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:
Feb. 25, 2003
Filed:
Aug. 24, 2001
Robert Ward Carter, San Francisco, CA (US);
Robert Williams Carter, Oakland, CA (US);
WRB Company, Inc., Oakland, CA (US);
Abstract
A trenchless pipe replacement device including a pipe parting mole, a length of cable that is engagable to the mole, a cable pulling device and a cable pulling device engagement device that provides a mounting structure for the cable pulling device. The cable pulling device includes a reciprocating cable engagement mechanism that grips the cable on a pulling stroke and holds the cable on a recovery stroke. The cable pulling device engagement device generally includes a reaction plate and a structure for removably engaging the cable pulling device therewithin. A cable pulling frame may be used to facilitate the removal of the cable from a relatively small hole that is created at the pulling end of the pipe.