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:
May. 14, 1991
Filed:
Jun. 05, 1989
Atsugi Motor Parts Company, Limited, Kanagawa, JP;
Abstract
A fan drive clutch is provided which includes a fluid coupling for coupling a drive shaft and a clutch housing on which a fan for blowing air to a radiator is disposed. This clutch has a pump plate for defining a fluid reservoir chamber and a working chamber. The pump plate includes a valve opening through which working fluid passes from the reservoir chamber into the working chamber. The fan drive clutch further includes a valve arm which has a valve plate for opening and closing the valve opening. The valve arm includes an elastically transformable section at a connecting portion between it and the valve plate. This section is operable to absorb movement of the valve arm which may be caused due to a clearance between the shaft for supporting the valve arm and the bearing hole for rotatably supporting the shaft. Therefore, an entire surface of the valve plate is maintained in contact with the facing surface of the pump plate to hermetically close the valve opening without occurrence of any gap therebetween regardless of the movement of the valve arm.