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:
Jun. 23, 1981
Filed:
Jul. 31, 1978
Applicant:
Inventor:
Karl Mettler, Vaduz, LI;
Assignee:
Etablissement Supervis, Vaduz, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J / ;
U.S. Cl.
CPC ...
72354 ; 72358 ; 264320 ; 264D / ; 264D / ; 425352 ; 425392 ; 425394 ; 425D / ; 425D / ;
Abstract
A method for making a centrosymmetrical spider of a universal joint by extrusion molding involves pressing both end faces of a cylindrical blank the same distance towards the center of the blank to force the blank material radially outwards from the center of the cylindrical blank in a stream which is symmetrical relative to the two end faces and into a cavity of a split mold. Also disclosed is a molding apparatus for practicing the method. The apparatus includes a floating mold. One end of the apparatus can be rigidly fixed to a press for operating the punches which provide the extrusion pressure.