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. 06, 2021
Filed:
Oct. 10, 2017
Sanden Automotive Components Corporation, Isesaki, JP;
Yuki Sakamoto, Isesaki, JP;
Sanden Automotive Components Corporation, Isesaki, JP;
Abstract
Provided is an electromagnetic clutch capable of shortening, even in a low temperature atmosphere, the fuse reaction time from when a rotating shaft is locked, while preventing or suppressing malfunction of the thermal fuse. An electromagnetic clutchis equipped with a rotor, an armature, an electromagnetic coil unit, a thermal fuse, and a thermally actuated switch. The thermally actuated switchis connected in series to an electromagnetic coilof the electromagnetic coil unitalong with the thermal fuse. When a temperature of the thermally actuated switchexceeds a switching temperature (predetermined temperature) Ts, the thermally actuated switchis displaced in an electric power supply OFF direction, and thereafter, it is displaced in an electric power supply ON direction due to a reduction in temperature. The thermally actuated switchturns ON/OFF the electric power supply to the electromagnetic coilsuch that the thermal fuse vicinity temperature Tdoes not exceed the operational temperature Tf of the thermal fusedue to self-heating of the electromagnetic coilitself generated by the electric power supplied to the electromagnetic coil, thereby preventing malfunction of the thermal fusedue to self-heating of the electromagnetic coil