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:
Dec. 01, 2015
Filed:
Jan. 24, 2012
John H. Lumkes, Lafayette, IN (US);
Mark Allen Batdorff, Washington, IL (US);
Kyle Joseph Merrill, Lafayette, IN (US);
Michael Andrew Holland, Conrad, IA (US);
Gabriel Jordan Wilfong, Carmel, IN (US);
John H. Lumkes, Lafayette, IN (US);
Mark Allen Batdorff, Washington, IL (US);
Kyle Joseph Merrill, Lafayette, IN (US);
Michael Andrew Holland, Conrad, IA (US);
Gabriel Jordan Wilfong, Carmel, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
A fluid control valve system suitable for use in fluid systems. The valve system includes at least one check valve assembly that has a controllable bidirectional flow capability. The valve system and its check valve assembly can be installed in a fluid system that contains a pump/motor to enable the displacement output of the pump/motor to be controlled. The valve system further includes a pilot valve assembly and a device for controlling the check and pilot valve assemblies. The controlling device is adapted to control the pressure of at least one pilot fluid delivered to the pilot valve assembly, which enables the check valve assembly to selectively check flow of a working fluid flowing therethrough in either of two directions.