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:
Aug. 05, 1997
Filed:
Nov. 10, 1994
Applicant:
Inventors:
Nicholas Jason Preston, Warrington, GB;
Graham Arthur Austin, Burnley, GB;
Assignee:
North West Water Group PLC, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
405154 ; 294 8625 ;
Abstract
Apparatus for removing piping from the ground comprises a cable (1) which has pipe engaging means (2) disposed along its length. The pipe engaging means (2) are arranged such that the cable (1) is insertable into a pipe (3) in one direction but that attempted withdrawal of the cable (1) in the opposite direction relative to the pipe (3) causes the pipe engaging means (2) to jam the cable (1) in the pipe (3). The pipe (3) can then be pulled from the ground, the pulling force being distributed along the length of the pipe (3).