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. 01, 2022
Filed:
Nov. 18, 2019
Applicants:
Weikai Yang, Ruao Town, CN;
Robert V. Albertson, Mound, MN (US);
Jingrong YE, Hangzhou, CN;
Timothy Florian, Tarzana, CA (US);
Inventors:
Weikai Yang, Ruao Town, CN;
Robert V. Albertson, Mound, MN (US);
Jingrong Ye, Hangzhou, CN;
Timothy Florian, Tarzana, CA (US);
Assignee:
ALBERTSON ENTERPRISES, LLC, Mound, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 13/00 (2006.01); B25B 13/46 (2006.01); B25B 23/00 (2006.01);
U.S. Cl.
CPC ...
B25B 13/462 (2013.01); B25B 23/0007 (2013.01);
Abstract
A wrench has a head with an inside cylindrical wall surrounding a body with ramps. Cylindrical rollers located between the ramps and the cylindrical wall of the head are moved into wedging positions relative to the ramps and the inside cylindrical wall with permanent magnets located in a cage assembly anchored on the body.