US Patent 7318511 Coupling device independent of differential speed

Patent 7318511 was granted and assigned to Eaton Corporation on January, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Eaton Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

73185110

Patent Inventor Names

John A. Grogg0

Date of Patent

January 15, 2008

Patent Application Number

111674740

Date Filed

June 27, 2005

Patent Primary Examiner

‌

Richard M Lorence

Patent abstract

A coupling device (11;111) including a rotatable housing (13,15;113) defining a clutch cavity and a clutch assembly (29;129) disposed therein. The housing defines an apply chamber (37;137) and a clutch apply member (39) disposed therein to bias the clutch assembly into engagement. A source of pressurized fluid for the clutch apply member comprises a pumping element (59,61;159,161) operable to pump pressurized fluid in response to rotation of a rotor (61;161). There is a stationary plenum assembly (51;153) defining a pumping chamber, and the pumping element is operably disposed within the pumping chamber, and a drive means (63;163) is operable to transmit rotational movement of the rotatable housing (13,15;113) to said rotor (61;161) of the pumping element, such that clutch engagement is not dependent upon coupling input-to-output speed differential.