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. 12, 2002
Filed:
Jun. 29, 1999
Applicant:
Inventor:
Davide Trevisani, Cesena, IT;
Assignee:
Trevi-S.p.A., Cesena, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F 3/08 ;
U.S. Cl.
CPC ...
E02F 3/08 ;
Abstract
A trench rig ( ) for excavating continuous monolithic brattices or bases, presenting a self-propelled crawler truck ( ), a chain-driven excavating tool ( ) provided with a central column ( ) which extends along a working axis (A), and a control unit ( ) for the column ( ) presenting a fixed gripper ( ) in relation to the truck ( ) and a mobile gripper ( ) in relation to the fixed gripper ( ) itself; the two grippers ( ) are slidingly coupled to the column ( ), and can be selectively engaged to the column ( ) itself in order to move the tool ( ) along the working axis (A), and are connected to each other by a linear step actuator ( ).