Golf clubhead having beryllium face plate
First Claim
Patent Images
1. A golf clubhead comprising:
- a metal head body having an open face portion;
a cavity portion in said face portion, said cavity portion having a face plate supporting wall at a bottom of said cavity portion, said face plate support wall closes said face portion; and
a face plate composed of substantially pure beryllium with a specific gravity no greater than 2 and a modulus of elasticity at least 294×
109 N/m2 is mounted in said cavity portion.
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Accused Products
Abstract
A golf clubhead is constructed such that a cavity portion having a face plate supporting wall at its bottom is provided in a face portion of a metal head body so that a face plate made of beryllium is mounted on the cavity portion. It is possible to increase the flying or driving distance of a golf ball.
51 Citations
13 Claims
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1. A golf clubhead comprising:
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a metal head body having an open face portion; a cavity portion in said face portion, said cavity portion having a face plate supporting wall at a bottom of said cavity portion, said face plate support wall closes said face portion; and a face plate composed of substantially pure beryllium with a specific gravity no greater than 2 and a modulus of elasticity at least 294×
109 N/m2 is mounted in said cavity portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A golf clubhead comprising:
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a head body having a configuration substantially resistant to deformation; a face plate supporting wall secured to a perimeter of said head body, said face plate supporting wall is congruent with and occludes said perimeter, a projection extending oppositely from said face plate supporting wall with respect to said head body, said projection coincides in shape with said perimeter; a cavity portion defined by said projection and said face plate supporting wall, said cavity portion includes a mouth circumscribed by said projection and opening oppositely from said face plate supporting wall, said mouth is at least as large as an interior junction of said projection and said face plate supporting wall; and
,a face plate composed substantially of beryllium, said face plate is congruent with and mounted in said cavity portion.
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Specification