Optics: image projectors – Picture carrier
Patent
1993-03-26
1994-12-06
Cuchlinski, Jr., William A.
Optics: image projectors
Picture carrier
353DIG5, 401592, G03B 2111
Patent
active
053715608
ABSTRACT:
An improved envelope for transparencies for overhead projectors comprising a substantially rectangular pocket made of a transparent sheet material, the pocket having two longitudinal side edges connected by shorter side edges, and being open at least along one side edge for insertion of a transparency, at least one opaque flap attached in a foldable manner along one of the side edges by means of a flexible adhesive tape, the tape comprising a flexible polyester backing having a thickness of from about 5 to about 15 micrometers, and coated on one surface of the backing is an adhesive layer, wherein the tape has a flexibility measurement of about 1.8 grams, and the flap is capable of remaining in the unfolded position on an overhead projector stage with minimal adhesive transfer at the operating temperature of the overhead projector.
REFERENCES:
patent: Re24906 (1960-12-01), Ulrich
patent: 3253358 (1966-05-01), Wright
patent: 3264936 (1966-08-01), Schultz et al.
patent: 3438702 (1969-04-01), Milhaupt et al.
patent: 3438703 (1969-04-01), Winnemann
patent: 3524703 (1970-08-01), Wright
patent: 3536393 (1970-10-01), Kitch
patent: 3537792 (1970-11-01), Furniss et al.
patent: 3544211 (1970-12-01), Albee
patent: 3600079 (1971-08-01), Smith et al.
patent: 3875693 (1975-04-01), Pekley
patent: 3895453 (1975-07-01), Wright
patent: 4181752 (1980-01-01), Martens et al.
patent: 4304705 (1981-12-01), Heilmann et al.
patent: 4329384 (1982-05-01), Vesley et al.
patent: 4330590 (1982-05-01), Vesley
patent: 4379201 (1983-04-01), Heilmann et al.
patent: 4402585 (1983-09-01), Gardlund
patent: 4548487 (1985-10-01), Nielsen
patent: 4679923 (1987-07-01), Nielson
patent: 4810544 (1989-03-01), Hickman
patent: 5237355 (1993-08-01), Kiehne et al.
Kiehne Douglas A.
Luthy Kenneth W.
Quan Nancy N.
Cuchlinski Jr. William A.
Dowling William C.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
LandOfFree
Envelope for transparency does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Envelope for transparency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Envelope for transparency will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-217878