Amusement devices: games – Surface projectile game; game element – Simulated game
Patent
1993-06-30
1994-10-04
Brown, Theatrice
Amusement devices: games
Surface projectile game; game element
Simulated game
273171, A63B 5308, A63B 6936
Patent
active
053519590
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
THIS INVENTION relates to golf clubs and, more particularly, to a weight-adjustable golf club head.
BACKGROUND OF THE INVENTION
When playing golf, it is desirable to select a golf club which has playing characteristics best suited to the shot to be played, e.g. a lofted club to lift the ball from the rough or to pitch the ball onto a green. However, having selected the correct club, the playing conditions on the day may affect the shot played; eg in wet conditions, a heavier weighted club head would produce the same resulting shot as a lighter club head in fine conditions.
The rules of golf as published by The Royal and Ancient Club of ST.Andrews are very precise on the nature of implements that are used for playing golf. Many features of a golf club may not be altered within the rules. The only characteristic of a golf club that may be altered within these rules is the weight of a golf club.
There are some known golf clubs which have attempted to incorporate a weight-adjustment means as a feature of the club either by providing replaceable inserts of different weights or a series of washers for securing to the head by eg a polygonal pin Key.
These items for weight adjustment require physical removal or addition, also the exercise is time consuming and requires care. The present invention aims to obviate, or mitigate the above disadvantages associated with the above described clubs.
SUMMARY OF THE INVENTION
According to one aspect of the present invention there is provided a golf club comprising a hollow shaft and a club head, at least a portion of which is hollow and in communication with the hollow shaft, a portion of the shaft defining a reservoir to carry a supply of fluent weight material, the head being baffled to restrict movement of weight during play and means to permit the flow of weight material into or out of the club head for changing the weight of the club head characterised in that the head of the club is formed in two sections, the baffle being provided on one of the sections.
Conveniently, the means for changing the weight of the club comprises a valve control means mounted within the shaft below the reservoir.
Preferably, the valve control means comprises a plurality of valve members provided in an off-set relationship and a switching means to alter the relative positions of the valve members to allow a measured amount of weight material selectively introduced into or removed from the head of the club.
Preferably, a locking means is provided to ensure that unauthorised weight change during play cannot take place.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying Figures in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view of a golf club according to one aspect of the present invention;
FIG. 2 is a part sectional view of an upper portion of the golf club of FIG. 1;
FIG. 3 is an exploded view of the club head of FIG. 1
FIG. 4 is a plan view of the base of the club head of FIG. 3;
FIG. 5 is an underneath view of the club head of FIG. 3, and
FIGS. 6-9 are views of the control valve means of the club of FIG. 1;
FIG. 10 is a cross-section of the upper portion of a club according to one aspect of the present invention in an un-locked condition, and
FIG. 11 is a cross-section of the upper portion of the club of FIG. 10 in a locked condition.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings, a golf club according to one aspect of the invention comprises a hollow shaft 1 having a hollow head 2 mounted thereon. The head 2 my be mounted on the shaft 1 by any suitable means, via the neck or socket 2a of the head.
FIG. 2 shows a part sectional view of an upper portion of the hollow shaft 1 of the club. A rod 3 extends axially within the upper portion 1a of the shaft 1. The upper end of the rod 3 has a square cross section and a threaded bore 4 which extends axially through the upper end of the rod. A stopper 5 is mounted in the upper end of the rod 3.
The stopper
REFERENCES:
patent: 1894841 (1933-01-01), Adams
patent: 2432450 (1947-12-01), Sears
patent: 3037775 (1962-06-01), Busch
patent: 3516673 (1970-06-01), Estes
patent: 3993314 (1976-11-01), Harrington
patent: 4541631 (1985-09-01), Sasse
patent: 4715606 (1987-12-01), Varley
patent: 5082279 (1992-01-01), Hull
Brown Theatrice
Passaniti Sebastiano
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