Patents
Patents for H01H 36 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding (3,817)
06/1983
06/21/1983US4389635 Interfacing attachment for remote mechanical fire alarms
06/21/1983US4389627 Changeover switch for actuating a plurality of reed switches disposed in a circle
05/1983
05/24/1983CA1146997A1 Magnetic actuating movement for contact-dependent and contactless switching
05/17/1983US4384184 Explosion-proof device for measuring liquid levels
04/1983
04/19/1983US4380704 Electrical switch
04/12/1983US4380040 Capacitive systems for touch control switching
03/1983
03/31/1983WO1983001150A1 Transparent planar switch structure and switch unit
03/30/1983EP0075112A2 Switching apparatus, in particular an electronic switching apparatus operating without contact, with a cylindrical casing
03/29/1983US4378541 Time delay switch
03/03/1983WO1983000780A1 Touch-operated power control device
02/1983
02/01/1983US4371118 Magnetic safety interlock method and apparatus for food processor
01/1983
01/05/1983EP0068280A2 Magnetically operated electrical contact arrangement
01/04/1983US4367385 Capacitance switch
12/1982
12/22/1982EP0067366A2 Electric, particularly electronic, switching apparatus operated without contacting
12/21/1982US4365196 Proximity sensing transducer with simulation means
12/21/1982US4365125 Flow actuating switching device
12/14/1982US4364019 Multipart actuating mechanism
11/1982
11/16/1982US4359720 Environmentally sealed variable capacitance apparatus
11/16/1982US4359704 Device for setting up contact connections between independent electrical circuits
11/10/1982EP0064240A2 Capacitive circuit board and method for fabricating it
11/02/1982US4356755 Organ stop control panel
11/02/1982US4356729 Fluid level detector
10/1982
10/05/1982US4353049 Magnetically detented rotary switch
09/1982
09/14/1982US4349800 Magnetic proximity switch
08/1982
08/24/1982US4346360 Low profile reed keyswitch
08/17/1982CA1129976A1 Rotary shaft position switch
06/1982
06/22/1982US4336519 Magnetic electrical contact systems
06/22/1982US4336518 Plunger operated magnetic contact switch assembly
06/15/1982US4335285 Float operated electrical switch assembly
06/08/1982US4334204 Proximity switch assembly
06/02/1982EP0052680A1 Float switch
06/01/1982CA1124779A1 Magnetic actuator using modulated flux
05/1982
05/27/1982WO1982001786A1 Float-controlled electrical switch device comprising a reed contact which is opened and closed by the field of force of a permanent magnet
05/25/1982US4331945 Magnetically actuatable tamper switch assembly
05/25/1982US4331013 Anti-theft device
05/19/1982EP0051961A1 Apparatus for monitoring a valve
05/11/1982US4329550 Delayed action liquid level sensing apparatus
05/04/1982US4328402 Sensing switch for detecting a document
04/1982
04/21/1982EP0050063A1 Release mechanism with permanent magnet
04/21/1982EP0049795A2 Electronic switching device operated without contact
03/1982
03/30/1982US4322703 Electrical switch and actuator therefor having both linear and angular adjustment therebetween
03/23/1982US4321590 Check mechanism for fluid level warning device in fluid reservoirs
02/1982
02/16/1982US4316145 Fluid pressure actuator with proximity position sensor
02/09/1982CA1117785A1 Float operated switch assembly
02/02/1982US4314310 Electrical switch
01/1982
01/12/1982US4310188 Magnetic switch for attractive latch
01/05/1982US4309628 Pulse generation by changing magnetic field
12/1981
12/15/1981US4305285 Liquid level detecting and warning device
12/01/1981US4303856 Control push-button device for switching an electronic or electric circuit
10/1981
10/28/1981EP0038434A1 Multiple use selector stage
10/27/1981US4297543 Safety device for container filler systems
10/15/1981WO1981002946A1 Distributor stage for the definition of control programs
10/13/1981CA1110728A1 Solid state proximity switch
10/06/1981US4293745 Capacitance type contact switch
09/1981
09/29/1981US4291761 Magnetic sensing device
09/16/1981EP0035740A1 Capacitive sensor for a time-piece and method of manufacturing this sensor
09/08/1981US4288767 Automatic magnetic switch
09/02/1981EP0034821A1 Pulse generation by changing magnetic field
09/01/1981US4287440 Proximity switching device
09/01/1981CA1108265A1 Safety switch assemblies
08/1981
08/25/1981CA1107840A1 Bounce dampening system for switch actuators
08/18/1981US4284904 Encapsulated magnetically sensitive circuit elements for depth-indicating purposes or the like
08/18/1981CA1107326A1 Automatic magnetic switch
08/18/1981CA1107325A1 Air-gap adjusting means for a magnetic proximity switch
08/11/1981US4283031 System controlling apparatus which compares signals from sensors monitoring passing objects with pre-determined parameter information to control the system
07/1981
07/22/1981EP0032302A2 Organ stop control apparatus
07/14/1981US4278858 Liquid level responsive proximity switch
07/14/1981CA1105113A1 Keyboard actuatable with the aid of the fingers of at least one hand
06/1981
06/16/1981US4274070 Proximity instant-on switch for medical and dental instruments
05/1981
05/26/1981US4270033 Brake-fluid level detector
05/26/1981US4268953 Method of making an encapsulated magnetic-reed switch circuit element adapted for use in interconnected array
04/1981
04/28/1981US4264903 Capacitive touch control and display
04/28/1981US4264225 Bounce dampening system for switch actuators
04/07/1981CA1098990A1 Shielding arrangement for a capacitive touch switch device
03/1981
03/24/1981US4258346 Magnetically actuated digital switch
03/24/1981US4258238 Liquid level signal transmitter
02/1981
02/10/1981US4250495 Touch sensitive control panel and a method of manufacture thereof
01/1981
01/27/1981US4247804 Cold cathode discharge device with grid control
12/1980
12/30/1980US4242658 Magnetic actuator using modulated flux
12/02/1980US4237386 Plug-in module for touch control switching
11/1980
11/11/1980CA1089516A1 Magnetically actuated proximity sensing device
09/1980
09/30/1980US4225837 Armature for a proximity switch
09/30/1980US4225748 Switching device, especially for electronic contactless switches, e.g. proximity switches
09/30/1980CA1086877A1 Bar graph type touch switch and display device
09/23/1980CA1086402A1 Vertical float switch
09/17/1980EP0015663A1 Float operated electrical switch assembly
09/17/1980EP0015497A1 Electrical switch, the actuating side of which can assume several positions
08/1980
08/06/1980EP0014194A1 Electric switch
08/05/1980CA1083245A1 Reed switch assembly for a position indicating system
08/05/1980CA1083206A1 Magnetically operated switch with cantilever mounted coil spring contact arm
07/1980
07/22/1980US4214133 Rotary shaft position switch
07/15/1980US4213110 Proximity switch having adjustable sensitivity
07/09/1980EP0012812A1 Magnetic modulated-flux actuator
07/08/1980US4211991 Magnet-controlled switch
07/08/1980US4211990 Electric switch concealing hinge
07/01/1980US4210889 Magnetically actuated sensing device
07/01/1980US4210888 Magnetically operated proximity switch
06/1980
06/17/1980CA1079832A1 Liquid-level float switch construction
05/1980
05/27/1980US4205242 Electret bistable system
05/27/1980CA1078434A1 Cartridge for magnetically operated contacts
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