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. 12, 1983
Filed:
Jun. 18, 1981
Applicant:
Inventors:
Hueng T Kim, Avon Lake, OH (US);
Sam D Nehmey, Lorain, OH (US);
Assignee:
The B. F. Goodrich Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B29F / ; B01F / ;
U.S. Cl.
CPC ...
264 53 ; 239551 ; 239562 ; 239566 ; 239567 ; 261D / ; 2641 / ; 264D / ; 366177 ; 4253 / ; 4258 / ;
Abstract
Extrusion apparatus and method for making a cellular resin product are characterized by a conduit that extends into the extruder whereby a blowing agent is injected therethrough into the resin through a plurality of ports provided in the conduit in order to disperse the blowing agent more uniformly through the resin before it is extruded through a die into a zone of lower pressure whereupon the blowing agent expands to form numerous cells within the resin structure.