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:
Apr. 24, 2007
Filed:
Mar. 10, 2004
Applicants:
Carlos A. Aloise, Chino, CA (US);
Gary T. Garman, La Verne, CA (US);
Inventors:
Carlos A. Aloise, Chino, CA (US);
Gary T. Garman, La Verne, CA (US);
Assignee:
Ormco Corporation, Orange, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C 5/10 (2006.01); B21F 43/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Method for manufacturing endodontic instruments having either helical or non-helical flutes with hard surfaces and resilient cutting edges by either an EDM or ECM process, wherein material is removed from the instrument blank in the desired flute pattern. The EDM or ECM process disintegrates the surface material, and as it cools, at least a portion of the removed material re-deposits onto the surface being machined to form a recast layer having a surface hardness that is at least about 15% greater than the hardness of the material forming the instrument blank.