Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1995-10-10
1997-04-22
Darling, John P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
2423471, G11B 23087
Patent
active
056223269
ABSTRACT:
A tape cassette with a pivotal lid having a tape wound on reels inside a cassette made up of upper and lower shells and light holes in the sides of the cassette for detecting the ends of the tape using light beams is made easy to assemble by dustproofing ribs for preventing dust and the like from entering through the light holes each being split into two dustproofing rib parts, one of these parts being provided on the pivotal lid and the other being provided on the lower shell. The dustproofing rib parts are so disposed that with the pivotal lid in an open position the upper shell can be assembled to the lower shell easily in one straight-line movement without its direction being changed. Facing surfaces of the two dustproofing rib parts constituting each dustproofing rib are sloping or stepped to effectively prevent dust from passing between the dustproofing rib parts.
REFERENCES:
patent: 4591936 (1986-05-01), Kikuya et al.
patent: 4993661 (1991-02-01), Tollefson
patent: 5198951 (1993-03-01), Fujii
patent: 5295637 (1994-03-01), Takeda et al.
patent: 5351910 (1994-10-01), Hara
patent: 5475555 (1995-12-01), Iwano et al.
Darling John P.
Frommer William S.
Sinderbrand Alvin
Sony Corporation
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