Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2001-01-12
2002-09-03
Passaniti, Sebastiano (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S342000
Reexamination Certificate
active
06443857
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a shock-absorbing golf club head, particularly to one having a double-deck shock-absorbing layer to effectively absorb wrenching and shock force caused by hitting to achieve effective shock-absorbing, shock-lessening, and stability of ball-controlling.
Generally, when a golfer swings a golf club in striking a ball, the striking face of the golf club will give rise to a kind of wrenching and shock force, which may hurt a golfer's wrists.
In order to eliminate such drawbacks, some conventional golf club heads are integrally provided with a shock-absorbing layer for absorbing the wrench and shock force caused by hitting. U.S. Pat. No. 5,772,527 is a typical example.
In accordance with U.S. Pat. No. 5,772,527, the striking face
21
of a golf club head
2
is provided with a recess
22
having projections
23
around a front circumferential edge to be fixedly mounted with a metal face plate
25
by welding, sealing the recess
22
and forming an intermediate hollow with a slot
24
on an upper edge for injecting shock-absorbing material into the recess
22
to form a shock-absorbing layer
1
, as shown in
FIGS. 1
,
2
, and
3
.
However, the wrench and shock force of a golf club head caused by hitting takes place instantly and spreads so quickly that it can hardly be absorbed completely by the single shock-absorbing layer inside the striking face of the golf club head.
SUMMARY OF THE INVENTION
The objective of this invention is to offer a golf club head having a double layer for shock absorbing, able to effectively absorb the wrench and shock force caused by hitting, enabling a golfer to acquire stability of ball controlling.
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patent: 4027885 (1977-06-01), Rogers
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patent: 4523759 (1985-06-01), Igarashi
patent: 4664383 (1987-05-01), Aizawa
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patent: 5301941 (1994-04-01), Allen
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patent: 5425535 (1995-06-01), Gee
patent: 5492327 (1996-02-01), Biafore
patent: 5766092 (1998-06-01), Mimeur
patent: 5772527 (1998-06-01), Liu
patent: 5899821 (1999-05-01), Hsu
patent: 6042486 (2000-03-01), Gallagher
patent: 6093116 (2000-07-01), Hettinger
Passaniti Sebastiano
Pro-Techtor Inter-national Services
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