Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1983-06-23
1985-12-10
Christian, Leonard D.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
242190, B65H 5938, G03B 104, G11B 1532
Patent
active
045574332
ABSTRACT:
A tape cassette, in particular a video cassette, comprises two flanged reels and, between the flanges of each reel, a spring member as a biassing means to prevent the tape from slipping off the roll or folding over. The spring members can be attached to the side walls or rear wall of the housing, and their free ends constantly bear against the peripheries of the tape rolls. In specific embodiment the spring member advantageously includes the braking spring for a reel-braking device. By using a conductive material on one or both sides of the spring member and appropriately arranging the spring member relative to a tape guide element or to an element grounded on the tape recorder, it is possible to directly prevent tape loop formation, which is a cause of tape slippage and folding-over. Moreover, tape winding and unwinding are improved.
REFERENCES:
patent: 2326654 (1943-08-01), Jagust
patent: 2353044 (1944-07-01), Kriegsheim
patent: 3549106 (1970-12-01), Stark
patent: 3601654 (1971-08-01), Long et al.
patent: 3632052 (1972-01-01), Read
patent: 3833185 (1974-09-01), Talavera
patent: 4014042 (1977-03-01), Schoettle et al.
patent: 4022402 (1977-05-01), Morimoto
patent: 4382565 (1981-01-01), Shiba
Balz Werner
Berger Heinz
Fitterer Horst
Muenzner Wulf
Roos Roland
BASF - Aktiengesellschaft
Christian Leonard D.
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