Support shaft for winding/unwinding sheets

Details Support shaft for winding/unwinding sheets Support shaft for winding/unwinding sheets

1987-12-24

1988-08-30

Werner, David

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 72R, 242 72B, 279 2R, 279 2A, B65H 7524, B23B 3140

Patent

active

047670770

ABSTRACT:
A support shaft for winding/unwinding sheets comprises a ring with the outer periphery thereof formed with a plurality of inclined grooves circumferentially spaced apart and with the bottoms of the inclined grooves inclined in the circumferential direction, rollers accommodated in respective inclined grooves for rolling in the longitudinal direction thereof to progressively increase the extent of projection therefrom with rotation of the ring, and an outer ring with a gap surrounding the ring with rollers.

REFERENCES:
patent: 2561745 (1951-07-01), Lerch
patent: 3593938 (1971-07-01), Watt
patent: 3817468 (1974-06-01), Smolderen et al.
patent: 3917187 (1975-11-01), Damour
patent: 3963250 (1976-06-01), Flagg
patent: 4496114 (1985-01-01), Kataoka
patent: 4519620 (1985-05-01), Keith

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