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Class Information
Number: 341/33
Name: Coded data generation or conversion > Bodily actuated code generator > Including keyboard or keypad > Capacitive actuation
Description: Subject matter in which the operation of a control element is sensed by a capacitive sensor.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
4175239 Detection means for touch control switches Nov. 20, 1979
4170916 Touch operated capacitive switch for electronic musical instruments Oct. 16, 1979
4157539 Charge rate, capacitive switch system Jun. 5, 1979
4145748 Self-optimizing touch pad sensor circuit Mar. 20, 1979
4132487 Keyboard switch Jan. 2, 1979
4129747 Human-machine interface apparatus Dec. 12, 1978
4110749 Touch display to digital encoding system Aug. 29, 1978
4110748 Keyswitch with hysteresis Aug. 29, 1978
4103252 Capacitive touch-activated transducer system including a plurality of oscillators Jul. 25, 1978
4083100 Method of manufacturing a keyboard assembly Apr. 11, 1978
4056699 Touch plate assembly Nov. 1, 1977
4055755 Switching assembly in combination wristwatch and calculator Oct. 25, 1977
4047241 Capacitive switch Sep. 6, 1977
4037225 Keyboard encoding system with electronic hysteresis Jul. 19, 1977
4034234 Switching module for solid-state keyboard Jul. 5, 1977
4027569 Keyboard for an electronic musical instrument employing variable capacitors Jun. 7, 1977
4023343 Electronic clock with capacitative resetting May. 17, 1977
4016490 Capacitative proximity sensing system Apr. 5, 1977
4001536 Microwave oven controls Jan. 4, 1977
3974472 Domestic appliance control and display panel Aug. 10, 1976
3973255 Touch responsive keyboard apparatus Aug. 3, 1976
3971013 Touch keyboard Jul. 20, 1976
3968488 Electronic keyboard Jul. 6, 1976
3958239 Capacitive transistorized signaling device May. 18, 1976
3947696 Touch actuated electronic switch Mar. 30, 1976
3947390 Arch shaped snap-type switch contact Mar. 30, 1976
3943812 Touch responsive sensor in electronic keyboard musical instrument Mar. 16, 1976
3931610 Capacitive keyswitch sensor and method Jan. 6, 1976

1 2 3 4 5 6 7










 
 
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