Michael J Pickett

US Patent:

52340317, Aug 10, 1993

Filed:

Sep 1, 1992

Appl. No.:

7/938790

Inventors:

Michael G. Pickett - South Bend IN
Thanh Ho - Mishawaka IN
Richard T. Hendrickson - South Bend IN

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

F15B 13044

US Classification:

13759617

Abstract:

The combination solenoid valve and shuttle valve (60) with self-cleaning orifice (92) comprises a shuttle valve (50) which is slidingly and sealingly received at an end (40D) of the solenoid valve (40). The shuttle valve (50) includes a stepped interior opening (54) which includes an insert (55) providing a shuttle valve seat (91) opposite a self-aligning solenoid valve seat assembly (94) of the solenoid valve (40). The valve seat (91) of the shuttle valve (50) includes an orifice (92) which extends from an end opening (70) of the insert and communicates with an insert passage (63) at an outer radial portion of the insert (55). An opposite radial side of the insert (55) includes a port (67) which communicates with a longitudinal passage (66) of the insert (55). Disposed within the longitudinal passage (66) is a brake-master cylinder check valve (59), and a stabilization check valve (58) adjacent a filter element (80) which permits communication with the insert passage (63). The shuttle valve (50) includes an end passage (64) having a pump check valve (57) and which communicates with an interior cavity (65) of the insert member (55).