1976-09-07
1978-02-21
Peshock, Robert
A61C 700
Patent
active
040744337
ABSTRACT:
Disclosed is an orthodontic appliance for intermaxillary tooth correction comprising a pair of housings adapted to be connected to teeth in the upper and lower jaws respectively. Each housing has a pulley joined together by a pull cable with springs acting to draw the ends of the cable in opposite directions. The cables are wound in opposite directions so that the cable ends need not be centered in the housings. This facilitates assembly of the devices in which both are made of identical parts for ease of manufacture.
REFERENCES:
patent: 3654702 (1972-04-01), Kelly
patent: 3921295 (1975-11-01), James
Hamilton Technology, Inc.
Peshock Robert
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