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. 22, 2001
Filed:
May. 17, 1999
Evan R. Baker, Camas, WA (US);
Kip E. Clohessy, Milwaukie, OR (US);
Fred L. Ewer, Clackamas, OR (US);
Thomas W. Giacomini, Livonia, MI (US);
Scott J. Pugliese, Portland, OR (US);
O. Lance Scrivens, Clackamas, OR (US);
Thomas F. Dunlap, West Linn, OR (US);
Jon A. Bigley, Livonia, MI (US);
Warn Industries, Inc., Milwaukie, OR (US);
Abstract
An annular actuator for moving a member axially to couple and un couple a drive member with a driven member of a vehicle drive train. The actuator encircles the drive and driven member. The actuator has a housing to which a diaphragm is mounted. A spring biases the diaphragm to move in one axial direction and withdrawal of air forces the diaphragm to move in the opposite axial direction. A shifting fork coupled to the diaphragm moves a clutch ring in the one axial direction to be coupled with only one of the drive and driven members and is coupled with both the drive and driven members when moved in the opposite direction. The actuator defines a sealed chamber that is totally non-rotatable with relative movement occurring between the shifting fork and the clutch ring.