Method of and apparatus for detecting presence of a mark on a tr

Details Method of and apparatus for detecting presence of a mark on a tr Method of and apparatus for detecting presence of a mark on a tr

1984-11-13

1987-05-12

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

377 8, 250223R, G08B 2100

Patent

active

046653929

ABSTRACT:
An apparatus for and method of detecting and signifying the presence or absence of a product identity mark or the like on a transparent sheet includes detecting facilities having a first part including light transmitting facilities and a second part including light detecting facilities, the first and the second parts mutually spaced apart from a predetermined portion of the sheet that should have the product identity mark applied thereto. If the mark is present at least a portion of light transmitted by the light transmitting facilities will be interrupted by the mark and prevented from reaching the light detecting facilities. Signalling facilities functionally connected to the light detecting facilities generate a "yes" signal when the light detected by the detecting facilities is above a predetermined level and a "no" signal otherwise.

REFERENCES:
patent: 2731621 (1956-01-01), Sontheimer
patent: 3478218 (1969-11-01), Wuellner et al.
patent: 3513320 (1970-05-01), Weldon
patent: 3609380 (1971-09-01), Shaw, Jr.
patent: 3737629 (1973-06-01), See
patent: 3906449 (1975-09-01), Marchak
patent: 4281243 (1981-07-01), Hudler
patent: 4513430 (1985-04-01), Vora et al.
patent: 4553846 (1986-11-01), Hilton et al.

Affiliated with

Also associated with

Rating

Method of and apparatus for detecting presence of a mark on a tr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of and apparatus for detecting presence of a mark on a tr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for detecting presence of a mark on a tr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1804864