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:
Nov. 27, 1990
Filed:
Jun. 21, 1989
Keith H Fulmer, Mishawaka, IN (US);
Gamil M Rizk, South Bend, IN (US);
Allied-Signal Inc., Morristown, NJ (US);
Abstract
The shuttle valve (10) has a valve member (30) which includes first (32) and second (36) diameter sections disposed within small diameter (22), reduced diameter (24), and enlarged diameter (26) bore sections of a stepped bore (14) located in a valve body (12). The small diameter bore section (22) communicates with a brake feedback line connection (20), the reduced diameter bore section (24) communicates with an outlet opening (40), and the enlarged diameter bore section (26) communicates with an inlet opening (50). The second diameter section (36) of the valve member (30) includes a transverse opening (44) which communicates with a longitudinal orifice opening (46) that leads to a chamber (48) located at an end of the valve member (30). Seals (60, 70) are disposed about the first and second diameter sections (32, 36), and the valve member (30) biased by a spring (80) toward an at-rest position. Located about the first diameter section (32) of the valve member (30) is a freely movable orifice member (90) which includes a radial orifice opening (94) at one surface thereof. The sudden communication of high fluid pressure through the inlet opening (50) results in a slightly delayed displacement of the valve member (30) and movable orifice member (90), and the displacement of the valve member (30) and movable orifice member (90) then causing fluid to be communicated through the movable orifice opening (94) so that fluid communication with the outlet opening (40) is restricted.