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. 29, 1983
Filed:
Jul. 22, 1980
Applicant:
Inventor:
Dennis Cooper, Englewood, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81444 ; 294 95 ;
Abstract
A pipe extractor tool has been devised for use in removal of broken pipe sections, such as, the riser in a sprinkler system and includes cams formed at the lower end of a hollow shank through which a push rod is inserted, the cams being movable under the urging of the push rod in a generally radially outward direction into firm gripping engagement with the inner wall of the pipe section to be removed so that a twist or torque can be applied to the tool to unthread and remove the broken pipe section.