Inventor
FAYFIELD ROBERT W
US21 patents
⚠️ This page may combine multiple inventors who share the name “FAYFIELD ROBERT W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BANNER ENG
17 patentsUS4598198AJul 1, 1986
Automatic power control for modulated LED photoelectric devices
BANNER ENG136 citations96
US6946643B1Sep 20, 2005
Retro-reflective photoelectric sensor
BANNER ENG22 citations92
US6285021B1Sep 4, 2001
Self checking safety switch
BANNER ENG29 citations92
US5777557AJul 7, 1998
Binary sensor with diagnostic signal superimposed on binary output
BANNER ENG30 citations92
US5644730AJul 1, 1997
Dual mode binary sensor for bus operation
BANNER ENG37 citations92
US5198664AMar 30, 1993
Photoelectric sensor assembly having compressible and sealing members
BANNER ENG27 citations92
US4965548AOct 23, 1990
Level indicator with alarm
BANNER ENG37 citations92
US4356393AOct 26, 1982
Alignment indicator for photoelectric scanners
BANNER ENG29 citations92
USD470462SFeb 18, 2003
Housing for photoelectric control
BANNER ENG15 citations84
USD471162SMar 4, 2003
Housing for photoelectric control
BANNER ENG8 citations74
USD442563SMay 22, 2001
Housing for photoelectric control
BANNER ENG14 citations74
US5254846AOct 19, 1993
Analog photosensor operating on the power from a standard 4-20 ma instrumentation current loop
BANNER ENG11 citations74
US5087838AFeb 11, 1992
Sourcing or sinking output circuit
BANNER ENG7 citations74
US4982107AJan 1, 1991
Sourcing or sinking output circuit
BANNER ENG8 citations74
US4626053ADec 2, 1986
Sensing devices with modular interconnection and programming
BANNER ENG17 citations74
US4217492AAug 12, 1980
Modular photoelectric switch
BANNER ENG11 citations74
US7492276B2Feb 17, 2009
Micro-processor controlled indicator device
BANNER ENG2 citations63