Title: Orthodontic headgear release assembly

Abstract: Safety-release tension-applying mechanism for use between an orthodontic facebow and a headstrap and the like therefor. The mechanism includes a pair of releaseably interengageable portions which, while engaged, are smoothly elastically shiftable relative to one another throughout a preselected tension range. These portions automatically release on the tension transmitted through the mechanism exceeding a predetermined maximum tension level.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Klein, Paul E. (Lake Oswego, OR, US)

Application Number: 827727
Filing Date: 1977-08-25
Publication_date: 1980-10-07
Assignee:
Primary Class(es): 433/5 24/602, 24/686
Other Classes:
US Patent Ref:

1752619	Apr, 1930	Summerfeld	24/115.
2452796	Nov, 1948	Skibsted	24/115.
2518179	Aug, 1950	Quinby et al.	24/115.
2940622	Jun, 1960	Kays	24/201.
3439387	Apr, 1969	Churches	24/1TR.
3686757	Aug, 1972	McVickers et al.	32/14.
4115921	Sep, 1978	Armstrong	32/14.

Other Refs:
Primary Examiner: Mancene, Louis G.
Assistant Examiner: Foycik, Jr., Michael J.
Attorney: Kolisch, Hartwell & Dickinson