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:
Apr. 16, 2019
Filed:
Apr. 08, 2017
Applicant:
Hui-hsueh Chung, Taichung, TW;
Inventor:
Hui-Hsueh Chung, Taichung, TW;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B25B 13/46 (2006.01);
U.S. Cl.
CPC ...
B25B 13/463 (2013.01);
Abstract
A selectively one-way wrench includes a head, a rotor, a pawl assembly, a switch, a connecting element and an auxiliary element. The pawl assembly includes two pawls. The switch is operable to disengage one of the pawls from the rotor and engage the other pawl with the rotor via the connecting element. The auxiliary element is used to tightly press one of the pawls against the rotor at a time.