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:
Aug. 13, 2019
Filed:
Jan. 23, 2015
Applicant:
Cdi Energy Products, Inc., Humble, TX (US);
Inventor:
Stephen Earl Smith, League City, TX (US);
Assignee:
CDI ENERGY PRODUCTS, INC., Humble, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/04 (2006.01); F04B 53/02 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01);
U.S. Cl.
CPC ...
F04B 1/0448 (2013.01); F04B 53/02 (2013.01); F04B 53/143 (2013.01); F04B 53/162 (2013.01);
Abstract
A piston pump including a cylinder body having an internal fluid chamber, a piston configured to axially cycle within the cylinder body, an inlet valve, an outlet valve, an annular seal positioned between the piston and cylinder body, a barrier fluid pocket formed in the cylinder body adjacent one end of the annular seal, and a barrier fluid contained within the barrier fluid pocket, the barrier fluid preventing suspended solids in pumped fluid from contacting the annular seal.