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. 22, 2008
Filed:
May. 23, 2007
Donald Glynn Sims, Houston, TX (US);
Michael James Taylor, Tomball, TX (US);
Robert Frank Schmidt, Cypress, TX (US);
David Anthony Schmidt, Houston, TX (US);
John Walton Mccaskill, Jersey Village, TX (US);
Donald Glynn Sims, Houston, TX (US);
Michael James Taylor, Tomball, TX (US);
Robert Frank Schmidt, Cypress, TX (US);
David Anthony Schmidt, Houston, TX (US);
John Walton McCaskill, Jersey Village, TX (US);
Expro Americas, L.P., Houston, TX (US);
Abstract
A strainer system having two separate strainers positioned in parallel, where one strainer can be cleaned while still permitting normal flow through the other strainer. The system flow circuit is arranged so that a high pressure backwashing flow can be applied to one strainer while the other strainer is providing its normal straining function. The backwashed strainer is then isolated by valves so that its access flange can be removed and the particulate buildup within the valve plug cleaned out. The strainer is then returned to service following the replacement of the access flange. In this manner, it is possible to alternate between the two strainers so that continuous flow can be maintained to the hydraulic choke located downstream of the strainer system.