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:
Jun. 20, 2006
Filed:
Oct. 13, 2004
Celso L. Fratta, Marshall, MI (US);
Robert J. Kyle, Battle Creek, MI (US);
Keith E. Morgensai, Marshall, MI (US);
Patrick J. Mcmillan, Battle Creek, MI (US);
Celso L. Fratta, Marshall, MI (US);
Robert J. Kyle, Battle Creek, MI (US);
Keith E. Morgensai, Marshall, MI (US);
Patrick J. McMillan, Battle Creek, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A coupling device () of the type including a clutch assembly () actuation of which is responsive to fluid pressure in a clutch piston apply chamber (), and a series of fluid passages () communicating the chamber to a control valve assembly (). A housing () defines a hub portion () surrounded by a plenum member () carrying two high pressure seals (). The housing is formed such that the outer surface () of the hub portion is free of graphite porosity, to improve the life of the seals. Preferably, each of the seals () has a height/width ratio selected to provide the desired radially inward sealing force, but wherein the seals are still able to be assembled within the respective seal cavities ().