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:
Dec. 10, 1991
Filed:
Sep. 12, 1990
Applicant:
Inventors:
Gerd Riedel, Munich, DE;
Gottfried Lutz, Seefeld, DE;
Rudolf Breuer, Munich, DE;
Franz Gumplinger, Rottenburg, DE;
Assignee:
Agfa Gevaert Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425130 ; 2643287 ; 2643288 ; 425577 ; 425D / ;
Abstract
In an injection moulding tool for the production of a magnetic tape cassette casing constructed, in part, in two layers the apparatus has a fixed core (1a) provided, on the rim, with a projection (5) which provides a sealing strip relative to the moving core (2a). After the injection moulding process into the first mould cavity (4), the moving core (2a) is moved axially downwards by about half the wall thickness, whereupon the second mould cavity (3, 3') is filled by injection through a second needle shut-off nozzle (FIG. 1b).