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. 06, 1988
Filed:
Apr. 22, 1986
Applicant:
Inventor:
Edwin Fitzwater, Rahway, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25G / ;
U.S. Cl.
CPC ...
811771 ; 811776 ; 745519 ;
Abstract
An apparatus, such as a screw driver, has a working member and a handle attached to the working member. The handle is of a predetermined cross-sectional shape when the tool is at rest. When incremental torque is applied to the handle is changes from the predetermined cross-sectional shape to another cross-sectional shape. As a result, the tool can have a cross-sectional shape, such as round, for low torque uses and a more suitable cross-sectional shape, such as oblong or triangular, for high torque uses. The handle returns to its predetermined shape when the high torque is released.