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:
Aug. 07, 1979
Filed:
Apr. 18, 1977
Lawrence Sanford, Houston, TX (US);
Other;
Abstract
The invention comprises an inflatable packer comprising a tubular mandrel having a port extending radially therethrough. An elastomeric valve element is resiliently urged against the exterior of the mandrel to cover the port. A generally tubular packer body surrounds the mandrel and comprises a pair of longitudinally spaced apart heads, one of which is longitudinally slidable on the mandrel, and a tubular radially expandable packer element interposed between the heads. Fluid communication is provided between the radially outer side of the said port and a fluid reception chamber. The packer body is operatively associated with the chamber and responsive to fluid pressure therein to radially extend the packer element.