Golf swing trainer

• US 7,618,328 B2
• Filed: 01/03/2007
• Issued: 11/17/2009
• Est. Priority Date: 12/30/2005
• Status: Active Grant

• Current Assignee: BU Technologies Incorporated
• Original Assignee: Michael D. Davenport, Roger K. Stewart
• Inventors: Davenport, Michael D., Stewart, Roger K.
• Primary Examiner(s): LEGESSE, NINI F
• Application Number:
  US11/648,604
• Publication Number:
  US 20070155525A1
• Time in Patent Office: 1,049 Days
• Field of Search: 473/256, 473/257, 473203-206, 473219-226, 473231-234, 473/266
• US Class Current: 473/257
• CPC Class Codes: A63B 15/00 Clubs for gymnastics or the like , e.g. for swinging exercises
• CPC Class Codes: A63B 15/005 with a weight movable along the longitudinal axis of the club due to centrifugal forces
• CPC Class Codes: A63B 2069/0008 for batting
• CPC Class Codes: A63B 2071/0633 without electronic means
• CPC Class Codes: A63B 2071/0694 Visual indication, e.g. Indicia
• CPC Class Codes: A63B 2102/24 Ice hockey
• CPC Class Codes: A63B 2225/09 Adjustable dimensions
• CPC Class Codes: A63B 60/04 Movable ballast means A63B15/005 takes precedence
• CPC Class Codes: A63B 69/3623 for driving A63B69/3608, A63B69/3658, A63B69/3661, A63B69/3667 and A63B69/3691 take precedence
• CPC Class Codes: A63B 69/3632 Clubs or attachments on clubs, e.g. for measuring, aligning A63B69/3614 takes precedence; clubs for swinging exercises in general A63B15/00
• CPC Class Codes: A63B 69/3635 with sound-emitting source
• CPC Class Codes: A63B 69/38 for tennis A63B61/006, A63B69/0073 and A63B69/0097 take precedence

Abstract

A practice device that can be used with or without a ball to help further develop the feel and muscle memory of a proper swing. A swing training device includes a handle, a shaft and a weight slidably mounted along the shaft. During the swinging of the club, the weight slides from an end near the user'"'"'s hands to a distal end away from the user. When the weight reaches the distal end, the weight contacts a stop creating an audible “snap,” giving the user both tactile and audible feedback to the success of the swing. The weight preferably includes a friction adjustment device to control the amount of static and/or dynamic friction between the sliding weight and the shaft. The shaft preferably has a constant cross-sectional area or diameter to provide a set amount of friction during the travel of the weight along the shaft.

Claims

1. A swing training device comprising:

a shaft having an upper end and a lower end;

a grip provided at said upper end of said shaft;

a weight member slidably mounted on said shaft for sliding the weight along the shaft during rotational swinging of the swing training device;

an upper stop on said shaft, said upper stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said upper end;

a lower stop on said shaft, said lower stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said lower end; and

a friction adjustment member provided on said weight member for altering an amount of dynamic friction between said shaft and said weight member;

said shaft having a substantially constant cross section along a substantial portion of its length between said upper stop and said lower stop to provide a substantially constant amount of dynamic friction between said weight member and said shaft;

wherein the shaft and the weight member are configured such that the amount of dynamic friction between said weight member and said shaft is sufficient along the shaft between the upper stop and the lower stop such that the weight slides along the shaft the weight and stops before striking the lower stop when an insufficient swing speed is applied to the swing trainer and such that the weight slides along the shaft and strikes the lower stop when a sufficient swing speed is applied to the swing trainer.

2. The swing training device of claim 1, wherein said shaft has a substantially constant cross section between the upper end and the lower end of the shaft.

3. The swing training device of claim 1, wherein said shaft is cylindrical and has a substantially constant cross section along its entire length between said upper stop and said lower stop.

4. The swing training device of claim 1, wherein said shaft is cylindrical and has a substantially constant cross diameter along a substantial portion of its length between said upper stop and said lower stop.

5. The swing training device of claim 1, wherein said shaft is cylindrical and has a substantially constant cross section along a substantial portion of its length between said upper stop and said lower stop, and where said shaft has a larger diameter at said grip than the shaft diameter between said upper and lower stops.

6. The swing training device of claim 1, wherein friction adjustment member includes a threaded compression member selectively compressing at least one rubber grommet about said shaft.

7. The swing training device of claim 1, wherein said weight member comprises a hollow housing, and said frictional adjustment member includes at least one elastomeric member variably compressed against said shaft to vary the amount of dynamic friction between said weight member and said shaft.

8. The swing trainer device of claim 7, further comprising indicia on housing of the frictional adjustment member indicating the amount of resistance on the shaft from the weight member.

9. The swing training device of claim 7, wherein said at least one elastomeric member is a plurality rubber grommets mounted coaxially with said shaft.

10. The swing training device of claim 7, wherein said at least one elastomeric member is a plurality of silicone grommets encircling said shaft.

11. The swing training device of claim 1, wherein said adjustable friction member comprises at least one selectively, variably tensioned bearing pressing against said shaft.

12. The swing training device of claim 11, wherein a threaded member adjusts the tension of said bearing against said shaft.

13. The swing training device of claim 1, wherein said adjustable friction member comprises a plurality of elastomeric members selectively compressed against each other.

14. The swing training device of claim 1, wherein said upper stop is located between said weight and said grip to prevent said weight from striking said grip.

15. The swing training device of claim 1, wherein said lower stop is located between said weight and a ball striking surface.

16. The swing training device of claim 1, wherein said lower stop consists of a shape selected from a cylinder, a sphere, a disk or a plate.

17. The swing training device of claim 1, wherein a housing on said frictional adjustment member includes a scale for indicating a maximum rotation velocity in which the swing training device must be swung to cause the weight to slide along the shaft and strike the lower stop.

18. The swing training device of claim 1, wherein on said frictional adjustment member includes a scale for indicating a maximum rotation velocity in which the swing training device must be swung to cause the weight to slide along the shaft and strike the lower stop for a current amount of compression of the variable compressed elastomeric member.

19. A method for providing audible feedback for a swing of a user, comprising:

providing a swing training device having a shaft having an upper end and a lower end;

providing a user grip on an said upper end of said shaft;

providing a weight member slidably mounted on said shaft;

providing an upper stop on said shaft, said upper stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said upper end;

providing a lower stop on said shaft, said lower stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said lower end;

providing a friction adjustment member on said weight member for altering the amount of dynamic friction between said shaft and said weight member; and

selectively adjusting the pressure of said friction adjustment member on said shaft to vary the amount of dynamic friction between said weight member and said shaft such that when the swing training is device is swung by the user at a preferred rotational velocity, the weight will slide along said shaft and strike said lower stop to provide audible feedback of a successful swing and such that when the swing training device is swung at less than the preferred maximum rotational velocity, the weight will slide along said shaft and stop prior to striking said lower stop;

swinging the swing training device and determining a location where the audible feedback occurred in the swing;

adjusting an aspect of the swing based on the location where the audible feedback occurred in the swing to change the location of audible feedback in a subsequent swing.

20. A method of practicing timing of a swing using a training device consisting of:

providing a shaft having an upper end and a lower end;

providing a user grip on an said upper end of said shaft;

providing a weight member slidably mounted on said shaft;

providing an upper stop on said shaft for preventing said weight from sliding on said shaft past said upper end;

providing a lower stop on said shaft for preventing said weight from sliding on said shaft past said lower end, wherein said shaft has substantially a constant diameter between said upper stop and said lower stop;

providing a friction adjustment member on said weight member for altering the amount of dynamic friction between said shaft and said weight member; and

selectively adjusting the pressure of said friction adjustment member on said shaft to vary the amount of dynamic friction between said weight member and said shaft, such that at the desired swing speed, the weight member slides along a portion of said shaft and strikes said lower stop to provide audible indication of correct swing speed and such that when the swing training device is swung at less than the preferred maximum rotational velocity, the weight will slide along a portion of said shaft and stop prior to striking said lower stop to provide an indication that the swing training device was swung at a speed less than the correct swing speed;

swinging said shaft at a speed sufficient to slide said weight member along at least a portion of said shaft to determine whether the swing speed was sufficient to cause the weight to strike said lower stop.

21. The method of claim 20, further consisting of:

providing an adjustable indicator which moves when said friction adjustment member is moved to indicate the maximum rotational velocity of the swing trainer necessary to cause the weight member to impact the lower stop for a current amount of dynamic friction between said shaft and said weight member.

22. A method of practicing timing of a swing using a training device consisting of:

providing a shaft having an upper end and a lower end;

providing a user grip on an said upper end of said shaft;

providing a weight member slidably mounted on said shaft;

providing an upper stop on said shaft for preventing said weight from sliding on said shaft past said upper end;

providing a lower stop on said shaft for preventing said weight from sliding on said shaft past said lower end, wherein said shaft has substantially a constant diameter between said upper stop and said lower stop;

providing a friction adjustment member on said weight member for altering the amount of dynamic friction between said shaft and said weight member; and

selectively adjusting the pressure of sad friction adjustment member on said shaft to vary the amount of dynamic friction between said weight member and said shaft, such that at the desired swing speed, the weight member slides along said shaft and strikes said lower stop to provide audible indication of correct swing speed; and

swinging said shaft at a speed sufficient to slide said weight member along said shaft to cause said weight to strike said lower stop;

wherein said friction adjustment member includes a first housing for containing a frictional member trapped between said first housing and said shaft for providing frictional resistance between said weight member and said shaft;

providing an end cap threadedly attached to said first housing for selectively enclosing said frictional member within said housing and to selectively compress said frictional member in said housing to selectively alter the amount of friction between said weight member and said shaft;

providing a first indicia on a wall of said first housing and a second indicia on said threaded end cap, whereby when said end cap is threaded onto the first housing, the first and second indicia rotate relative to each other to indicate the relative amount of friction between said weight member and said shaft.

23. The method of claim 22, wherein the relative position of said first indicia with said second indicia indicates the rotational speed of the training device necessary to cause the weight member to slide along the shaft and strike the lower stop.

24. A swing training device comprising:

a shaft having an upper end and a lower end;

a grip provided at said upper end of said shaft;

a weight member slidably mounted on said shaft for sliding the weight along the shaft during rotational swinging of the swing training device;

an upper stop on said shaft, said upper stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said upper end;

a lower stop on said shaft, said lower stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said lower end; and

a friction adjustment member provided on said weight member for altering an amount of dynamic friction between said shaft and said weight member;

said shaft having a substantially constant cross section along a substantial portion of its length between said upper stop and said lower stop to provide a substantially constant amount of dynamic friction between said weight member and said shaft;

wherein said shaft and weight member are configured such that the weight member occupies;

a first position on said shaft near said upper stop for positioning the weight member prior to swinging the swing training device;

a second position on said shaft at said lower stop where said weight member will slide from said first position to strike the end plate when said swing training device is swung at a proper swing speed; and

an intermediate position on said shaft between said first and second position where said weight member will slide from said first position and stop prior to striking said end plate when said swing training device is swung at less than a proper swing speed.