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. 11, 2001
Filed:
Feb. 03, 2000
Applicant:
Inventor:
John Howard Parent, Brampton, CA;
Assignee:
Solinst Canada Limited, Georgetown, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/3127 ;
U.S. Cl.
CPC ...
E21B 3/3127 ;
Abstract
The packer includes the usual outer bladder, which is inflated against the sides of the borehole, to seal around a work-pipe. But the packer also includes an inner bladder. The packer is mechanically secured to the work-pipe by the grip of the inner bladder around the work-pipe. The inner bladder is sucked outwards by a vacuum pump, to enable the packer to be moved along the work-pipe. The same port through which vacuum was admitted to the inner bladder can then be used to admit pressurized fluid to the outer bladder.