Invention Grant
- Patent Title: Golf shaft
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Application No.: US16321289Application Date: 2018-05-17
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Publication No.: US10974110B2Publication Date: 2021-04-13
- Inventor: Kosuke Fujiwara , Akihisa Inoue
- Applicant: NHK Spring Co., Ltd.
- Applicant Address: JP Yokohama
- Assignee: NHK Spring Co., Ltd.
- Current Assignee: NHK Spring Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Norris McLaughlin, P.A.
- Priority: JPJP2017-123343 20170623
- International Application: PCT/JP2018/019201 WO 20180517
- International Announcement: WO2018/235475 WO 20181227
- Main IPC: A63B53/10
- IPC: A63B53/10 ; A63B53/12 ; C09J1/00 ; C09J163/00 ; C08K3/04 ; C08K5/00 ; C08K5/17

Abstract:
Provided is a golf shaft comprising an element tube made of steel, a plating layer formed on an outer periphery of the element tube, an outer layer covering the plating layer, an adhesive layer interposed between the plating layer and the outer layer to bond between the plating layer and the outer layer. The outer layer is formed of a fiber reinforced plastic having a matrix resin that is an epoxy resin, and the adhesive layer is an epoxy resin composition or a carbon nano tube resin composition, the epoxy resin composition comprising an epoxy resin and a mixed curing agent in which two or more kinds of amine-based curing agents are mixed, and the carbon nano tube resin composition comprising an epoxy resin and at least one kind of curing agents as well as dispersed carbon nano tubes.
Information query