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. 14, 1978
Filed:
Mar. 29, 1977
Michel Orain, Conflans-Saint-Honorine, FR;
Societe Anonyme Dite: Glaenzer Spicer, Poissy, FR;
Abstract
Apparatus is described for cold forming cylindrical metal blanks into parts having a central body and radial extensions, such as universal joint spiders and constant velocity universal joint tripod members. Die sectors of shortened axial height in their radial forming and extrusion zone are mounted for quick fastening and release, for example by dovetail connections to die carriers which are in turn mounted on rams displaceable along inclined converging slideways. Guide bushes are provided at the entrance to the through cavity corresponding to the central body and guide a cylindrical blank along the axes of coaxial punches fixed respectively to the plunger and column on the table for restraining plastic flow of blank metal towards the central cavity and then to the radial cavities.