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:
Jun. 11, 2002
Filed:
Feb. 08, 1999
Applicant:
Inventor:
Frank Lin, Tao Yuan Hsien, TW;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 2/300 ; F16B 3/506 ;
U.S. Cl.
CPC ...
F16B 2/300 ; F16B 3/506 ;
Abstract
Disclosed is a screw with an improved head, in which a stress-relieving notch is formed at each corner of a driving recess on the screw head. The stress-relieving notch is in an equal arcuate shape. Apart from the well known slotted or Phillips one, the driving recess is also available with a triangle, square, hexagonal, or any other multiangular form in section.