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. 26, 1978
Filed:
May. 07, 1976
Applicant:
Inventors:
John A Lovell, Monroe Falls, OH (US);
Donald V Hillegass, Alliance, OH (US);
Philip G Harris, Clemson, SC (US);
Assignee:
The Goodyear Tire & Rubber Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29G / ;
U.S. Cl.
CPC ...
264571 ; 264102 ; 264225 ; 264337 ; 264338 ; 264D / ;
Abstract
Method of preparing polyurethane composite mold by injecting a composite reaction mixture onto a master form in a mold cavity, curing said reaction composite and removing it from the master form in a step-wise process involving a pressure manipulation. Said composite comprises 100 parts by weight inorganic water insoluble inert granular material and about 50 to about 200 parts by weight liquid polyurethane reaction mixture substantially free of volatile solvents.