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. 31, 1981
Filed:
Dec. 03, 1979
Applicant:
Inventor:
Walter T Murphy, Cuyahoga Falls, OH (US);
Assignee:
The B. F. Goodrich Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ; B28C / ;
U.S. Cl.
CPC ...
273 / ; 2915 / ; 264257 ; 264258 ; 264310 ; 264311 ; 273 / ; 273 / ; 428 35 ;
Abstract
A process is provided for making reinforced rubbery sport and play balls by rotational casting, in a mold lined with a nonwoven fabric, a liquid polymer composition containing an epoxy resin, a liquid carboxyl-terminated polymer, an amine, a dihydric compound, and a plasticizer. The sections of nonwoven fabric in the mold are preshrunk and sealed together by means of an amine-terminated liquid polymer. The resultant sport and play balls have good dimensional stability and the desired flex and tear properties.