Film cassette with spool lock

Details Film cassette with spool lock Film cassette with spool lock

1993-03-22

1994-03-22

Gellner, M. L.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 711, G03B 1726

Patent

active

052968863

ABSTRACT:
A film cassette adapted to be opened and closed comprises a film spool supported for rotation, and a lock for inhibiting rotation of the film spool when the cassette is closed and allowing the film spool to rotate when the cassette is opened. According to the invention, a retainer keeps the lock in place to make it inhibit rotation of the film spool when the cassette is opened, but allows the film spool to be initially forcibly rotated to move the lock out of place to then allow the film spool to be freely rotated. Thus, the film spool must be rotated to discontinue the affect of the lock after the cassette is opened.

REFERENCES:
patent: 2731894 (1956-01-01), Leitz et al.
patent: 4221479 (1980-09-01), Harvey
patent: 4225034 (1980-03-01), Harvey et al.
patent: 4938429 (1990-07-01), Robertson et al.
patent: 4962401 (1990-10-01), Takahashi
patent: 5030978 (1991-07-01), Stoneham et al.
patent: 5049912 (1991-09-01), Pagano et al.
patent: 5115268 (1992-05-01), Kitagawa et al.
patent: 5200777 (1993-04-01), Zander

Affiliated with

Also associated with

Rating

Film cassette with spool lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Film cassette with spool lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film cassette with spool lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-440051