Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Reexamination Certificate
2006-05-30
2006-05-30
Sohn, Seung C. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
C250S2140DC
Reexamination Certificate
active
07053392
ABSTRACT:
The present invention teaches a method and apparatus for making measurement of an object on a machine, such as a machine tool, using an optical measuring apparatus which includes a light source for generating a beam of light which is incident on a detector. A detection signal is generated within the detector each time the beam is interrupted. The duration and/or frequency of the detection signals are evaluated and an output signal is emitted from the detection only if a further detection signal is present within the detector in a specified time interval from the generation of an earlier detection signal.
REFERENCES:
patent: 3772523 (1973-11-01), Montanvert et al.
patent: 4502823 (1985-03-01), Wronski et al.
patent: 4518257 (1985-05-01), Donaldson
patent: 5004930 (1991-04-01), Gremaud et al.
patent: 5293048 (1994-03-01), Skunes et al.
patent: 5433649 (1995-07-01), Nishida
patent: 5786602 (1998-07-01), Pryor et al.
patent: 5841662 (1998-11-01), Cook et al.
patent: 5940787 (1999-08-01), Gelston
patent: 6111262 (2000-08-01), Takanashi
patent: 2002/0118372 (2002-08-01), Bucher et al.
patent: 3905949 (1990-08-01), None
patent: 4238504 (1994-05-01), None
patent: 4244869 (1994-05-01), None
patent: 4323910 (1995-01-01), None
patent: 4244869 (1997-08-01), None
patent: 0 098 930 (1984-01-01), None
patent: 0 511 117 (1992-10-01), None
patent: 0584510 (1994-03-01), None
patent: 1 050 368 (2000-11-01), None
patent: 2343555 (1977-10-01), None
Bell Colin T.
Davies William K.
Fuge Jon P.
Leete Norman J.
Stimpson Victor G.
Oliff & Berridg,e PLC
Renishaw PLC
Sohn Seung C.
LandOfFree
Optical measuring apparatus for measuring objects on machines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical measuring apparatus for measuring objects on machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical measuring apparatus for measuring objects on machines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3595513