Gary H Hafemeister

US Patent:

7875171, Jan 25, 2011

Filed:

Nov 1, 2007

Appl. No.:

11/933575

Inventors:

Lev Pekarsky - W. Bloomfield MI, US
Timothy A. Droste - Howell MI, US
Gary H. Hafemeister - Plymouth MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

B01D 35/02
B01D 35/147

US Classification:

210132, 210472

Abstract:

A filter assembly includes a filter housing including an inlet, through which hydraulic fluid enters the housing, and an outlet, through which hydraulic fluid exits the housing, valve housing containing a bypass valve located adjacent the inlet in a chamber, the valve including an orifice that opens and closes in response to differential pressure across the valve, and a screen secured to the valve housing and covering the orifice, the screen having a fine mesh for removing contaminants from the fluid that flows through the valve.

US Patent:

20050055818, Mar 17, 2005

Filed:

Sep 12, 2003

Appl. No.:

10/662103

Inventors:

Lev Pekarsky - W. Bloomfield MI, US
Yee Chow - Canton MI, US
Gregory Gardner - Livonia MI, US
Eric Nary - Macedon NY, US
Gary Hafemeister - Plymouth MI, US
Charles Schwab - Fort Mill SC, US
Allan Hall - Victor NY, US

International Classification:

B23P011/02

US Classification:

029451000

Abstract:

A method for assembling components that are sealed hydraulically or pneumatically includes forming an outer component having an inner surface, a groove for holding a seal, the groove having an opening at the inner surface. A seal is fabricated in the form of a substantially circular ring having a scarf cut extending through the width and the thickness of the seal, and a second inner surface having an inside diameter. The seal is then placing over a mandrel having a diameter that is larger than the inside diameter of the second inner surface so that the seal is expanded by plastic deformation such that a gap is formed at the scarf cut. Then the seal is inserted in the groove while the seal is expanded.