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:
Nov. 09, 1999
Filed:
Feb. 24, 1997
Applicant:
Inventor:
Franz-Josef Puttman, Lennestadt, DE;
Assignee:
Tracto-Technik Paul Schmidt Spezialmaschinen, Lennenstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
405184 ; 175 22 ;
Abstract
The invention pertains to a machine for producing or widening ground bores and/or for shattering old pipelines and laying new pipelines, consisting of a push-pull unit and a rod assembly that is connected to and driven by the push-pull unit and extends through the ground bore or the pipeline, with projections and/or recesses being arranged on the rod assembly, and with positive coupling means that engage on the projections or in the recesses arranged on the push-pull unit.