Measuring device and method for detecting objects...

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Reexamination Certificate

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Details

C250S559400, C250S559120, C408S006000, C408S016000, C356S625000

Reexamination Certificate

active

10902307

ABSTRACT:
The invention relates to a measuring device5of the type which detects the interruption of a beam of radiation (e.g. light20) by an object (50FIG. 1) in the beam. The device includes a light emitter12and a light detector32each enclosed in a housing10and30. In order to accommodate different spacings between the housings different caps14having varying size apertures11are fittable to the housings. This allows varying amounts of light to be issued and/or detected. Other ways of adjusting the amount of light passing through the cap are disclosed.

REFERENCES:
patent: 3498721 (1970-03-01), Thorndike
patent: 3799680 (1974-03-01), Weisner
patent: 4502823 (1985-03-01), Wronski et al.
patent: 4672201 (1987-06-01), Welker
patent: 4676648 (1987-06-01), Schulz et al.
patent: 5138150 (1992-08-01), Duncan
patent: 5331143 (1994-07-01), Marom et al.
patent: 6496273 (2002-12-01), Stimpson et al.
patent: 6648476 (2003-11-01), Watanabe et al.
patent: 1410830 (2003-04-01), None
patent: 1 050 368 (2000-08-01), None
patent: 1 050 368 (2000-11-01), None
patent: 2 787 589 (2000-06-01), None

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