User-friendly golf swing practice mat

• US 5,803,826 A
• Filed: 08/06/1996
• Issued: 09/08/1998
• Est. Priority Date: 02/28/1995
• Status: Expired due to Term

• Current Assignee: James J. Perrine
• Original Assignee: James J. Perrine
• Inventors: Perrine, James J.
• Primary Examiner(s): Harrison, Jessica
• Application Number:
  US08/689,241
• Time in Patent Office: 763 Days
• Field of Search: 473/278, 473/279, 473/150, 473/257, 473/262
• US Class Current: 473/278
• CPC Class Codes: A63B 69/3661 Mats for golf practice, e.g. mats having a simulated turf, a practice tee or a green area

Abstract

A user-friendly golf swing practice mat is provided, comprising: (a) a low friction, compliant and resilient top sheet having a rigidity of less than 40 pounds per square inch; and (b) a bottom pad (natural grass or an accompanying compliant, resilient pad) for supporting the top sheet a finite distance above the underlying base, for providing space for the top sheet to yield to and accommodate the bottom-most portion of a reasonably well-aligned golf club swing-arc. The golf swing practice mat avoids the mechanical limitations and problems associated with prior art mats. In typical usage, the respective properties of the top sheet and the bottom pad together enable the whole mat to function so that--like a natural-grass-covered fairway--it imposes very little resistance as it readily yields to and accommodates the bottom-most portion--between the bottom of the ball and the underlying ground/base--of any fill, and reasonably well aligned golf club swing arc. Golf clubs that are swung through arcs which hit down before one'"'"'s stance and rotation center, and would otherwise tend to dig into a natural earth base, or a typical practice-range mat, impact relatively softly and slide forward without appreciable loss of momentum, and allow the golfer to complete the somewhat mis-aligned swing-arc without discomfort and deterrence to future efforts.

Claims

1. A golf swing practice mat for placement on an underlying base to aid a golfer in improving his or her swing of a golf club having a club head, said swing comprising a swing-arc having a bottom-most portion thereof, said golf swing practice mat comprising:

(a) a low friction, flexible and resilient top sheet that is directly contacted by said club head during said swing and has a rigidity of 40 pounds per square inch or less; and

(b) a means for supporting said top sheet a finite distance above said underlying base and for providing space for said top sheet to yield to and accommodate said bottom-most portion of a reasonably well-aligned golf club swing-arc, such that said mat has a aggregate, total rigidity of 40 pounds per square inch or less.

2. The golf swing practice mat of claim 1, wherein said means comprises natural grass covering a ground base.

3. The golf swing practice mat of claim 1, wherein said means comprises an accompanying, compliant, resilient pad.

4. The golf swing practice mat of claim 3, wherein said top sheet is thermally or adhesively bonded to said accompanying pad.

5. The golf swing practice mat of claim 1, wherein said top sheet includes at least one of the following markings thereon:

(a) the intended flight line/track of a ball;

(b) the proper placement--front to back in the horizontal plane--of the user'"'"'s stance center at address;

(c) specific ball positions--front to back in the horizontal plane; and

(d) specific, incremental stance widths.

6. The golf swing practice mat of claim 1, wherein said top sheet comprises a semi- to fully-transparent material so that markings placed on its underside show through to a user.

7. The golf swing practice mat of claim 1, wherein said top sheet has one or more shallow dimples formed in its top surface to facilitate the placement of a golf ball thereon.

8. The golf swing practice mat of claim 1, wherein the top surface of said top sheet is smooth, non-porous and suited to the application of a visible substance that registers the path of golf club head passing through the actual or represented hitting area when the club head is in contact with the mat near the bottom-most point in its swing-arc.

9. A golf swing practice mat for placement on an underlying base to aid a golfer in improving his or her swing of a golf club having a club head, said swing comprising a swing-arc having a bottom-most portion thereof, said golf swing practice mat comprising:

(a) a flexible, resilient top sheet that is directly contacted by said club head during said swing and has a substantially smooth, low friction top surface, and a flexural rigidity of 40 pounds per square inch or less; and

(b) a means for supporting said top sheet a finite distance above said underlying base and for providing space for said top sheet to yield to and accommodate said bottom-most portion of a reasonably well-aligned golf club swing-arc, such that said mat has an aggregate, total rigidity of 40 pounds per square inch or less.

10. A golf swing practice mat for placement on an underlying base to aid a golfer in improving his or her swing of a golf club having a club head, said swing comprising a swing-arc having a bottom-most portion thereof, said golf swing practice mat comprising:

(a) a low friction, flexible and resilient top sheet that is directly contacted by said club head and has a rigidity of 40 pounds per square inch or less; and

(b) a bottom pad for supporting said top sheet a finite distance above said underlying base, and for providing space for said top sheet to yield to and accommodate said bottom-most portion of a reasonably well-aligned swing-arc, said bottom pad being compressible to 50% of its resting height by an applied pressure of 0.0028 Mpa (4 psi) or less.

11. The golf swing practice mat of claim 10, wherein said bottom pad is at least 0.95 cm (0.375 in) thick.

12. The golf swing practice mat of claim 10 wherein said top sheet has a rigidity of 30 pounds per square inch or less.