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:
Jan. 25, 1983
Filed:
Oct. 20, 1980
Applicant:
Inventor:
Anthony C Richardson, Agincourt, CA;
Assignee:
Transcanada Pipelines Ltd., Scarborough, CA;
Primary Examiner:
Int. Cl.
CPC ...
B61B / ;
U.S. Cl.
CPC ...
1041 / ;
Abstract
A pipeline crawler comprises a wheeled power unit and a tractor unit having a plurality of driven wheels for engagement with the interior wall of a pipeline. A flexible power transmission extends from the power unit to the tractor unit for driving the driven wheels and includes a relational connection to permit rotary movement of the tractor unit relative to the power unit.