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:
Sep. 09, 1980
Filed:
Dec. 28, 1978
Charles F Mazzeo, Scotch Plains, NJ (US);
William T Waddington, Edison, NJ (US);
Amerace Corporation, New York, NY (US);
Abstract
An elongated sleeve or tubular member is provided concentrically fixed about the shank of a screwdriver with the sleeve having an axially flexible section between its opposed ends to facilitate axial shortening of the sleeve when the screwdriver is used to rotate a fastener the head of which is captured within the open end of the sleeve proximal to the blade of the screwdriver. Such axial shortening of the sleeve automatically seats the screwdriver blade within the slot in the head of the fastener when the frictional force between the screw's threads and those of the tapped hole into which it is being driven overcomes the interference fit between the free end of the sleeve and the screw head.