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US 7,125,343 B2Granted
Iron golf club head
AssigneeBridgestone Sports Co., Ltd.
InventorYasunori Imamoto
Life of this patent
Estimating the term…
Abstract
A recess portion is provided on a rear face of a head main body. A resin layer is bonded between ribs, of an innermost face. After an element assembly of the resin layer, an element assembly of the FRP body and a balloon are inserted into the recess portion, the iron golf club head is mounted in a mold, and a gas such as air is supplied into the balloon through an air opening inserted into an opening.
Claims10
An iron golf club head comprising:
- a main body provided with a recess portion behind a face portion;
- an FRP body provided in the recess portion;
- and
- an opening provided in a side wall at a toe portion or a back portion of the golf club head, wherein
- the FRP body has a hollow shape that is substantially enclosed, and is balloon molded in the recess portion, and
- the opening is closed with a lid member.
3 more elements
Dependencies are inferred from the claim text.