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. 18, 2008
Filed:
Mar. 25, 2005
Applicant:
James Louis, Chicago, IL (US);
Inventor:
James Louis, Chicago, IL (US);
Assignee:
Gas Technology Institute, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61B 13/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for transporting a payload along the inside of a substantially horizontal pipe. The apparatus includes vertically aligned upper and lower roller elements which are relationally pivotably connected to each other, both of which contact the inside surface of the pipe into which the apparatus is inserted. The apparatus further includes a steering pendulum which enables the apparatus to maintain a substantially vertical orientation as it is pushed or pulled through the pipe.