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:
Jul. 02, 2024
Filed:
Jun. 10, 2020
Applicant:
Circulate Plus Limited, Inverurie, GB;
Inventor:
Jonathan Peter Buckland, Inverurie, GB;
Assignee:
Circulate Plus Limited, Inverurie, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 34/10 (2006.01); E21B 34/06 (2006.01); F16K 3/26 (2006.01);
U.S. Cl.
CPC ...
E21B 34/102 (2013.01); E21B 34/063 (2013.01); F16K 3/265 (2013.01);
Abstract
A circulation valve for a well, with a housing allowing fluid flow with an outlet from the housing and a control sleeve controlling flow through the outlet. A support member supports the control sleeve, closing the outlet when the valve is in compression. The support member is slidable with respect to the control sleeve and disengages from the control sleeve when the valve is in tension, permitting movement of the control sleeve to open the outlet in response to a minimum flow rate through the valve while the valve is in tension.