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. 02, 2016
Filed:
Nov. 09, 2006
Partha Ganguly, Belmont, MA (US);
Jahir Pabon, Wellesly, MA (US);
Joe Hubenschmidt, Sugar Land, TX (US);
Nathan St. Michel, Houston, TX (US);
Rod Shampine, Houston, TX (US);
Partha Ganguly, Belmont, MA (US);
Jahir Pabon, Wellesly, MA (US);
Joe Hubenschmidt, Sugar Land, TX (US);
Nathan St. Michel, Houston, TX (US);
Rod Shampine, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A multi-step autofrettage process for pre-treating a multi-cylinder reciprocating pump fluid end that has a central cylinder and at least two side cylinders is provided that includes autofrettaging the central cylinder; and autofrettaging the at least two side cylinders, wherein the autofrettaging of the central cylinder is performed independently of the autofettaging of the at least two side cylinders.