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. 05, 1991
Filed:
Jan. 13, 1989
Charles B Worrick, III, Hanson, MA (US);
John A Santangelo, East Freetown, MA (US);
Codman & Shurtleff, Inc., Randolph, MA (US);
Abstract
A rongeur with special features applied to the footplate area to prevent the intersection of stress fields to allow the rongeur to be reduced in size and mass without materially reducing the strength of the rongeur. A transverse groove is used at the intersection of the anvil surface of the base plate and the shank base plane. Also the base of the footplate recess is offset from the shank base plane and the inside wall of the recess meets the recess base in a gentle curve. These features can be used individually or together to prevent the intersection of stress fields in the footplate area and thus allow the size of the footplate to be reduced without materially reducing the strength of the rongeur.