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. 20, 2001
Filed:
May. 11, 1999
Applicant:
Inventors:
Assignee:
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29C 4/536 ;
U.S. Cl.
CPC ...
B29C 4/536 ;
Abstract
A process for producing closed or open hollow parts of molded synthetic resin material in which a core (,) or mold body which extends into the mold cavity and is attached to a form element and supported on other form elements is situated between two mold half-shells. The core is supported by one or more movable stops (,) which can be retracted from the mold cavity. Plastic is injected into the mold via a first injection channel (,) with the core retained in position by the stops (,). Subsequently the retaining stops (,) are retracted and the mold cavity is completely filled via a second injection channel (,).