Thread storage and dispensing system

Details Thread storage and dispensing system Thread storage and dispensing system

1976-11-22

1977-09-27

Christian, Leonard D.

Winding, tensioning, or guiding

Support for a strand material holder

With brake for holder and/or strand

225 63, 2421184, 2421371, B65H 7514, B65H 4900

Patent

active

040506487

ABSTRACT:
A spool of thread, such as dental floss, is housed in a two-part shell or holder, preferably made of plastic, one of the two parts having a central post coaxially located therein. The thread or floss is wound on a bobbin having a clutch molded in its hub area. The clutch comprises a split cylinder having a generally C-shaped cross section with three equally spaced ribs running along the internal length thereof. The C-shape of the split cylinder embraces the central post and the surfaces of the three ribs provided areas for friction gripping the central post. The friction keeps the bobbin from unwinding; however, the friction is not so great that it keeps the thread or floss from pulling smoothly and evenly from the bobbin.

REFERENCES:
patent: 2145178 (1939-01-01), Hawkins
patent: 2550944 (1951-05-01), Stack
patent: 3106363 (1963-10-01), Epstein
patent: 3270980 (1966-09-01), Philips
patent: 3312410 (1967-04-01), Strothmann

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