Winding – tensioning – or guiding – Convolute winding of material – With feeder
Patent
1998-07-15
1999-11-30
Jillions, John M.
Winding, tensioning, or guiding
Convolute winding of material
With feeder
2425355, 2425451, 2425972, 2425974, 242608, B65H 1812, B65H 2022, B65H 2304
Patent
active
059927917
ABSTRACT:
A tape take-up for taking up a tape, including a first member having a first friction surface; and a second member including a drum portion for taking up the tape, and having a second friction surface, the drum portion having an axis line, at least one of the first and second friction surfaces including an annular friction surface concentric with the drum portion, the first and second members being combined with each other such that the first and second members are rotatable relative to each other about the axis line of the drum portion while the first and second friction surfaces are held in contact with each other, one of the first and second members including a permanent magnet, the other of the first and second members including a magnetic portion formed of a magnetic material, the permanent magnet and the magnetic portion having respective shapes which ensure that the permanent magnet and the magnetic portion are opposed to each other at any relative angular phase between the first and second members, the permanent magnet exerting, to the magnetic portion, a magnetic attraction force which causes the first and second friction surfaces to be held in contact with each other while the second member is not subjected to an external force greater than the magnetic attraction force, the magnetic attraction force permitting the second member to be separated from the first member when the second member is subjected to the external force.
REFERENCES:
patent: 2437997 (1948-03-01), Charlin
patent: 2684210 (1954-07-01), Conti
patent: 2845232 (1958-07-01), Johnson et al.
patent: 2946530 (1960-07-01), Trimble
patent: 3338488 (1967-08-01), Hunt
patent: 4440355 (1984-04-01), Mori et al.
patent: 4687152 (1987-08-01), Hawkswell
Hosono Makoto
Kuno Tokiyuki
Tsuda Mamoru
Fuji Machine Mfg. Co. Ltd.
Jillions John M.
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