signal the separation, mating, alignment or docking of components movable relative to one another, by the actuation or...
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5121109 |
Adjustable set point signalling gauge
An adjustable signalling gauge may utilize a non-captivating, magnetically actuated switch element which is mounted in an influence zone of the path of a magnet carried by an indicating pointer of...
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5086284 |
Connector having a switching device
A connector comprising a carrier body with at least two contact elements and a magnetically actuatable switching device. The switching device is arranged to electrically connect or disconnect the...
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5072164 |
Electric motor control unit
An electric motor control unit for use in a vending machine includes a sealed housing containing an electric motor drivingly connected through an eccentric and a cam follower to a magnetic switch...
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5042300 |
Liquid level sensor
A self-aligning oil level sensing switch is provided with an elongated float shaped to pass freely through a threaded aperture in the side of an engine crankcase as a switch housing is screwed into...
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5028750 |
Impact sensor
A magnetic impact sensor for motor vehicles with a safety system such as an airbag or belt tensioner for an occupant restraint system, has a circuit breaker arranged in an electrical trigger...
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5019795 |
Splice block for security system switch
A splice block for use with a condition responsive security switch is provided. The splice block is generally cylindrical and mounted to the end of the switch with terminals unitarily extending...
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5010216 |
Velocity change sensors
Various embodiments of sensors are disclosed which contain an inertial mass that is magnetically biased to an initial position. In response to a certain deceleration, the mass is caused to swing...
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4999599 |
Magnetic switch and latch for vehicle accessories
A magnetic switch assembly for an electrical circuit includes a switch housing with a cavity formed therein and at least one magnetically attractable electrical contact member exposed within the...
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4990898 |
Surface-mount intrusion detection switch housing
A housing for a surface-mount magnet and magnetically sensitive switch unit pair for use in an intrusion detection device. The switch and magnet units include a generally cylindrical housing member...
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4988965 |
Reed switch holder assembly
A reed switch holder assembly for detecting the passage of a magnet adjacent the assembly. The assembly includes a reed switch and first and second terminal elements each including a lead-receiving...
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4987276 |
Deceleration switch
A deceleration switch comprising a support member, a permanent magnet mounted on the support member and displaceable from a first position to a second position by inertia caused by a predetermined...
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4975687 |
Hall effect signalling gauge
A signalling gauge may utilize a non-captivating, magnetically actuated switch element which is mounted in an influence zone of a path of a magnet carried by an indicating pointer of the gauge. The...
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4965416 |
Acceleration and deceleration sensor
An acceleration and deceleration sensor includes a housing; first and second elongate cavities formed in the housing and extending parallel to one another; a reed switch disposed in the first...
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4959628 |
Rotating electric switch actuated by fixed magnetic means, usable for a surface cleaning device
A rotary electrical switch is provide for a portable power operated surface treating device having a fixed handle assembly, a hollow generally cylindrical roller supported for rotation on and...
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4933655 |
Mounting structure of a reed switch for an eddy-current indicator
Disclosed herein is a mounting structure of a reed switch in an eddy-current-type indicator which can realize to lessen an operation vibration sound of the reed switch. The mounting structure...
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4912406 |
Device for determining position of a railway vehicle by measuring deviation in position of a magnet
Apparatus including a magnet (10) having at least one degree of freedom w respect to a first member, tangent to the direction of measurement and cooperating with a magnetic portion associated with...
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4910634 |
Interlock switch
An interlock switch for the service door of a computer. The switch prevents power from being automatically resupplied to the computer if the door is opened while power has been interrupted, even if...
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4903010 |
Intrusion detection switch housing
A threadably installable intrusion detection unit. The unit has a generally cylindrical housing with an exterior threaded surface and an end portion formed to receive a screw driver. An operative...
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4898079 |
Electric or electronic position sensor device
The electric and/or electrical sensor or detector device is intended to cooperate with a movable element surrounded by a shell, it comprises an annular clamping collar adapted to be clamped in...
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4894499 |
Electric push-button switch
The electric push-button switch comprises a housing portion and a linearly moveable push-button portion. Guide columns at the housing portion and the push-button portion attain accurate linear...
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4888580 |
Child protector
A device is presented which warns parents that their children are being abducted by sounding an alarm. The alarm is wired to a battery and a magnetic switch comprised of two magnets. When the two...
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4877927 |
Extended dwell shock sensing device
An extended dwell shock sensing device (10) is constructed to operate in two stages. A carriage (34) that includes a magnet (40) is slidably mounted between a first abutment (20) and a second...
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4873401 |
Electromagnetic damped inertia sensor
A sensor comprising: an inertial mass movable from a first position to a second position in response to a acceleration (deceleration) signal of predetermined amplitude and duration; electrical...
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4866426 |
Magnetic amplifier housing and detector for an improved tamper alarm system
A magnetic amplifier housing uses a base, dowel and shunt to magnetizable terial to concentrate the magnetic field of a ring magnet through a Hall Effect transistor to provide an improved detector...
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4864087 |
Burglar alarm including a reed relay actuated in response to a vibrating magnet to produce an alarm signal
The present disclosure is directed to an improved burglar alarm which is mounted on a base having a concaved space for receiving therein a ring-like magnet with an elongated resilient arm,...
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