Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-01-23
2007-01-23
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S231140, C341S013000, C341S014000
Reexamination Certificate
active
10959041
ABSTRACT:
A system and method for determining the absolute position of a linear or rotary actuator. A code plate having a series of digital words thereon is associated with the linear or rotary actuator. Each of the digital words consists of a plurality of bits, each bit consisting of a series of parallel encoder elements, each in the shape of a wedge. One or two optical sensor heads would be used in conjunction with a signal processor to determine the exact position of the code plate, and, in turn, the linear or rotary actuator. The exact position of each of the sensor heads with respect to the code plate is determined based upon the value of optical signals reflected off of the wedge-shaped elements and detected by each of the optical sensors.
REFERENCES:
patent: 3982106 (1976-09-01), Stutz
patent: 4602242 (1986-07-01), Kimura
patent: 4633224 (1986-12-01), Gipp et al.
patent: 4641027 (1987-02-01), Renner et al.
patent: 4733069 (1988-03-01), Narutaki
patent: 5068529 (1991-11-01), Ohno et al.
patent: 5336884 (1994-08-01), Khoshnevisan et al.
patent: 5422479 (1995-06-01), Sahori
patent: 5451776 (1995-09-01), Kolloff et al.
patent: 5665974 (1997-09-01), Truong
patent: 5748111 (1998-05-01), Bates
patent: 5825023 (1998-10-01), Cai et al.
patent: 5965879 (1999-10-01), Leviton
patent: 6512589 (2003-01-01), Rodi
patent: 6545262 (2003-04-01), Burgschat
patent: 6562169 (2003-05-01), Holzapfel et al.
patent: 6666375 (2003-12-01), Harriman et al.
patent: 2003/0047674 (2003-03-01), Thornburn et al.
patent: 2003/0062470 (2003-04-01), Burgschat et al.
Epps Georgia
Hoffman Wasson & Gitler, P.C.
Optelecom-NKF
Williams Don
LandOfFree
Fiber optic remote reading encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fiber optic remote reading encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber optic remote reading encoder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3803904