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:
Dec. 07, 2021
Filed:
Jan. 28, 2020
Jtekt Corporation, Osaka, JP;
Yoshihiro Niikawa, Kariya, JP;
Kenji Korenaga, Anjo, JP;
JTEKT CORPORATION, Osaka, JP;
Abstract
A drive force transfer device is mounted on a four-wheel-drive vehicle having main drive wheels and auxiliary drive wheels. A cam mechanism presses a main clutch in the axial direction. An electromagnetic clutch mechanism actuates the cam mechanism and has an electromagnetic coil and a pilot clutch. When the electromagnetic coil is not energized, the pressing force of the cam mechanism, which is generated because of drag torque of the pilot clutch in the case where a output rotary member rotates faster than a input rotary member, is smaller than that generated because of drag torque of the pilot clutch in the case where the input rotary member rotates faster than the output rotary member.