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. 22, 2003
Filed:
Jun. 26, 2001
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 3/502 ;
U.S. Cl.
CPC ...
F16D 3/502 ;
Abstract
In a fan coupling device in which the interior of a sealed housing supported and born by a rotary shaft having a driving disc secured thereto is separated by a partition plate having an oil supply adjusting hole into an oil reservoir and a torque transmission chamber in which the driving disc is contained and in which driving torque is transmitted to a driven side by oil supplied to the torque transmission chamber, a non-excited electromagnet utilizing a permanent magnet located in the oil reservoir of the sealed housing being supported around the rotary shaft, the valve member being actuated by the electromagnet to provide a mechanism for controlling the opening and closing of the oil supply adjusting hole.