Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1985-11-18
1987-03-24
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 685, 400697, B65H 1602
Patent
active
046519432
ABSTRACT:
A spool for a reversible-type correction tape assembly comprising a cap and a spool shaft and improved releasable fastening means therebetween. The spool shaft is adapted to receive a correction ribbon-winding core axially-slideable, but not rotatable around the axis thereof. The spool shaft comprises a sleeve having a top cap-receiving section which has an outer cap-engaging surface which receives a cap detachably mounted thereon so that the winding core does not slip off of the spool shaft. The cap has a depending wall having an inner shaft-engaging surface for engaging the cap-engaging surface of the spool shaft. The engaging surface of the cap or of the spool shaft is provided with a projection extending in a radial direction, and the other engaging surface is provided with a recess or hole capable of receiving the projection. The portion of the engaging surface having the projection or the portion having the recess or hole is capable of being bent or flexed when the cap is twisted to release the engagement between the projection and the recess or hole so that the cap can be lifted off of the spool shaft. The cap cannot be released when only an axial cap-pulling force is added. The cap can be easily detached by twisting but is securely fastened against loosening during use.
REFERENCES:
patent: 2142582 (1939-01-01), Wright
patent: 2381535 (1945-08-01), Gemmel
patent: 2755037 (1956-07-01), Sarah
patent: 3313561 (1967-04-01), Kirilouckas
patent: 3851833 (1974-12-01), Jackson
patent: 4518128 (1985-05-01), Watanabe
Jillions John M.
Kagakushi Kogyo Co., Ltd.
Tully Thomas L.
Watanabe Hiroaki
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