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. 01, 1989
Filed:
Jun. 29, 1988
Applicant:
Inventors:
Bernard Haldric, Vendome, FR;
Pascal Feucht, Amboise, FR;
Assignee:
NACAM, Vendome, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B21D / ; B21D / ;
U.S. Cl.
CPC ...
72402 ; 72398 ; 72393 ; 72370 ;
Abstract
A shaping device for corrugating a tube includes at least one mandrel which is radially expansible and has a body associated with at least one relatively resilient arm which carries on its surface an impression whose profile corresponds to the profile of the corrugation to be obtained, and an axially movable locking member for causing the mandrel to move from a retracted position to an outer position in which the locking member immobilizes the mandrel, and hammers. The hammers, the tube and the mandrel-locking member are adapted to be subjected to relative rotations about their common longitudinal axis.