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:
Jun. 26, 2012
Filed:
Sep. 30, 2009
James Louis, Chicago, IL (US);
James Louis, Chicago, IL (US);
Gas Technology Institute, Des Plaines, IL (US);
Abstract
An apparatus for transporting a payload along the inside of a substantially horizontal pipe, which apparatus includes a pair of spaced apart, vertically aligned, relationally pivotably connected, rollable pipe tracking contactors, wherein pivoting of one of the pipe tracking contactors in a first direction results in pivoting of the other pipe tracking contactor in a direction opposite to the first direction. The apparatus further includes a control system which is used to maintain the vertical alignment of the pipe tracking contactors and which includes a two-dimensional tilt sensor that provides information to a controller regarding the orientation of the apparatus. Using the information from the sensor, the controller is able to correct both the lateral position and the speed of the contactors to bring the apparatus back into vertical alignment.