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:
Apr. 16, 2002
Filed:
Jun. 26, 2000
Michael J. Gust, Chanhassen, MN (US);
Marvin L. Bernstrom, Eden Prairie, MN (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A fluid pressure device including a housing ( ) defining a high pressure port ( ) and a low pressure port ( ). The housing defines a shuttle bore ( ) and disposed therein is a shuttle valve assembly ( ) including a shuttle spool ( ). The shuttle spool ( ) defines a fluid passage ( ) disposed to provide fluid communication from the low pressure chamber ( ) to the shuttle outlet port ( ) as the shuttle spool moves from its neutral position (FIG. ) to the end of its centered range of positions (FIG. ). The low pressure fluid from the chamber ( ) is communicated through the fluid passage ( ) and acts on a shuttle poppet member ( ), aiding the shuttle spool ( ) and its shoulder ( ) and unseating (opening) the poppet member ( ), thus reducing the fluid pressure in the high pressure chamber ( ) required to begin opening the shuttle valve assembly ( ). Thus, diversion of fluid, for cooling or lubrication, will occur over a greater range of device operating pressures, minimizing the chance for damage to system components.