Orthodontic O-ring and ligator therefore

Details Orthodontic O-ring and ligator therefore Orthodontic O-ring and ligator therefore

1977-09-19

1980-08-19

Jones, Jr., James L.

Metal working

Method of mechanical manufacture

Obtaining plural product pieces from unitary workpiece

81302, 433 4, 433 13, B23P 1700

Patent

active

042176867

ABSTRACT:
The disclosure is directed to an orthodontic O-ring assembly which comprises a plurality of orthodontic O-rings integrally molded to a core which can be readily wrapped about an orthodontist's hand and the respective O-rings being individually dispensed by a ligator. The ligator comprises a tool having relatively moveable jaws which are sized so as to be received within the internal diameter of the O-ring in the closed position and thereafter moved to an open or expanded position to effect the stretching of the O-ring to be dispensed, thereby causing the O-ring to separate from its core at a frangible point. In a modified form of the invention, the ligator may be provided with a lock to maintain the ligator in the open jaw position.

REFERENCES:
patent: 1428357 (1922-09-01), Bullard
patent: 1810631 (1931-06-01), Trump
patent: 3416650 (1966-12-01), Mortensen
patent: 3530583 (1970-09-01), Klein et al.
patent: 4106374 (1978-08-01), Dragan

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