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Class Information
Number: 307/652
Name: Electrical transmission or interconnection systems > With nonswitching means responsive to external nonelectrical condition > Responsive to approach or passage of an object
Description: Subject matter wherein controlling or detecting means comprises means that react to the proximity of something that is capable of being sensed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4168443 |
Two-wire proximity detector |
Sep. 18, 1979 |
| 4159473 |
Charge sensitive switch |
Jun. 26, 1979 |
| 4138709 |
Proximity switch |
Feb. 6, 1979 |
| 4135124 |
Electronic monitoring system with selective signal inverter |
Jan. 16, 1979 |
| 4119864 |
Touch switch circuits |
Oct. 10, 1978 |
| 4112379 |
Jam detector |
Sep. 5, 1978 |
| 4107555 |
Proximity switch and circuit system |
Aug. 15, 1978 |
| 4105902 |
Touch sensitive input for electronic wristwatch and/or electronic calculator |
Aug. 8, 1978 |
| 4101805 |
Touch-responsive socket |
Jul. 18, 1978 |
| 4099118 |
Electronic wall stud sensor |
Jul. 4, 1978 |
| 4097769 |
Circuit for controllably providing power from an AC source to a load |
Jun. 27, 1978 |
| 4090091 |
Housing and control circuit assembly with sensing element |
May. 16, 1978 |
| 4081700 |
Touch control switch circuit with compensation for power supply line fluctuations |
Mar. 28, 1978 |
| 4079322 |
Automatic vehicle monitoring system |
Mar. 14, 1978 |
| 4079323 |
Method and apparatus for coupling a moving-object sensor to direction-sensitive data utilization apparatus |
Mar. 14, 1978 |
| 4066968 |
Method and apparatus for providing a periodic control signal, especially for controlling the ignition of an internal combustion engine |
Jan. 3, 1978 |
| 4053849 |
Oscillation means for generating a differential AC signal proportional to movement of a conducting member |
Oct. 11, 1977 |
| 4053789 |
Touch actuated system responsive to a combination of resistance and capacitance |
Oct. 11, 1977 |
| 4033305 |
Electronic ignition systems for an internal combustion engine |
Jul. 5, 1977 |
| 4031408 |
Proximity switching system |
Jun. 21, 1977 |
| 4030037 |
Proximity detecting apparatus |
Jun. 14, 1977 |
| 4023052 |
Touch control arrangement |
May. 10, 1977 |
| 4016428 |
Power switching circuit |
Apr. 5, 1977 |
| 4016453 |
Proximity pad with controlled illumination |
Apr. 5, 1977 |
| 4007425 |
Temperature sensor using pulse width modulator for duty cycle control |
Feb. 8, 1977 |
| 4004234 |
Article presence sensor |
Jan. 18, 1977 |
| 4001613 |
Proximity sensing circuit |
Jan. 4, 1977 |
| 3973208 |
Capacitor detector device |
Aug. 3, 1976 |
| 3965373 |
Automatic reference level adjustment circuit |
Jun. 22, 1976 |
| 3947696 |
Touch actuated electronic switch |
Mar. 30, 1976 |
| 3944933 |
Jam detection circuit |
Mar. 16, 1976 |
| 3944843 |
Impedance responsive touch actuated circuit |
Mar. 16, 1976 |
| 3936755 |
Proximity switch circuit |
Feb. 3, 1976 |
| 3935537 |
Apparatus for measuring angular movement |
Jan. 27, 1976 |
| 3935542 |
Contactless oscillator-type proximity sensor with constant-voltage impedance |
Jan. 27, 1976 |
| 3932803 |
Electronic monitoring system including contactless motion detector |
Jan. 13, 1976 |
| 3932774 |
Electronic monitoring system with short-circuit protection |
Jan. 13, 1976 |
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