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. 19, 2008
Filed:
Mar. 31, 2006
David R. Erickson, Memphis, TN (US);
Wilder Companioni, Cordova, TN (US);
David R. Erickson, Memphis, TN (US);
Wilder Companioni, Cordova, TN (US);
SDGI Holdings, Inc., Wilmington, DE (US);
Abstract
The present application is directed to screwdrivers and methods of use for applying a controlled amount of torque to a fastener. In one embodiment, the screwdriver includes a shaft constructed of a material that is deformable upon the application of an excessive amount of torque. The deformation may cause the screwdriver to disengage from the fastener. In one embodiment, the tip of the shaft that engages the fastener is constructed of a material that deforms when an excessive amount of torque is applied to the fastener. The deformation causes the tip to disengage from the fastener. The deformation prevents the screwdriver from applying an amount of torque above a predetermined limit.