Dentistry – Orthodontics – Tool
Patent
1993-10-05
1995-03-07
Lucchesi, Nicholas D.
Dentistry
Orthodontics
Tool
433159, 140106, 814245, A61C 300, A61C 314, B21F 100, B25B 702
Patent
active
053952367
ABSTRACT:
The pliers in overall structure resemble conventional orthodontic pliers, but have specialized jaw members adapted to effectuate necessary gingivally directed bends in the distal ends of the arch wire. With reference to an imaginary plane along which the jaw members open and close, a first jaw member projects transversely from this plane and has a free end provided with an angulated, profile facing the longitudinal axis of the pliers. A second jaw member projects transversely to the plane, and has a free end provided with a concave, preferably angulated profile adapted to mate intimately with the convex profile when the jaws are in the closed position. Each of the profiles includes an inner surface closer to the pivot joint of the pliers, oriented perpendicularly to the plane and parallel to the pliers longitudinal axis, and an outer surface farther from the pivot, oriented perpendicularly to the plane and angled obliquely to the longitudinal axis. Preferably, the dimension of the inner surface parallel to the longitudinal axis, is less than the dimension of the outer surface along the oblique angle. Preferably, the outer surface is about 2.5 mm in length, and the inner surface about 0.5 mm in length, defining a ratio of approximately 5 to 1.
REFERENCES:
patent: 715674 (1902-12-01), Lemon
patent: 2954606 (1960-10-01), Peak
patent: 3041729 (1962-07-01), Tofflemire
patent: 3804132 (1974-04-01), Mann
patent: 4073179 (1978-02-01), Hickey et al.
patent: 4081909 (1978-04-01), Garcia
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