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:
Aug. 22, 2000
Filed:
Dec. 23, 1997
Kiyoto Maruoka, Kobe, JP;
Akihiro Nakahara, Ibaragi, JP;
Kazuo Hochi, Amagasaki, JP;
Kazuhisa Fushihara, Kakogawa, JP;
Yutaka Yoshida, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Abstract
The present invention provides a method for the production of a hollow golf ball, which has a perfect spherical hollow portion and possesses excellent durability and good shot feel at the time of hitting, without adversely affecting a good rebound performance. The present invention provides a method for producing a hollow golf ball comprising a hollow core (5) having a hollow center (2) and a hollow portion (1) and, optionally, at least one intermediate core layer (3) formed on the hollow center (2), and a cover (4) formed on the hollow core (5), wherein the step of producing the hollow center (2) comprises: