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. 23, 2010
Filed:
Sep. 21, 2006
Larry Bowar, Belgrade, MT (US);
Daniel Schall, Bozeman, MT (US);
Gregory L. Schleining, Bozeman, MT (US);
Larry Bowar, Belgrade, MT (US);
Daniel Schall, Bozeman, MT (US);
Gregory L. Schleining, Bozeman, MT (US);
Other;
Abstract
An apparatus for installing a pipeline slipliner, by pushing rather than drawing the slipliner into the host pipe. The gripper assembly is mounted on the boom of an earthworking machine or other vehicle, such as a track excavator. The gripper assembly includes gripper tracks that engage the exterior of the slipliner and advance it in a linear fashion. The gripper assembly is lowered on a boom into a excavation so as to level with the opening of the host pipe. The gripper assembly is then operated to advance the slipliner into the host pipe, with the slipliner being feed down to the gripper assembly on the surface of the excavation. The gripper assembly resiliently compresses the slipliner to establish a grip that enables it to push the slipliner great distances into the host pipe.