Dentistry – Orthodontics – Including extra-oral force transmitting means
Patent
1984-01-23
1985-11-19
Peshock, Robert
Dentistry
Orthodontics
Including extra-oral force transmitting means
A61C 700
Patent
active
045539332
ABSTRACT:
A connector for orthodontic headgear includes a casing for a helical compression spring one end of which engages the head of a rod extending through the spring. The other end of the spring engages a sleeve supported in an aperture in the end of the casing. Such casing aperture has a straight chordal portion and the sleeve has axially spaced circumferential flanges with chordally truncated portions for enabling the sleeve to be moved axially relative to the casing flange when in one rotative position for adjusting the spring force and rotatively adjustable relative to the casing flange to hold the sleeve in a selected adjusted position. The connection is disconnectible by providing a metal clip securable to a headcap having legs engageable in grooves in the casing.
REFERENCES:
patent: 3526035 (1970-09-01), Armstrong
patent: 4115921 (1978-09-01), Armstrong
patent: 4121341 (1978-10-01), Dewoskin
patent: 4155161 (1979-05-01), Armstrong
patent: 4226589 (1980-10-01), Klein
patent: 4238188 (1980-12-01), Armstrong
patent: 4368039 (1983-01-01), Armstrong
patent: 4416625 (1983-11-01), Armstrong
Armstrong Maclay M.
Houser Steven A.
Armstrong Maclay M.
Beach Robert W.
Brown Ward
Peshock Robert
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