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. 17, 1992
Filed:
Sep. 28, 1990
Andrew J Lee, Hopkinsville, KY (US);
Ebonite International Inc., Hopkinsville, KY (US);
Abstract
A balanced bowling ball having a core and a shell, and including a counterweight nugget positioned intermediate the bowling ball thumb and finger grip holes. The counterweight nugget comprises a non-metallic material, including refractory tungsten carbide suspended in a matrix of thermoplastic binder, having a density at least an order or magnitude greater than the density of the shell and core materials. The counterweight nugget is disposed within a depression on the core in one embodiment and in a depression in the shell in another embodiment. Alternative methods of manufacturing each embodiment and the material forming the counterweight nugget are also disclosed.