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5592079 Microelectronic position sensor for volume control  
A microelectronic position sensor having a stationary base portion including magnetic field sensitive elements and an adjustment means rotatably mounted within the adjustment means and including a...
5578977 Proximity switch with three switching positions  
A microswitch with an integrated circuit includes a ferromagnetic tripping body being movable between three switching positions. Two Hall sensors are associated with the tripping body. A permanent...
5576678 Apparatus and method for magnetic proximity switch alteration  
An apparatus and method is presented which allows a conventional two component surface mounted magnetic proximity switch, so attached to the window surface, to engage while the window is in either...
5565829 Side pivot seat  
A seat assembly and a power machine includes a seat having a front portion, a back portion, and first and second side portions. A base plate supports the seat, and a hinge is pivotably connected...
5554833 Magnetic switch tripping system  
For use primarily in sliding glass doors and windows for tripping a magnetic switch embedded in the casing as part of a security alarm circuit, a magnetic switch trip comprises an elongated...
5543767 Electrical switch  
An electrical switch functioning as a tilt, proximity or relay switch includes an elongate cylindrical housing with a first open end and a second closed end. A flexible spring extends...
5541562 Apparatus for sensing the closure of a door  
An enclosure sensing apparatus is provided which monitors the movement of a key structure relative to a housing structure. The purpose of the device is to determine that a moveable object has...
5530428 Security alarm switch  
A magnetic switch assembly (10) is provided for detecting relative movement between first and second adjacent members (14, 18), and to defeat attempted magnetic manipulation of the assembly (10)....
5523730 Switch with mangnetically-coupled armature  
A switch has a carrier sheet with electrodes formed on an internal side thereof to form switch contacts. An armature is held in slidable contact with the internal side of the carrier and the...
5483214 Armature position sensor for a relay  
A sensor for use with high-power solenoid-actuated relays, and for detecting and signalling relay armature position and hence the actuation state of the relay. The sensor is external to a sealed...
5458508 Method and apparatus for connecting an electrical component to a housing  
Terminals are formed on an electrically-conductive plate supporting a reed switch, and the terminals are extended through a resin holder. The holder is inserted into a connector housing and is...
5450049 Switch for signaling changes in position and accelerations  
A switch signals changes in position and accelerations of its housing. The switch housing includes a movably mounted permanent magnet and at least one reed switch. The permanent magnet is...
5440084 Shock detecting system  
A shock sensor including a switch turned on by magnetic force. The switch includes a reed switch, a magnet sliding back and forth along a case for the reed switch, and a coil spring biasing the...
5422616 Electric switch  
An electric switch 11 has contacts 12 and 13 which are initially closed by activating means 14. The invention provides urging means 22 to bias the switch against reopening of the contacts during...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...