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:
Feb. 28, 1995
Filed:
Nov. 25, 1992
Applicant:
Inventor:
Donald A Toon, Burlington, CA;
Assignee:
Solinst Canada Ltd., Glen Williams, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166187 ;
Abstract
The system prevents water flowing freely up and down an open borehole. A hose of stretch elastic rubber is inserted into the borehole and, once installed, is filled with water from the surface. The hose inflates and expands, plugging the borehole. Used with multi-level sampling apparatus, lengths of the hose plug the borehole between the sampling ports. The lengths of hose are mechanically supported between couplings by means of stiff plastic hose passing inside the hose, between the couplings.