Orthodontic biassing device with screw disengagement preventing

Details Orthodontic biassing device with screw disengagement preventing Orthodontic biassing device with screw disengagement preventing

1977-04-07

1980-05-06

Kinsey, Russell R.

Dentistry

Orthodontics

By device having means to apply outwardly directed force

A61C 700

Patent

active

042009790

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: 360695 (1887-04-01), Holmes
patent: 989035 (1911-04-01), Parker et al.
patent: 1593217 (1926-07-01), Lucker
patent: 3284902 (1966-11-01), Dillberg et al.
patent: 3832778 (1974-09-01), Wallshein
patent: 4107843 (1978-08-01), Spino et al.

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