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:
Sep. 01, 2020
Filed:
Nov. 30, 2017
Applicant:
Wwt North America Holdings, Inc., Houston, TX (US);
Inventors:
Sarah Mitchell, Fullerton, CA (US);
Andrew Trowbridge, Anaheim, CA (US);
Assignee:
WWT NORTH AMERICA HOLDINGS, INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 41/00 (2006.01); E21B 17/14 (2006.01); E21B 43/10 (2006.01); E21B 33/14 (2006.01);
U.S. Cl.
CPC ...
E21B 43/106 (2013.01); E21B 17/14 (2013.01); E21B 33/14 (2013.01); E21B 41/0078 (2013.01);
Abstract
A casing shoe having a composite body portion, a coupling portion attached to one end of the body portion, and a one-way check valve assembly positioned in the body portion, the valve assembly and body portion having a centerline nozzle and a plurality of circumferentially spaced smaller diameter nozzles positioned around the centerline nozzle.