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. 11, 2001
Filed:
Sep. 21, 1999
Yuji Kobayashi, Yokohama, JP;
Nifco Inc., Yokohama, JP;
Abstract
A torque limiter is formed of a shaft, a cylindrical magnet attached to an outer periphery of the shaft, and a housing for rotationally supporting the axial ends of the shaft and formed of first and second housing portions. A magnetizable member in a cylindrical shape is attached to inner peripheries of the first and second housing portions to thereby form a space between cylindrical portions of the first and second housing portions. The magnetizable member faces an outer periphery of the magnet with a predetermined gap therebetween when the magnet is inserted into the magnetizable member. A ring containing magnetizable materials therein is attached to the space on an outer periphery of the magnetizable member. The ring changes an apparent volume of the magnetizable member, so that torque of the torque limiter is adjusted by selecting a proper ring.