Golf club head
AssigneeBridgestone Sports Co., Ltd.
InventorsHideo Shimazaki, Hideo Matsunaga, Wataru Ban
Life of this patent
Estimating the term…
Abstract
This invention provides a golf club head comprising a head main body, a face plate fixed to a front surface side of the head main body to form a face surface, a cavity portion formed in the head main body and open to a face plate side, and a viscoelastic body inserted in a compressed state in a space formed by the cavity portion and the face plate. An end face on the face plate side of a circumferential wall defining the cavity portion comprises a contacting portion contacting with a rear surface of the face plate, and a non-contacting portion spaced apart from the rear surface of the face plate to form a gap communicating with the cavity portion between the non-contacting portion and the rear surface of the face plate.
Claims11
An iron type golf club head comprising:
- a head main body having a front surface side and a rear surface side;
- a face plate fixed to the front surface side of said head main body to form a face surface of said golf club head;
- a cavity portion formed in said head main body, said cavity portion open to the front surface side and closed by the rear surface side;
- and
- a viscoelastic body inserted in a compressed state in a space formed by said cavity portion,
- wherein an axial edge on the front surface of a circumferential wall defining said cavity portion comprises:
- a contacting portion that contacts a rear surface of said face plate;
- and
- a non-contacting portion spaced apart from the rear surface of said face plate to form a gap communicating with said cavity portion between said non-contacting portion and the rear surface of said face plate.
An iron type golf club head comprising:
- a head main body;
- a face plate fixed to a front surface side of said head main body to form a face surface;
- a cavity portion formed in said head main body and open to a face plate side;
- a viscoelastic body inserted in a compressed state in a space formed by said cavity portion and said face plate;
- and
- a spacer member inserted in said cavity portion on a rear surface side of said viscoelastic body,
- wherein a front surface and a rear surface of said viscoelastic body are parallel to each other,
- wherein said spacer member has a flat surface contacting with said rear surface of said viscoelastic body and presses said viscoelastic body against the face plate side, and
- wherein an end face on the face plate side of a circumferential wall defining said cavity portion comprises:
- a contacting portion contacting with a rear surface of said face plate, and
- a non-contacting portion spaced apart from the rear surface of said face plate to form a gap communicating with said cavity portion between said non-contacting portion and the rear surface of said face plate.
An iron type golf club head comprising:
- a head main body;
- a face plate fixed to a front surface side of said head main body to form a face surface;
- a cavity portion formed in said head main body and open to a face plate side;
- and
- a viscoelastic body inserted in a compressed state in a space formed by said cavity portion and said face plate,
- wherein an end face on the face plate side of a circumferential wall defining said cavity portion comprises:
- a contacting portion contacting with a rear surface of said face plate;
- and
- a non-contacting portion spaced apart from the rear surface of said face plate to form a gap communicating with said cavity portion between said non-contacting portion and the rear surface of said face plate, and
- wherein said head main body comprises a second cavity portion formed on a side of said cavity portion.
Dependencies are inferred from the claim text.