Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1993-06-11
1994-10-11
Stodola, Daniel P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
242 464, 2423383, 360 742, 360132, G11B 23087
Patent
active
053540131
ABSTRACT:
A tape cassette having a clutch mounted therein to permit rotation of the base reel and take-up reel in a first direction below a predetermined speed and prohibit rotation of the reels in the first direction above the predetermined speed. The tape comprises a cassette housing, a base reel, a take-up reel and a clutch mounted in the housing. In one embodiment, a spline member is slidably mounted within a sleeve of the take-up reel. The spline member has inwardly extending splines to engage the reel table and outwardly extending guide projections to engage slots formed in the sleeve. The spline member engages the reel table during an operation of the cassette below a predetermined speed. However, upon operation of the tape at a speed faster than the predetermined speed, the spline member moves axially within the sleeve away from the reel table to disengage the take-up reel from the reel table. In a second embodiment, a pawl is pivotally mounted in the housing. Below the predetermined speed of rotation, the pawl rotatively engages the take-up reel and above the predetermined speed of rotation the pawl pivots to engage the base reel to stop rotation of the reels.
REFERENCES:
patent: 3819130 (1974-06-01), Moxness
patent: 4472753 (1984-09-01), Wulfing
patent: 4482104 (1984-11-01), Saito
patent: 4512535 (1985-04-01), Dickson et al.
patent: 4702434 (1987-10-01), Brauer
patent: 4725016 (1988-02-01), Marvelli
patent: 4928905 (1990-05-01), Granzotto et al.
patent: 5005099 (1991-04-01), Perryman et al.
Nguyen John Q.
Stodola Daniel P.
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