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Class Information
Number: 250/222.1
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Controlled by article, person, or animal > Inanimate article
Description: Subject matter in which the object is an inanimate article.

Sub-classes under this class:

Class Number Class Name Patents
250/224 Article and light ray relatively moved during sensing 115
250/223R Conveyor or chute 532
250/222.2 Particle detection 189

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8712485 Proximity sensor arrangement in a mobile device Apr. 29, 2014
RE44786 System and method for monitoring handling of a firearm or other trigger-based device Mar. 4, 2014
8648292 Safety photoelectric switch Feb. 11, 2014
8618465 Seed sensor system and method for improved seed count and seed spacing Dec. 31, 2013
8614414 Proximity sensor Dec. 24, 2013
8584345 Reprocessing of a physiological sensor Nov. 19, 2013
8575538 Safety system for safeguarding a moving, guided motion element that blocks the movement of the guided motion element from triggering the saftey mode Nov. 5, 2013
8575582 Method for the optical monitoring of a monitored zone and light sensor Nov. 5, 2013
8546740 Evaluation of a difference signal between output signals of two receiving devices in a sensor apparatus Oct. 1, 2013
8499967 Methods and apparatus for dispensing solid articles Aug. 6, 2013
8497466 Apparatus for checking mechanical component parts with optical devices, and relevant protection device and method Jul. 30, 2013
8476834 Automatic lighting control system Jul. 2, 2013
8471704 Door system comprising a sensor device for monitoring vertical door edges Jun. 25, 2013
8436291 Automated pill dispensing systems for detecting characteristics of bottles in output chutes using modulated light sources and related methods of operation May. 7, 2013
8428686 Extended optical range system for monitoring motion of a member Apr. 23, 2013
8415609 Safety photoelectric switch Apr. 9, 2013
8397475 Packaging machine with gas concentration measuring device Mar. 19, 2013
8309904 Safety system for safeguarding a moving, guided motion element having switchable object detection devices Nov. 13, 2012
8248235 Area monitoring sensor Aug. 21, 2012
8244401 Methods and apparatus for dispensing solid articles Aug. 14, 2012
8218154 System and a method of determining a position of a scattering/reflecting element on the surface of a radiation transmissive element Jul. 10, 2012
8145291 Extended optical range reflective system for monitoring motion of a member Mar. 27, 2012
8119964 Safety device for a press brake type of machine Feb. 21, 2012
8115914 Multi-optical axis photoelectronic sensor Feb. 14, 2012
8110789 Electronic device and method for recording disassembly times thereof Feb. 7, 2012
8110790 Large depth of field line scan camera Feb. 7, 2012
8106349 Vision alignment with multiple cameras and common coordinate at contactor for IC device testing handlers Jan. 31, 2012
8035078 Distributed display composed of active fiducials Oct. 11, 2011
8029661 Method for on-line monitoring of wax crystallization Oct. 4, 2011
8026472 Touch-sensitive momentary contact switch with an evaluation circuit detecting a malfunction in an optical sensor Sep. 27, 2011
8026473 Tilt sensor Sep. 27, 2011
8013287 Optical pointing device, optical pointing system, and method of operating the same Sep. 6, 2011
8003931 Optical vend-sensing system for control of vending machine Aug. 23, 2011
7973273 Light barrier with feedback control Jul. 5, 2011
7960681 Scanning method and system for a multiple light beam system Jun. 14, 2011
7949427 Methods and apparatus for dispensing solid articles May. 24, 2011
7907267 Optical method and system for generating calibration data for use in calibrating a part inspection system Mar. 15, 2011
7897911 Optoelectronic sensor arrangement and process for monitoring a surveillance area Mar. 1, 2011
7893410 Method and apparatus for processing multiphoton curable photoreactive compositions Feb. 22, 2011
7880130 Optical device and mobile apparatus Feb. 1, 2011
7863551 System, method and medium tracking motion of subject using laser Jan. 4, 2011
7857467 Projectors with security area detection Dec. 28, 2010
7842912 Camera based vision alignment with device group guiding for semiconductor device testing handlers Nov. 30, 2010
7829838 Mobile high bay storage system having vehicle guidance system Nov. 9, 2010
7796278 Method for precisely measuring position of a part to be inspected at a part inspection station Sep. 14, 2010
7791013 Biological microarray line scanning method and system Sep. 7, 2010
7784317 Safety system for a bending press and a slatted tool Aug. 31, 2010
7772540 RF controlled sequential lighting system Aug. 10, 2010
7738088 Optical method and system for generating calibration data for use in calibrating a part inspection system Jun. 15, 2010
7725152 Extended optical range system for monitoring motion of a member May. 25, 2010

1 2 3 4 5 6 7 8 9 10 11

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