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. 22, 2020
Filed:
Aug. 31, 2018
Applicant:
Industrial Technology Research Institute, Hsin-Chu, TW;
Inventors:
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01L 3/00 (2006.01); G01N 35/04 (2006.01); B67B 3/20 (2006.01); B25B 23/142 (2006.01);
U.S. Cl.
CPC ...
B01L 3/50825 (2013.01); B67B 3/2066 (2013.01); G01N 35/04 (2013.01); G01N 2035/0405 (2013.01);
Abstract
A magnetic screwdriver device includes one pad without magnetism, one driving shaft, and one driven shaft. The two shafts, which have magnetic attraction between each other, are disposed on opposite sides of the pad respectively and attract to each other. The driving shaft is used to transmit torque to actuate the driven shaft rotation. When the torque out of predetermined value overcomes the friction force between the driven shaft and the pad, the driven shaft will be stop.