Dentistry – Orthodontics – By device having means to apply outwardly directed force
Patent
1979-11-19
1982-04-06
Mancene, Gene
Dentistry
Orthodontics
By device having means to apply outwardly directed force
254 98, A61C 300
Patent
active
043233457
ABSTRACT:
Orthodontic biassing devices including various means for preventing screw actuators from becoming disengaged from the body member in which it is cooperatively threadably engaged. The disengagement preventing means may include means directly associated with the screws, and/or stabilizing and retaining rod-like members which are slideably engaged with at least one of the body members of the biassing device. Further disclosed is a means for preventing screws of biassing devices from being backed into the body members due to external pressures applied thereto.
REFERENCES:
patent: 989035 (1911-04-01), Parker et al.
patent: 1559045 (1925-10-01), McColley
patent: 1593217 (1926-07-01), Lucker
patent: 2080530 (1937-05-01), Brush
patent: 2266860 (1941-12-01), Griesinger
patent: 2310942 (1943-02-01), Donges
patent: 3284902 (1966-11-01), Dillberg et al.
patent: 3835540 (1974-09-01), Biederman
patent: 4107843 (1978-08-01), Spino et al.
Mancene Gene
Wilson John J.
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