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. 14, 1989
Filed:
Nov. 23, 1987
Applicant:
Inventors:
Jean M Brysbaert, Bourbourg, FR;
Alain Vautrain, Esquelbecq, FR;
Assignee:
Usinor Aciers, Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
B21B / ; B21B / ;
U.S. Cl.
CPC ...
72202 ; 72342 ;
Abstract
The tunnel comprises a rigid metal framework (3), a U-shaped covering unit (5) and a raising means (12) for shifting the framework and the covering unit between a service position and an out of service position (3', 5'). The framework (3) includes parallel cross-members (10) and the covering unit is constituted by a smooth metal sheet covered with an insulation material. The covering unit (5) is connected under the metal framework (3) in the region of each of the cross-members (10) by a plurality of articulated suspension means (6).