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:
Jan. 31, 1989
Filed:
Sep. 14, 1987
Applicant:
Inventors:
Peter Graczoll, Munich, DE;
Franz Gumplinger, Rottenburg, DE;
Helmut Peuke, Hohentann, DE;
Gerd Riedel, Munich, DE;
Assignee:
Agfa-Gevaert Aktiengesellschaft, Bayerwerk, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; B29F / ;
U.S. Cl.
CPC ...
228174 ; 228161 ; 228193 ; 249 78 ;
Abstract
An injection moulding tool with optimum temperature distribution as the result of an improved tempering duct system is obtained if the tool inserts (10, 11) are each made up of two or more plates, tempering ducts (12, 12', 12') are worked in from the external faces (F1, F2, F3), on which the parts are subsequently joined by the diffusion welding method. An injection moulding tool for VHS reel hubs produced by this method produces moulds for injection moulding with substantially reduced wobble and a reduced cycle time.