The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 1990
Filed:
Mar. 23, 1988
Applicant:
Inventors:
Clarence W Hannan, San Dimas, CA (US);
Wilford A Snead, San Dimas, CA (US);
Jirina V Pospisil, Monrovia, CA (US);
Robert P Eckert, Alta Loma, CA (US);
Assignee:
Unitek Corporation, Monrovia, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433-3 ;
Abstract
Debonding of cemented orthodontic brackets from teeth by application of a quick twisting force to fracture the adhesive bond. A torquing tool has slotted ends making a close slip fit over mesial and distal side surfaces of the bracket, and has a flattened center section providing a good tactile sense of applied force. The method and tool are especially useful with brackets made of brittle ceramic material.