Dentistry – Orthodontics – Bracket
Patent
1982-10-15
1984-04-17
Peshock, Robert
Dentistry
Orthodontics
Bracket
433 13, A01C 700
Patent
active
044431899
ABSTRACT:
A multi-purpose orthodontic bracket comprises two interfitting cast parts, a body and a slider, uniquely configured to secure an arch wire to the lingual side of a tooth. The body has an arch wire slot oriented for insertion of an arch wire in a direction normal to the occlusal plane. The slider has a sliding portion slidably received in a channel extending transversely of the arch wire slot in the base of the body, and a closure member having a free end positioned to span the slot when closed. The channel is acutely angled from the depthwise plane or insertion direction of the slot. The closure member of the slider is positioned to move through such plane at an obtuse angle to it so that, during closure, its free end can either push the arch wire down into the slot or clamp it against a shoulder of the body alongside the slot. The sliding portion has two longitudinally spaced pairs of oppositely-directed side fins positioned in the channel to limit how far the slider can be opened and to enable it to pivot about the body when open to interpose the end of the closure member in the slot. The body and slider have oppositely directed wings for engagement by an elastomer O-ring or elastic to rigidly secure the arch wire in the bracket with the closure member part way closed. A leaf spring in the channel is hooked by the slider in a shearing relationship to lock the slider to secure the arch wire in the bracket in a fully closed position until the spring is depressed.
REFERENCES:
patent: 3076265 (1963-02-01), Moore
patent: 3748740 (1973-07-01), Wildman
patent: 3780437 (1973-12-01), Wildman
patent: 3842503 (1974-10-01), Wildman
patent: 3854207 (1974-12-01), Wildman
patent: 4023274 (1977-05-01), Wallshein
patent: 4077126 (1978-03-01), Pletcher
patent: 4209906 (1980-07-01), Fujita
patent: 4227876 (1980-10-01), Fogel et al.
patent: 4248588 (1981-02-01), Hanson
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