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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 |
| 7242323 |
Electronic device having touch sensor |
Jul. 10, 2007 |
| 7205777 |
Capacitive proximity switch |
Apr. 17, 2007 |
| 7196553 |
Sensor signal detection device |
Mar. 27, 2007 |
| 7132768 |
Human body detecting device |
Nov. 7, 2006 |
| 7026844 |
Sensor signal detection device |
Apr. 11, 2006 |
| 6713897 |
Touch switch with integral control circuit |
Mar. 30, 2004 |
| 6160322 |
Pulse signal generation method and apparatus |
Dec. 12, 2000 |
| 5739598 |
Selfadjusting capacitive level switch for a non-contact or contact sensing of media or objects |
Apr. 14, 1998 |
| 5493691 |
Oscillator-shuttle-circuit (OSC) networks for conditioning energy in higher-order symmetry algebraic topological forms and RF phase conjugation |
Feb. 20, 1996 |
| 5367265 |
Moisture-sensing controller for a clothes dryer |
Nov. 22, 1994 |
| 4956612 |
Magnetic mine firing circuit |
Sep. 11, 1990 |
| 4939455 |
Sensor having two-wire connection to load |
Jul. 3, 1990 |
| 4922227 |
Touch-controlled switch and alarm system |
May. 1, 1990 |
| 4920281 |
Proximity switch circuit |
Apr. 24, 1990 |
| 4843259 |
Process for the non-contacting detection of eddy current-induced bodies, particularly metal objects, as well as to sensors based on the process |
Jun. 27, 1989 |
| 4820152 |
Single multi-function handpiece for dental instruments |
Apr. 11, 1989 |
| 4758735 |
DC touch control switch circuit |
Jul. 19, 1988 |
| 4757341 |
AC contactless switch |
Jul. 12, 1988 |
| 4682049 |
Pulse shaper for inductive transmitters |
Jul. 21, 1987 |
| 4663542 |
Electronic proximity sensor |
May. 5, 1987 |
| 4650314 |
Film inspection machine |
Mar. 17, 1987 |
| 4635691 |
Volume responsive liquid discharge nozzle |
Jan. 13, 1987 |
| 4633099 |
Feedback circuit for a semiconductor active element sensor |
Dec. 30, 1986 |
| 4609869 |
Magnetic sensor and circuit for detecting the edge of a target as it passes the centerline of the sensor |
Sep. 2, 1986 |
| 4551637 |
Electronic monitoring system with direct-current power supply |
Nov. 5, 1985 |
| 4543497 |
Electronic monitoring system with selective signal inversion |
Sep. 24, 1985 |
| 4527121 |
Short-circuit-protected evaluation circuit of high stability for variable inductance transducers |
Jul. 2, 1985 |
| 4470046 |
Capacitively coupled machine tool safety system having a digital quantizer |
Sep. 4, 1984 |
| 4468795 |
Counting method and apparatus |
Aug. 28, 1984 |
| 4433309 |
Proximity switch with built-in test circuit |
Feb. 21, 1984 |
| 4424458 |
Contactless proximity sensor with multilevel response |
Jan. 3, 1984 |
| 4420727 |
Self oscillating acoustic displacement detector |
Dec. 13, 1983 |
| 4420697 |
Process and apparatus for monitoring thread breakage by the use of a threshold device |
Dec. 13, 1983 |
| 4360737 |
Touch sensitive switch |
Nov. 23, 1982 |
| 4352141 |
Touch switch device |
Sep. 28, 1982 |
| 4345167 |
Capacitance proximity sensor |
Aug. 17, 1982 |
| 4336491 |
Electronic monitoring system stabilized against accidental triggering |
Jun. 22, 1982 |
| 4328433 |
Proximity switch |
May. 4, 1982 |
| 4323829 |
Capacitive sensor control system |
Apr. 6, 1982 |
| 4308443 |
Induction cook-top with improved touch control |
Dec. 29, 1981 |
| 4305007 |
Electronic two directional control apparatus |
Dec. 8, 1981 |
| 4295132 |
Capacitance intrusion detection system |
Oct. 13, 1981 |
| 4289980 |
Touch sensitive electric switch |
Sep. 15, 1981 |
| 4264831 |
Touch control switch |
Apr. 28, 1981 |
| 4258326 |
Capacitive detection of absent and/or double sheets in the sheet transport path of a printing machine |
Mar. 24, 1981 |
| 4237421 |
Single-electrode capacitance touchpad sensor systems |
Dec. 2, 1980 |
| 4231331 |
Pulse generator of the corona discharge type for sensing engine crankshaft angle on an engine control system |
Nov. 4, 1980 |
| 4225748 |
Switching device, especially for electronic contactless switches, e.g. proximity switches |
Sep. 30, 1980 |
| 4193023 |
Electronic monitoring system with low energy consumption in quiescent state |
Mar. 11, 1980 |
| 4191894 |
Proximity detector |
Mar. 4, 1980 |
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