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:
Mar. 23, 2010
Filed:
Apr. 29, 2005
George Telfer, Aberdeen, GB;
Edward Docherty Scott, Fife, GB;
George Telfer, Aberdeen, GB;
Edward Docherty Scott, Fife, GB;
Specialised Petroleum Services Group Limited, Aberdeen, GB;
Abstract
A ball valve seat () is disclosed which provides a temporary seal for a plug (). The valve seat comprises a substantially cylindrical body () of a first volume, which defines a seating surface (). A pressure differential is developed across the valve seat when the plug sealingly engages the seating surface. The body is formed of an elastic material which compresses from a first volume to a smaller second volume by application of a force on the plug, to provide a clearance which is greater than a plugging dimension of the plug, thus allowing passage of the plug downstream. After passage of the plug, the body returns to the first volume.