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:
Nov. 19, 2013
Filed:
Dec. 02, 2009
Yusuke Ishikawa, Tokyo, JP;
Yusuke Ishikawa, Tokyo, JP;
GC Corporation, Tokyo, JP;
Abstract
For certainly handling a screw member, a screw memberincludes a male screw, and an inner peripheral face of the holehas an engaging recessed partto be engaged with an engaging projected partof a tapered engaging partof a rotary tool, and a stepped part, said inner peripheral face is parallel or make close to a center axisof the screw memberfrom the head partin a direction of the male screw and from the stepped partin the direction of the male screw, and head part side end edgeand an end edge of the stepped partto be engaged with the engaging projected parthave an angle of said inner peripheral face being 90±5 degrees with respect to the head partand the stepped part