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. 23, 1993
Filed:
Jun. 05, 1992
Jean-Francois Seconde, Metz, FR;
Gerard Heurteboust, Roussy Le Village, FR;
Sollac, Puteaux, FR;
Abstract
The device comprises a punch (2) of frustoconical shape and a die (1). The die comprises concentric rings (8, 9, 10) movable in the direction of the displacement of the punch, and pressure means (14, 15, 16) for exerting on the rings a predetermined force in the direction toward the punch, each of the annular front surfaces (20, 21, 13) of the rings having a shape which is complementary to the annular surface (20', 21', 13') of the punch in axially facing relation thereto. According to the method of the invention for in particular manufacturing in a single stroke a container of generally frustoconical shape, concentric annular zones (32, 33, 34) of the blank are deformed in succession by commencing with that having the smallest size, each annular zone (32, 33, 34) being maintained pressed toward the punch by a corresponding ring (respectively 10, 9, 8) from the moment when the zone is in contact with the punch until the end of the drawing operation, each annular zone being moreover in bearing relation to a corresponding ring so long as the inner adjacent zone is not applied against the punch.