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. 23, 1999
Filed:
Jun. 06, 1997
Applicant:
Inventor:
Peter Constantine Chaconas, Glyndon, MD (US);
Assignee:
Hand Tool Design Corporation, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81436 ; 81186 ; 81461 ;
Abstract
A hexagonal head wrench having a body, six sides and six corners. A protuberance is formed on each corner. Each protuberance has two oppositely oriented flank members angled at a predetermined angle outwardly and away from each corner. Engagement of the wrench with a fastener occurs on a portion of each respective flank member distal from the corner. Continued application of torque progressively radially engages each flank member with the fastener.