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:
Oct. 16, 2012
Filed:
Oct. 22, 2009
Michael John Chaplin, Nr Nuneaton, GB;
Simon Christopher Ash, Newark, GB;
Michael John Chaplin, Nr Nuneaton, GB;
Simon Christopher Ash, Newark, GB;
Reeves Wireline Technologies Limited, Leicestershire, GB;
Abstract
A valve assembly () comprises a drillpipe () defining a hollow, generally cylindrical interior having secured therein a valve member () that is moveable between an open position, permitting passage of an object through the valve (), and a closed position preventing passage of fluids along the drillpipe (). A resiliently contractile arm () interconnects the valve member () and the drillpipe () so as to urge the valve member () towards the closed position and such that when an object passes along the drillpipe () and engages the valve member () or the arm () the valve member () occupies the open position.