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Class Information
Number: 361/179
Name: Electricity: electrical systems and devices > Control circuits for electromagnetic devices > For relays or solenoids > Condition responsive (e.g., external circuit condition) > Proximity or contact
Description: Subject matter wherein the device or circuit which initiates the operation of the relay or solenoid is responsive to an object coming very close to or touching the device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7365955 |
Material processing machine |
Apr. 29, 2008 |
| 7327335 |
Display device and an electronic apparatus using the same |
Feb. 5, 2008 |
| 7218498 |
Touch switch with integral control circuit |
May. 15, 2007 |
| 7202796 |
Device and method for triggering a sensor for cables |
Apr. 10, 2007 |
| 7193833 |
Electric switch |
Mar. 20, 2007 |
| 7177132 |
Method and apparatus for determining a switching signal state |
Feb. 13, 2007 |
| 7082023 |
Method and circuit arrangement for function monitoring of an electronic-mechanical position switch |
Jul. 25, 2006 |
| 7076381 |
Adaptive proximity sensing |
Jul. 11, 2006 |
| 6900728 |
System to detect user entry into a defined danger zone |
May. 31, 2005 |
| 6885365 |
Glass touch sensing circuit |
Apr. 26, 2005 |
| 6853531 |
Material processing machine |
Feb. 8, 2005 |
| 6744391 |
System for sampling a signal in an electronic instrument using a unipolar A/D converter |
Jun. 1, 2004 |
| 6717514 |
Alarm system and method |
Apr. 6, 2004 |
| 6683778 |
Device for use in electric vehicles for detecting adhesion in relay due to melting |
Jan. 27, 2004 |
| 6664661 |
Proximity switch |
Dec. 16, 2003 |
| 6647133 |
Fingerprint identification device-equip with a touch sensor for detecting a human finger |
Nov. 11, 2003 |
| 6452501 |
Automatic shut-off and indication device for an electric heating appliance and electric pressing iron comprising such a device |
Sep. 17, 2002 |
| 6442013 |
Apparatus having capacitive sensor |
Aug. 27, 2002 |
| 6418004 |
Safety system utilizing a passive sensor to detect the presence of a hand of a worker and provide a signal to interrupt the operation of a machine |
Jul. 9, 2002 |
| 6411288 |
Fold-down flat panel display device |
Jun. 25, 2002 |
| 6366442 |
Vehicular input device including single manual operating unit for operating various electronic devices mounted on vehicle |
Apr. 2, 2002 |
| 6335855 |
Battery powered programmable remote switch controller |
Jan. 1, 2002 |
| 6281803 |
Control mat monitoring and warning apparatus and method |
Aug. 28, 2001 |
| 6274829 |
Wireless inductive coupled switch |
Aug. 14, 2001 |
| 6212052 |
Contactless safety switch |
Apr. 3, 2001 |
| 6176207 |
Electronically controlling the landing of an armature in an electromechanical actuator |
Jan. 23, 2001 |
| 6160322 |
Pulse signal generation method and apparatus |
Dec. 12, 2000 |
| 6130489 |
Inductive proximity switch |
Oct. 10, 2000 |
| 6115229 |
Apparatus for identifying the position of an element, in particular a lock bolt of a motor vehicle lock, which can be moved between two end positions, and a method of driving the apparatus |
Sep. 5, 2000 |
| 6104100 |
Charge transfer load sensor |
Aug. 15, 2000 |
| 6060796 |
Protective circuit |
May. 9, 2000 |
| 6029578 |
Method and device for starting a machine |
Feb. 29, 2000 |
| 5991142 |
Detection of ophthalmic surgical handpiece by injecting current signal |
Nov. 23, 1999 |
| 5984513 |
Very low current microcontroller operated motion sensor |
Nov. 16, 1999 |
| 5923101 |
Non-contact key |
Jul. 13, 1999 |
| 5844204 |
Device for detection of electric current by micro-leakage |
Dec. 1, 1998 |
| 5818681 |
Electromagnetic relay drive circuit |
Oct. 6, 1998 |
| 5818129 |
Non-contact proximity switch and method for programming it |
Oct. 6, 1998 |
| 5812356 |
Computer docking system having an electromagnetic lock |
Sep. 22, 1998 |
| 5796341 |
Safety and security system for work area |
Aug. 18, 1998 |
| 5716129 |
Proximity switch for lighting devices |
Feb. 10, 1998 |
| 5666010 |
Safety system for machine tools |
Sep. 9, 1997 |
| 5554973 |
Electrostatic capacitance-type sensor |
Sep. 10, 1996 |
| 5528450 |
Electronic belt with deactivating device |
Jun. 18, 1996 |
| 5523684 |
Electronic solenoid control apparatus and method with hall effect technology |
Jun. 4, 1996 |
| 5500783 |
Circuit and method for controlling fastener application |
Mar. 19, 1996 |
| 5487013 |
System and method for reading operating parameters into an operationally ready proximity switch |
Jan. 23, 1996 |
| 5451935 |
Electronic arrangement for the initiation of an action by means of a key element |
Sep. 19, 1995 |
| 5442671 |
Circuit and method of detecting actuator movement |
Aug. 15, 1995 |
| 5436789 |
Signal-change surveillance equipment, in particular for use in self-checking control systems |
Jul. 25, 1995 |
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