Games using tangible projectile – Golf – Practice device attachable to body
Patent
1995-10-18
1997-09-16
Marlo, George J.
Games using tangible projectile
Golf
Practice device attachable to body
473409, A63B 6936
Patent
active
056674473
DESCRIPTION:
BRIEF SUMMARY
This invention relates to movement sensing device which has particular, but not exclusive utility in a golf swing aid apparatus, and to a golf swing aid apparatus per se.
One of the most difficult actions for the human body to perfect, and maintain perfection of, is the swinging action of the arms required for swinging a golf club in the game of golf. Although the basic object of the game of golf is relatively simple, ie. hitting a ball with a club into a hole, the technique of properly executing a golf swing is a most difficult action to perfect due to the need to combine two opposing factors, one being power (and hence speed) and the other being precision.
It is considered by many golfing professionals that the most common faults that occur in a golf swing are a failure to keep the upper portion of the leading arm close to the torso and bending of the leading elbow during the stroke.
Accordingly, it is an object of one aspect of the present invention to provide an apparatus which warns the golfer in a simple and convenient way, of the failure to keep the upper portion of the leading arm close to the body, or additionally, of bending of the elbow of the leading arm during the golf stroke.
Indeed, as a consequence of the development of the invention as a golf swing aid, it has been determined that aspects of the invention have quite separate and broader definition, than simply as a golf swing aid, having utility in the areas of physiology, mechanical engineering and the like.
Accordingly, it is a broad object of the invention to provide a movement sensing device of a form which is able to sense angular movement of a limb relative to a body to which the limb is hingedly attached.
In accordance with one aspect of the present invention, there is provided a movement sensing device for sensing angular movement of a limb relative to a body to which it is attached comprising: the limb; body whilst the limb is disposed at a prescribed angular position relative to the body; and sensing a prescribed loss of contact between said contact means and the body.
Wherein, said contact means is elongated and is adapted for positioning such that the longitudinal extent thereof is disposed transversely of the limb to maintain contact with the body throughout a range of angular movement of the limb adjacent to and across the body, whilst maintaining the relative angular displacement between the limb and the body, and to mitigate contact with the body in response to the limb moving away from the body increasing the relative angular displacement between the limb and the body.
In the case of a prescribed degree of such movement away from the body, contact between the contact means and the body is lost.
Preferably said contact means is adapted to provide for a differential change in contact relative to the degree of movement of the limb away from the body, and wherein said prescribed loss of contact corresponds to a prescribed degree of said movement.
Preferably, where the limb is articulated about a joint, the movement sensing device includes a flexure sensing device for the limb comprising: limb, one part of said support means being adapted for attaching to one side of the joint and the other of said pair to the other side of the joint; support means, said further sensing means being capable of expanding from a first position in response to flexure of the limb to and beyond a second position and contracting back to said first position in response to straightening of the limb; and predetermined expansion of said sensing means to said second position.
Preferably, said further sensing means comprises: an actuating arm connected at one end to said one part of said further support means; a resilient arm connected at one end to said other part of said further support means, the other ends of said actuating arm and said resilient arm being interconnected; and electrical contact means associated with said actuating arm; wherein said electrical contact means are open when said further sensing means, actuating arm and resilient member is d
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Enterprise, "Innovations, A Market Place for Innovative Products, Ideas and Investments", vol. 4, No. 3, p. 60.
Aslett Anthony John
Bootsma Nicholas
Perham George James
Aslett Anthony John
Marlo George J.
Perham George James
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