US20020160851A1

US20020160851A1 - Iron golf club for use in approach shot

Info

Publication number: US20020160851A1
Application number: US09/820,773
Authority: US
Inventors: Cheng-Chang Liao
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-30
Filing date: 2001-03-30
Publication date: 2002-10-31

Abstract

An iron golf club comprises a shaft, a grip fastened with one end of the shaft, and a head fastened with other end of the shaft. The head has a head angle ranging between 10 and 60 degrees. The shaft has a shaft angle ranging between 65 and 90 degrees. The head has a center of gravity, which is located at the center of a sole of the head.

Description

FIELD OF THE INVENTION

The present invention relates generally to a golf club, and more particularly to an iron golf club for use in the approach shot.

BACKGROUND OF THE INVENTION

The golf course is generally provided in proximity of the putting green with obstacles such as bunker pond, tall grass etc. The approach shot is intended to knock the ball onto the putting green and moving the ball toward the flag as close as possible. Certain technics such as lob, pitch and chip are applied to approach shot depending on the ball and green situation.

As shown in FIGS. 2 and 3, a conventional iron golf club has a relatively longer shaft 1, which form with the surface an angle θ₁at least smaller than 65 degrees. In the meantime, the golf club has a golf club head angle θ₂which is at least greater than 10 degrees. Such a conventional iron golf club as described above has a greater arm of force as well as a greater moment of force enabling the ball to travel farther. The greater head angle θ₂causes the ball to take off at a greater angle.

In light of the design of the shaft 1 and the shaft angle θ₁, the head 2 is separated from the body of a golfer by a greater distance and is therefore less favorable for the golfer to swing the club in the pendular manner. In the meantime, the center of gravity of the head 2 is located on the front end 3, thereby resulting in deviation of the head 2 at the time when the golf club is swung. The deviation may add up the head speed of the club and create longer distance. But on the other hand, it becomes more difficult for the club head to move linearly and hit the ball with precision.

When the ball is near the green within the distance that requires less than

\frac{1}{2}

swing, one of the ideal ways for such approach shot is

(1) keep eyes right above the ball.

(2) swing in pendular manner. (As illustrated in FIG. 1)

(3) try to keep the club head along the target line as long as possible.

With this way, it is easier to make a stable and well-controlled approach shot. But conventional iron club is not suitable for this way of approach shot.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide an iron golf club for use in approach shot.

In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by the iron golf club comprising a shaft, a grip, and a head. The grip is fastened with one end of the shaft. The head is fastened with other end of the shaft. The head angle ranges between 10 and 60 degrees, whereas the shaft angle ranges between 65 and 90 degrees. The center of gravity of the head is located at the center of the sole of the head.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a schematic view of the pendular mode of swinging a golf club. [0013]
FIG. 2 shows a side view of an iron golf club of the prior art. [0014]
FIG. 3 shows a partial enlarged view of the iron golf club of the prior art as shown in FIG. 2. [0015]
FIG. 4 shows an exploded view of a preferred embodiment of the present invention. [0016]
FIG. 5 shows a perspective view of the preferred embodiment of the present invention. [0017]
FIG. 6 shows a partial enlarged view of the preferred embodiment of the present invention. [0018]
FIG. 7 shows a side view of the preferred embodiment of the present invention.[0019]

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 4, an [0020] iron golf club 10 embodied in the present invention comprises a shaft 11, a grip 12, and a head 13.
The [0021] grip 12 is fastened with one end of the shaft 11 and is provided with an arcuate back portion to facilitate the swinging of the golf club 10 is the pendular manner.
As shown in FIG. 5, the [0022] head 13 is made of metal by precision casting and is formed of a main body 131 and a connection portion 132. The main body 131 is provided with a ball-hitting face 133 and a sole 134. The connection portion 132 is extended from one end of the main body 131 for connecting the shaft 11. As shown in FIGS. 6 and 7, the sole 134 of the head 13 is rested on the ground surface such that the ball-hitting face 133 and an imaginary extension line A form a head angle θ₃, as shown in FIG. 6, which is of 40 degrees. Now referring to FIG. 7, the shaft 11 and the ground surface form a shaft angle θ₄of 80 degrees or so.
The [0023] shaft 11 has a length of 34 inches or so, which is shorter than the shaft of the conventional iron golf club. The shaft angle θ₄of 80 degrees is greater than the shaft angle of the conventional iron golf club. In light of the design of the shaft 11 and the design of the shaft angle θ₄, the golf club 10 is suitable for use in hitting the ball in the pendular manner such that the head 13 is located right under the eyesight of a golfer holding the grip 12, and that the golf club 10 is swung to and fro in the pendular manner so as to enable the head 13 to move linearly to hit the ball with precision. In view of the head angle θ₃being 40, the ball takes off at a greater angle. The center of the gravity of the head 13 is located at the center of the sole of the head 13, thereby preventing the head 13 from being deviated to enable the ball-hitting face 133 to hit the ball without fault. As a result, a better ball controllability is achieved.

Claims

What is claimed is:

1. An iron golf club for approach shot, comprising:

a shaft;

a grip fastened with one end of said shaft; and

a head fastened with other end of said shaft such that said head has a head angle ranging between 10 and 60 degrees, and that said shaft has a shaft angle ranging between 65 and 90 degrees, and further that the center of gravity of said head is located at the center of a sole of said head.

2. The iron golf club as defined in claim 1, wherein said grip has an arcuate back portion to facilitate the swinging of said iron golf club in a pendular manner.

3. The iron golf club as defined in claim 1, wherein said shaft has a length of 34 inches.