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. 13, 2001
Filed:
Mar. 23, 1998
Keiji Moriyama, Shirakawa, JP;
Hiroyuki Tsujinaka, late of Kobe, JP;
Kazuo Hochi, Amagasaki, JP;
Masaya Tsunoda, Akashi, JP;
Akihiro Nakahara, Ibaraki, JP;
Kiyoto Maruoka, Kobe, JP;
Kazuhisa Fushihara, Kakogawa, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Abstract
A hollow golf ball comprising a hollow core and a cover layer that possesses good shot feel, an increased moment of inertia, and a high launch angle at the time of hitting. Immediately after impact, the hollow golf ball has a small spin amount. The specific hollow core reduces the rate of spin dumping between the ascending and descending of the ball, which results in increased flight distance. The hollow golf ball has a hollow core and a cover layer formed on the core, wherein the hollow core is composed of a hollow portion having a diameter of 5 to 30 mm and a core outer layer portion surrounding said hollow portion.