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:
Aug. 20, 1991
Filed:
Mar. 09, 1989
William C Chapman, Helendale, CA (US);
Other;
Abstract
This application discloses an improvement for a conventional open-end adjustable wrench comprising a recess in the movable jaw of the wrench adapted to receive the first end of a chain. Spring biasing means on the first end of the chain to releasably retain the first end of the chain in the recess and a curved lip on the fixed jaw adapted to receive and retain the opposite second end of the chain are also disclosed. Finally, a ratchet-like motion achieved by the modified wrench is disclosed wherein the work object is engaged in a non-slip manner during the movement of the wrench handle in one direction, and in a slipping manner during the movement of the wrench handle in the opposite direction. The unique refined feature of maximum adjustment provided by the flexible movement of the wrench jaw being repositioned where the knurl is moved allows the full ratchet-like action motion to be applied to the work object.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile