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, 2015
Filed:
Apr. 10, 2012
Atsutoshi Ikegawa, Paris, FR;
Atsutoshi Ikegawa, Paris, FR;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-shi, Aichi, JP;
Abstract
A compact-size electromagnetic clutch reaches a blocking state as an electromagnetic solenoid is switched from a non-driving state to a driving state and can save wasteful consumption of energy under this blocking state. This electromagnetic clutch includes a wrap spring in pressure-contact with an outer face of a cylindrical portion of a drive pulley provided on the center side thereof. One end of the wrap spring is coupled to a drive arm of a drive member operably connected to a shaft. The other end of the wrap spring is coupled to an operational member rotatable relative to the shaft and movable along the rotational axis thereof. An electromagnetic solenoid attracts the operational member. An operational mechanism permits realization of the blocking state by preventing rotation of the drive member after a twisting operation of the wrap spring subsequent to the attraction of the operational member by this electromagnetic solenoid.