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:
Feb. 26, 2013
Filed:
Apr. 16, 2009
Thomas D. Pate, Austin, TX (US);
Raul G. Longoria, Austin, TX (US);
Richard Smalling, Houston, TX (US);
Jeffrey R. Gohean, Austin, TX (US);
Thomas D. Pate, Austin, TX (US);
Raul G. Longoria, Austin, TX (US);
Richard Smalling, Houston, TX (US);
Jeffrey R. Gohean, Austin, TX (US);
The Board of Regents of the University of Texas Systems, Austin, TX (US);
Abstract
Systems and methods for providing a variable pumping stroke from a pump comprising a pumping chamber, a pump inlet, a pump outlet, a valving mechanism, and a drive piston. In one embodiment, the pump inlet is in fluid communication with the pumping chamber regardless of the location of the drive piston within the pumping chamber, and the pump outlet is similarly in fluid communication with the pumping chamber regardless of the location of the drive piston within the pumping chamber.