Reel lock mechanism for locking tape reels in a tape cassette

Details Reel lock mechanism for locking tape reels in a tape cassette Reel lock mechanism for locking tape reels in a tape cassette

1995-07-14

1997-04-22

Darling, John P.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Cartridge system

G11B 23087

Patent

active

056223250

ABSTRACT:
In a reel lock mechanism for a tape cassette in which a ratchet opening spring can be easily attached to reel lock ratchets, the ratchet opening spring (14) includes two coil portions (14a, 14b) mounted on shaft portions (20d, 20d) of a pair of reel lock ratchets (12, 13) and a pair of ratchet opening arms (14d, 14e) for spring-biasing ratchet portions (20c, 20c) toward ratchet wheels (8, 8) on the tape reels (2a, 3a). The pair of reel lock ratchets (12, 13) include a ratchet-side stopper (20f) and a reel lock body (11) includes a body-side stopper (11e) which can be engaged with the ratchet-side stopper (20f). When the ratchet-side stopper (20f) and the body-side stopper (11e) are engaged with each other, the ratchet opening spring (14) generates a spring force to bias the pair of reel lock ratchets (12, 13) under such spring force.

REFERENCES:
patent: 4225100 (1980-09-01), Sugawara
patent: 4524596 (1985-06-01), Tsunekawa et al.
patent: 4903915 (1990-02-01), Iwahashi
patent: 5224005 (1993-06-01), Fujii
patent: 5297753 (1994-03-01), Abe
patent: 5348244 (1994-09-01), Nakagawa
patent: 5433398 (1995-07-01), Sawada
patent: 5454527 (1995-10-01), Mizutani et al.
patent: 5506739 (1996-04-01), Iwahashi

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