Self-advancing film cassette having separation claw for jamming

Details Self-advancing film cassette having separation claw for jamming Self-advancing film cassette having separation claw for jamming

1992-04-17

1993-05-25

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

354275, G03B 1726

Patent

active

052132773

ABSTRACT:
A self-advancing film cassette has at least one separation claw for separating a film leader from a roll of film. This separation claw is disposed within a cassette shell so that it will contact an outermost peripheral surface of a photographic film on the outer side of an area where a picture frame is to be formed. The separation claw is so configured that the contact position between the tip thereof and an end face of a film leader end is 1/3 or more of the film thickness when measured from the outer surface of the photographic film. The film leader projects most at a portion corresponding to the separation claw, and the film leader is formed to be narrow so that it will not be stuck to the film roll. In one embodiment, the film leader is subjected to deformation treatment to form a corrugated leading portion, or to rigidity increasing treatment to form a more rigid leading portion.

REFERENCES:
patent: 1519536 (1924-12-01), Furry
patent: 2176507 (1939-10-01), Nagel
patent: 2336278 (1943-12-01), Mihalyi
patent: 2360255 (1944-10-01), Mihalyi
patent: 2364381 (1944-12-01), Mihalyi
patent: 2521932 (1950-09-01), Mihalyi
patent: 2521935 (1950-09-01), Monroe
patent: 2552200 (1951-05-01), Mihalyi
patent: 3323744 (1967-06-01), Chesley et al.
patent: 3467340 (1969-09-01), Rosenburgh
patent: 3556435 (1971-01-01), Wangerin
patent: 3627229 (1971-12-01), Wangerin
patent: 3627230 (1971-12-01), Wangerin
patent: 3677499 (1972-07-01), Wangerin
patent: 3771687 (1973-11-01), Krtous
patent: 3797777 (1974-03-01), Hosono et al.
patent: 4138068 (1979-02-01), Kinoshita
patent: 4407579 (1983-10-01), Huff
patent: 4455076 (1984-06-01), Birkeland
patent: 4832275 (1989-05-01), Robertson
patent: 4834306 (1989-05-01), Robertson et al.
patent: 4846418 (1989-07-01), Fairman
patent: 4887776 (1989-12-01), Niedospial, Jr. et al.
patent: 4948063 (1990-08-01), Niedospial, Jr.
patent: 4962401 (1990-10-01), Takahashi
patent: 5003334 (1991-03-01), Pagano et al.
Patent Abstracts of Japan, vol. 6, No. 203 (P-148)(1081), Oct. 14, 1982, JP-A-57-109933.

Affiliated with

Also associated with

Rating

Self-advancing film cassette having separation claw for jamming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-advancing film cassette having separation claw for jamming , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-advancing film cassette having separation claw for jamming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-892777