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:
Nov. 25, 1980
Filed:
May. 11, 1979
Applicant:
Inventors:
Lawrence A Denny, Orange, CA (US);
James E Aswell, Houston, TX (US);
Assignee:
Den-Con Tool Company, Orange, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
294 96 ; 294 8625 ;
Abstract
An apparatus for insertion into the interior of large diameter pipe or tubing which engages inner portions of the pipe so that the pipe may be lifted and moved. Slip assemblies are wedged into engagement with inner portions of the pipe. The amount of wedging may be varied with a hydraulic cylinder or other suitable power source. Pipe guide members are provided to insure centering of the apparatus within the pipe.
Denny, Lawrence. (1980). Pipe handling apparatus (U.S. Patent No. 4235469). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4235469
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile