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:
Jun. 22, 1999
Filed:
Jun. 10, 1997
Kazuto Maehara, Saitama, JP;
Toshio Chikaraishi, Saitama, JP;
Bridgestone Sports Co., Ltd, Tokyo, JP;
Abstract
There is disclosed a golf ball including a layer made of a shape memory alloy. For example, fine thread of a shape memory alloy is wound around a core so as to provide a shape memory alloy layer between the core and a cover of the golf ball. In this structure, the shape memory alloy layer provides an effect of tightening the core, thus improving the golf ball's resiliency, resulting an increased travel distance. Moreover, since the shape memory alloy layer has a high specific gravity, the moment of inertia of the golf ball increases, so that the spin and roll performances of the golf ball are improved. Furthermore, the shape memory alloy layer having higher strength and hardness functions as a reinforcement layer of the cover, thereby improving cut resistance and impact durability of the cover.