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:
Jul. 20, 1976
Filed:
Sep. 26, 1973
Applicant:
Inventors:
Mathew A Slaats, Jasper, IN (US);
David E Overton, Jasper, IN (US);
Assignee:
Kimball International, Inc., Jasper, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264 405 ; 264 53 ; 264101 ; 425812 ; 4258 / ;
Abstract
A method and apparatus for molding plastic materials, particularly foamed plastic materials, in which the materials are introduced into a mold cavity together with a foaming agent with the mold cavity being evacuated not later than immediately after the molding material is supplied thereto. The reduced pressure in the mold cavity causes the material to foam extremely quickly so as completely to fill the cavity while, at the same time, the mold is held closed by the pressure differential between the inside and outside thereof.