U.S. patent application number 11/156445 was filed with the patent office on 2006-12-21 for method and apparatus for practicing a golf swing.
Invention is credited to Don T. Cameron, Paul K. Vizanko.
Application Number | 20060287121 11/156445 |
Document ID | / |
Family ID | 37574123 |
Filed Date | 2006-12-21 |
United States Patent
Application |
20060287121 |
Kind Code |
A1 |
Cameron; Don T. ; et
al. |
December 21, 2006 |
Method and apparatus for practicing a golf swing
Abstract
A method and apparatus for practicing a golf stroke is
disclosed. A light projecting apparatus is provided for placement
on a shaft of a golf club. A beam of light from the apparatus is
projected downwardly onto a surface below a club head of the golf
club and is adapted to form a cross pattern of light on the
surface. The cross pattern includes a first line of light
substantially parallel to a bottom edge of a striking face of the
club head and a second line of light extends through the striking
face. The golfer may use the cross pattern of light to practice
improving their putting or golf stroke technique. In another
embodiment, the cross pattern of light may be modified into a line
or dot of light.
Inventors: |
Cameron; Don T.; (Carlsbad,
CA) ; Vizanko; Paul K.; (San Marcos, CA) |
Correspondence
Address: |
ACUSHNET COMPANY
333 BRIDGE STREET
P. O. BOX 965
FAIRHAVEN
MA
02719
US
|
Family ID: |
37574123 |
Appl. No.: |
11/156445 |
Filed: |
June 20, 2005 |
Current U.S.
Class: |
473/220 |
Current CPC
Class: |
A63B 69/3685 20130101;
A63B 69/3614 20130101; A63B 69/3632 20130101 |
Class at
Publication: |
473/220 |
International
Class: |
A63B 69/36 20060101
A63B069/36 |
Claims
1. A method of practicing a golf stroke, comprising the steps of:
providing a light projecting apparatus on a shaft of a golf club;
projecting a beam of light from the apparatus onto a surface below
a club head of the golf club to form a cross pattern of light on
the surface, the cross pattern having a first line of light
substantially parallel to a bottom edge of a striking face of the
club head and a second line of light extending through the striking
face; and performing a swing with the golf club.
2. The method of claim 1, wherein the light projecting apparatus is
a laser.
3. The method of claim 1, wherein the second line of light extends
for a distance before the striking face, and for a distance through
the striking face of the club head.
4. The method of claim 1, further comprising the step of detachably
connecting the apparatus to the shaft of the golf club.
5. The method of claim 1, further comprising the step of: removably
inserting the apparatus into a grip on the shaft of the golf
club.
6. The method of claim 1, further comprising the step of: adjusting
the apparatus on the shaft to align the first line in substantially
parallel alignment to the striking face of the golf club.
7. The method of claim 1, further comprising the step of: providing
a guide line along a surface adjacent to the golf stroke.
8. The method of claim 1, further comprising the step of: aligning
the golf club striking face with the desired golf stroke path using
the cross pattern of light.
9. The method of claim 1, further comprising the step of: modifying
the beam of light to change the cross pattern into a line of
light.
10. The method of claim 9, wherein the line of light is parallel to
the striking face.
11. The method of claim 9, wherein the line of light passes through
the striking face.
12. The method of claim 1, further comprising the step of:
modifying the beam of light to change the cross pattern into a dot
of light.
13. The method of claim 1, wherein the golf club is a putter.
14. The method of claim 1, wherein the golf club is an iron.
15. A method of practicing a putter stroke, comprising the steps
of: providing a putter having a head, a heel, a toe, a planar
striking face, an offset hosel and a shaft; providing a light
source separate from the putter head; directing light from the
light source adjacent the putter head; forming a cross pattern with
the directed light, the cross pattern having a first line of light
substantially parallel to a bottom edge of the striking face and a
second line of light extending through the striking face; and
aligning a putting stroke path using the cross pattern of
light.
16. The method of claim 15, further comprising the steps of:
providing the light source within the shaft of the putter; and
directing light through the shaft of the putter and through an
aperture provided in a base of the offset hosel, such that the
light strikes a surface below the putter head, wherein the golfer
may align and practice a putting stroke path using the cross
pattern of light.
17. The method of claim 16, further comprising the step of:
providing a lens on the base of the offset hosel substantially
covering the aperture, the lens forming the light into a cross
pattern.
18. The method of claim 16, further comprising the step of:
selecting a lens from a group of lenses comprising lenses that form
at least the cross pattern, a line pattern and a dot pattern; and
removably connecting the selected lens to the base of the hosel
substantially covering the aperture to form the desired light
pattern.
19. The method of claim 15, wherein the light projecting apparatus
is a laser.
20. The method of claim 15, wherein the second line of light
extends for a distance before the striking face and for a distance
through the striking face of the club head.
21. The method of claim 15, further comprising the step of:
adjusting the apparatus on the shaft to align the first line in
substantially parallel alignment to the striking face of the golf
club.
22. The method of claim 15, further comprising the step of:
providing a guide line along a surface adjacent to the golf
stroke.
23. The method of claim 15, further comprising the step of:
aligning the golf club striking face with the desired putting
stroke path using the cross pattern of light.
24. The method of claim 15, further comprising the step of:
modifying the beam of light to change the cross pattern into a line
of light.
25. The method of claim 24, wherein the line of light is parallel
to the striking face.
26. The method of claim 24, wherein the line of light passes
through the striking face.
27. The method of claim 15, further comprising the step of:
modifying the beam of light to change the cross pattern into a dot
of light.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to golf clubs and, more
particularly, to an apparatus and method for aiding and improving a
player's golf swing.
BACKGROUND OF THE INVENTION
[0002] One of the keys to a successful golf game is the golf swing.
Golf is a sport which requires a substantial amount of skill and
practice. There are many technical aspects of a golf swing that can
affect the characteristics of a golf shot. For example, stance,
backswing and follow-through can affect the distance and accuracy
of a golf shot. In order to be successful at golf, a golfer should
have a consistent, yet technically sound swing. That is, a golfer
wants a good swing, but also, in most situations, wants to swing
the golf club the same way every time (i.e., consistency).
[0003] A golfer practices to improve their swing or golf stroke.
When a golfer does not maintain a technically sound swing, a golf
ball is often sliced or hooked. One common reason is that the
golfer twists his or her wrists or arms unconsciously after his or
her address position in the course of a swing. As a result, the
club face may be opened or closed, which makes the golf ball slice
or hook. It is important to maintain the proper position of the
arms or the wrists of the golfer during a swing.
[0004] Another of the strokes a golfer must master and one that is
equally difficult to teach is a good, squarely-aligned, repetitive
putting stroke. Recreational players can lose valuable strokes that
would otherwise significantly improve their scores, by taking three
and four putts per green. Even professional players are greatly
affected by their ability (or lack thereof) to putt. Good or even
proficient putting may be the difference between a professional
attaining or retaining their tour privileges, making or missing a
cut in a tournament, or even winning or losing a tournament.
[0005] One way in which golfers' can improve their putting stroke
is to use an alignment system. A variety of patents have issued
that describe putter alignment methods, including U.S. Pat. Nos.
5,165,691; 5,169,150; 5,193,812; 5,207,429; 5,213,331; 5,330,188;
and 5,388,832. Most of these alignment methods involve reference
lines, lighted guides, marked training mats, or some combination
thereof.
[0006] While teaching professionals manually instruct their
students to change certain aspects of their swing (whether for
drivers, fairway woods, irons or putters), they are often less than
fully successful due to the difficulty of the pupil carrying out
such an oral instruction. Moreover, while numerous teaching aids
for developing a golf swing have been invented and developed over
the years, none is known to have successfully addressed the
specific ability to improve the teaching professional's ability to
teach and have his pupil learn a proper orientation of the club
face in the address stance, backswing and follow-through; to
address the ability of the golfer to learn and/or to practice such
swing on his/her own; and to practice a proper swing and/or putting
technique.
[0007] In view of the above it is apparent that there exists a need
in the art for a swing training method and device for use on a golf
club that, when coupled together, provide a golfer with a removable
(to keep the club within all United States Golf Association rules
and regulations and to allow it to be switched between clubs), yet
substantially error-free way of monitoring and improving their golf
strokes. The present invention provides such a swing training
method and device by using a light projecting apparatus, such as a
laser, that provides a cross pattern to refine and improve a
golfer's swing with different clubs.
SUMMARY OF THE INVENTION
[0008] The present invention is directed to a light projecting
apparatus and method of using the light projecting apparatus for
improving a golf stroke. In one embodiment, a method of practicing
a golf stroke is disclosed. The method comprises the steps of
providing a light projecting apparatus on a shaft of a golf club,
projecting a beam of light from the apparatus onto a surface below
a club head of the golf club to form a cross pattern of light on
the surface, the cross pattern having a first line of light
substantially parallel to a bottom edge of a striking face of the
club head and a second line of light extending through the striking
face, and performing a swing with the golf club.
[0009] The light projecting apparatus may be a laser. In one
embodiment, the light is collimated, focused, or both. The second
line of light may extend for a distance before the striking face,
and for a distance through the striking face of the club head. In
one embodiment, at least one of the first and second lines of light
may extend for no greater than about 1 foot.
[0010] The method may include the step of detachably connecting the
apparatus to the shaft of the golf club or removably inserting the
apparatus into a grip on the shaft of the golf club. The method may
include the step of adjusting the apparatus on the shaft to align
the first line in substantially parallel alignment to the striking
face of the golf club. The method may include the steps of
providing a guide line along a surface adjacent to the golf stroke
or aligning the golf club striking face with the desired golf
stroke path using the cross pattern of light.
[0011] The method may include the steps of modifying the beam of
light to change the cross pattern into a line of light, wherein the
line of light is parallel to the striking face or the line of light
passes through the striking face. The method may include the step
of modifying the beam of light to change the cross pattern into a
dot of light.
[0012] The golf club in the method may be a putter, an iron, a
fairway wood or a driver.
[0013] In another embodiment, a method of practicing a putting
stroke disclosed. The method comprises the steps of providing a
putter having a head, a heel, a toe, a planar striking face, an
offset hosel and a shaft, providing a light source separate from
the putter head, directing light from the light source adjacent the
putter head, forming a cross pattern with the directed light, the
cross pattern having a first line of light substantially parallel
to a bottom edge of the striking face and a second line of light
extending through the striking face, and aligning a putting stroke
path using the cross pattern of light.
[0014] The method may further comprise the steps of providing the
light source within the shaft of the putter, and directing light
through the shaft of the putter and through an aperture provided in
a base of the offset hosel, such that the light strikes a surface
below the putter head, wherein the golfer may align and practice a
putting stroke path using the cross pattern of light.
[0015] The method may include the step of providing a lens on the
base of the offset hosel substantially covering the aperture, the
lens forming the light into a cross pattern. The method may include
the steps of selecting a lens from a group of lenses comprising
lenses that form at least the cross pattern, a line pattern and a
dot pattern, and removably connecting the selected lens to the base
of the hosel substantially covering the aperture to form the
desired light pattern.
[0016] The method may include the step of aligning the golf club
striking face with the desired putting stroke path using the cross
pattern of light. The method may include the step of modifying the
beam of light to change the cross pattern into a line of light,
wherein the line of light is parallel to the striking face or
wherein the line of light passes through the striking face. The
method may include the step of modifying the beam of light to
change the cross pattern into a dot of light.
[0017] In another embodiment, a putter is disclosed. The putter
comprises a head comprising an offset hosel, a heel, a toe and a
planar striking face, a hollow shaft attached to the hosel, a light
projecting apparatus provided within the shaft, and an aperture
provided at a base of the hosel, wherein the light projecting
apparatus is adapted to direct light through the shaft and hosel to
a surface below the putter head, the light forming a cross pattern
on the surface.
[0018] The cross pattern may comprise a first line of light
substantially parallel to a bottom edge of the striking face and a
second line of light extending through the striking face. The
putter may include a grip at a distal end of the shaft opposite the
hosel, the light projecting apparatus may be removably provided
within the grip.
[0019] The putter may also comprise a removable lens at the base of
the hosel substantially covering the aperture and adapted to form
the light into the cross pattern. A second lens may be removably
connectable to the base to substantially cover the aperture and
adapted to form the light into a line of light. A third lens may be
removably connectable to the base to substantially cover the
aperture and adapted to form a dot of light.
[0020] The light projecting apparatus may be adapted to project
light to form a line or a dot. A pattern selection mechanism may be
provided on the light projecting apparatus, the pattern selection
mechanism for selecting a pattern of light including at least the
cross pattern, a line pattern or a dot pattern.
[0021] In yet another embodiment, a golf stroke training device for
attachment to a golf club is disclosed. The golf stroke training
device comprises a light source providing a beam of light in a
cross pattern, a housing for housing the light source, an
attachment mechanism for removably securing the housing to a shaft
of a golf club, wherein the cross pattern assists in aligning the
striking face of the golf club and practicing a golf stroke
path.
[0022] The cross pattern may comprise a first line of light is
adapted to extend substantially parallel to a bottom edge of the
striking face and a second line of light is adapted to extend
through the striking face. The light source may be adapted to
project light to form a line or a dot. A pattern selection
mechanism may be provided on the light source for selecting a
pattern of light, the patterns including the cross pattern, a line
pattern or a dot pattern.
[0023] A removable lens may be provided at a first end of the light
source, the lens forming a cross pattern with the light. A second
lens may be removably connectable to the first end of the light
source, the lens adapted to form the light into a line of light. A
third lens may be removably connectable to the first end of-the
light source, the lens adapted to form the light into a dot of
light. A switch may be provided on the light source for turning the
light source on and off.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Preferred features of the present invention are disclosed in
the accompanying drawings, wherein similar reference characters
denote similar elements throughout the several views, and
wherein:
[0025] FIG. 1A is a perspective view of a light projecting
apparatus according to the present invention;
[0026] FIG. 1B is a perspective view of removable lenses for use
with the light projecting apparatus of FIG. 1;
[0027] FIG. 2 is a perspective view of the light projecting
apparatus of FIG. 1 detachably connected to a golf club according
to the present invention;
[0028] FIG. 3A is a perspective view of an attachment mechanism for
use with the present invention;
[0029] FIG. 3B is a perspective view of an alternative attachment
mechanism for use with the present invention;
[0030] FIG. 4 is a perspective view of a putter head for use with
the present invention having the light projecting apparatus of FIG.
1 and generating a cross-pattern of light;
[0031] FIG. 5 is a top view of the putter according to FIG. 4
having the light projecting apparatus;
[0032] FIG. 6 is an end view of the putter according to FIG. 4
having the light projecting apparatus;
[0033] FIG. 7 is a side view of the grip end of the putter
according to FIG. 4;
[0034] FIG. 8 is a cross-sectional view of the grip end of the
putter according to FIG. 7 showing the light projecting
apparatus;
[0035] FIG. 9 is a top view of the putter head and cross pattern of
light at various positions during the putting stroke;
[0036] FIG. 10 is a perspective view of a golfer with a golf club
having the light projecting apparatus of FIG. 1;
[0037] FIGS. 11 A-C are front views of a portion of a backswing
from the golfer's perspective using a golf club and the light
projecting apparatus of FIG. 1;
[0038] FIG. 12 is a perspective view of the light projecting
apparatus of FIG. 1 detachably connected to a golf club according
to another embodiment of the present invention;
[0039] FIG. 13 is a perspective view of an attachment mechanism for
use with a golf club and light projecting apparatus according to
FIG. 12;
[0040] FIG. 14A is an end view of a putter at a first address
stance position having the attachment mechanism of FIG. 13;
[0041] FIG. 14B is a top view of the putter of FIG.1 4A showing the
location of the cross pattern of light for the first address stance
position;
[0042] FIG. 15A is an end view of a putter at a second address
stance position having the attachment mechanism of FIG. 13;
[0043] FIG. 15B is a top view of the putter of FIG. 15A showing the
location of the cross pattern of light for the second address
stance position;
[0044] FIG. 16A is an end view of a putter at a third address
stance position having the attachment mechanism of FIG. 13; and
[0045] FIG. 16B is a top view of the putter of FIG. 16A showing the
location of the cross pattern of light for the third address stance
position.
DETAILED DESCRIPTION OF THE INVENTION
[0046] An apparatus for practicing a golf swing is disclosed. As
illustrated in FIGS. 1A-2, a light projecting apparatus or light
source 20 is mounted on a portion of a shaft 22 of a golf club 24.
The golf club 24 is provided with a club head 26 having a striking
face 28 with a sweet spot, which is generally aligned with the
center of mass of the club head 26 and the portion of the striking
face 28 which is designed to impact a golf ball during a golf
stroke or putting stroke so that no twist is imparted to the shaft
22 during the stroke. The club head 26 is connected to the shaft 22
through a hosel 30. The club head 26 includes a heel portion 32
adjacent the hosel 30 and a toe portion 34 opposite the heel
portion 32. A crown portion 36 is provided on the top of the club
head 26 and a sole portion 38 is provided on the bottom of the club
head 26. As will be appreciated, the golf club 24 as illustrated in
FIG. 2 is a driver; however, one of skill in the art will
understand that the present invention may also be used with fairway
woods, irons and putters as will be hereinafter described.
[0047] According to the present invention and referring to FIGS.
1A-1B, the light projecting apparatus 20 may include a housing 40,
which has a substantially cylindrical cross-section and is
preferably formed of plastic material. As illustrated in FIG. 1A,
the housing 40 includes a first end 42 having a removable closure
44 through which access may be obtained to the interior of the
housing 40. Mounted within the housing 40 is an energy source (not
shown) such as batteries which are electrically connected to a low
power laser source (not shown) by way of a switch assembly 46. The
switch assembly 46 is shown in the "ON" position in FIGS. 2 and 4
whereby the laser source is activated to emit a beam of light 48
which forms a pattern of light on a practice or putting surface 49
and the club head 26. With reference to FIG. 1, the light beam 48
is directed through an opening 50 in a second end 52 of the housing
40.
[0048] As illustrated in FIG. 2, the light beam 48 is provided in a
cross pattern 54 of light with first and second lines 56 and 58.
The first line 56 is intended to extend substantially parallel to a
bottom edge 51 of the striking face 28 of the club head 26, while
the second line 58 is intended to extend through the striking face
28 of the club head 26, and when held in an address stance position
to extend substantially perpendicular to the striking face 28.
[0049] The light projecting apparatus 20 may be any suitable light
and may have a collimated and/or focused light beam. For example,
the light may be emitted from a low power laser source such as a
laser pointer, typically a solid state laser of minimal power
(typically less than about 5 mW and a class IIIa laser product).
Any suitable light source may be used. One such laser is the #100
pointer laser from Quarton, USA of Walnut, Calif. A laser that
emits red, green or other colored light is contemplated by the
invention. Different color light may be easier to see when used
under different lighting conditions. For example, when the device
is used outdoors green light may be easier to see.
[0050] In an alternative embodiment, as illustrated in FIG. 1B,
removable lenses 60, 62, and 64 may be provided on the second end
52 of the housing 40. The different lenses may modify the light
beam 48, such that the beam is made into a cross pattern 54 with a
first lens 60, a line of light 68 with a second lens 62, or a dot
70 with a third lens 64. The lenses may be removably secured to the
second end 52 of the housing 40 in any suitable manner. For
example, the lenses may be removably attached to the second end 52
of the housing 40 by a snap fit interface or by an interlocking
threaded interface on the lens and the second end 52 of the housing
40. As is known in the art, the lenses 60, 62 and 64 may have any
desired optics to transform the light beam 48 into the desired
pattern, including a cross pattern 54, line 68 or dot 70 of light.
Different optics in the lens will generate different length or
width lines. The optical lenses may be made of glass, plastic or
any other suitable material. The optical lenses have any suitable
shape to generate the desired pattern for the light beam. For
example, a cylindrical lens may generate a light beam into a fan to
form a line. It will be appreciated that the lens for the dot 70
may not modify the light beam 48, or that it may not be necessary
to have a lens to form the dot 70. For example, the user could use
the laser without a lens to form the dot 70.
[0051] In an alternative embodiment, a single lens may be used to
generate each pattern so that the lens does not need to be
interchanged. In another embodiment, a pattern selection mechanism
(not shown) may be provided to automatically modify the light beam
48 upon selection by the user, for example by internally changing
or moving the lens or by any other suitable means, thereby
generating the light beam into the desired pattern, including the
cross pattern 54, line 68 or dot 70 of light. The pattern selection
mechanism may be part of the laser.
[0052] The housing 40 may be detachably connected to the shaft 22
of the golf club 24 by an attachment mechanism 66. It will be
appreciated that any suitable attachment mechanism 66 may be used
and that the light projecting apparatus 20 may be permanently
attached to the golf club 24. As illustrated in FIG. 2, the housing
40 may include at least one clamp 72 to allow the shaft 22 of the
golf club 24 to be inserted therebetween and retained by friction.
The light projecting apparatus 20 is thereby secured substantially
parallel to the axis A-A of the shaft 22 of the golf club 24. The
clamp 72 may be integrally molded with the housing 40 or the clamp
72 may be securable to the housing 40 using a fastener, such as a
hook and loop fastener.
[0053] In another embodiment illustrated in FIGS. 3A-3B, the
attachment mechanism 66 may include two side-by-side or opposing
C-shaped clamp members 74 and 76. The clamp members feature an
opening 78, such that they may be friction fit on a substantially
cylindrical member. The first one of the clamps 74 may be inserted
on the housing 40 of the light projecting apparatus 20 and the
second one of the clamps 76 may be inserted on the shaft 22 of the
golf club 24.
[0054] In either embodiment, the user may rotate the housing 40
about the shaft 22 and/or within the attachment mechanism 66 to
align the first line 56 such that it is substantially parallel to
the striking face 28 of the club head 26. It will be appreciated
that any suitable attachment mechanism 66 may be used to removably
secure the light projecting apparatus 20 to the shaft 22 of the
golf club 24, such that the light projecting apparatus 20 is
aligned substantially parallel to the shaft 22.
[0055] According to another embodiment, the present invention may
be used on a particular type of putter. Referring to FIGS. 4-10, a
putter head 100, typically attached to a shaft 102 (only partially
shown), comprises an offset hosel 104 for receiving the shaft, a
heel portion 106 at the hosel end of the putter head 100, and a toe
portion 108 opposite the heel portion 106. Extending between the
heel portion 106 and the toe portion 108 is a striking face 110,
which is the surface that contacts the golf ball (not shown) upon
impact between the putter head 100 and the golf ball. The striking
face 110 generally includes a "sweet spot," or the center of
gravity in the toe to heel direction. The striking face 110 may be
comprised of the same material as the putter head or may include an
insert 110a, such as that disclosed in U.S. Pat. No. 6,231,458
("the '458 patent"), which is incorporated herein, in its entirety,
by express reference thereto. If an insert 110a is present, it
preferably comprises a soft material, such as an elastomeric
material or a tellurium copper alloy. A vibration dampening means,
such as an elastomeric material that is deformable may also be used
with the optional insert, as set forth in the '458 patent. In the
preferred embodiment, the elastomeric material is a silicone
material, Stock No. GE281, available from General Electric Company
in Waterford, N.Y.
[0056] The striking face 110 has a loft angle, which may be any
angle, but is preferably less than about 10 degrees, more
preferably, between about 2 degrees and about 7 degrees, and most
preferably, between about 3 degrees and about 5 degrees.
Preferably, the loft of the striking face 110 is set so that the
putter has 4 degrees of loft at impact for the individual golfer
using the putter.
[0057] Referring to FIG. 4, the putter further comprises the light
projecting apparatus 20 that directs the light beam 48 to form the
cross pattern 54 with at least one first line 112 of light and at
least one second line 114 of light on a putting surface 118 and the
putter head 100. The first line 112 is spaced apart from and
substantially parallel to a bottom edge 115 of the striking face
110, which is substantially planar and extends from adjacent the
heel 106 to adjacent the toe 108 of the putter head 100.
Preferably, the first line 112 extends at least adjacent the heel
106 to at least adjacent the toe 108, and more preferably beyond
both the heel 106 and the toe 108. Still more preferably, the first
line 112 is about one foot in length. In another embodiment, the
first line extends up to at least several feet in length. The
second line 114 is provided on the top surface 116 of the putter
head 100 and the putting surface 118, substantially extending
through the striking face 110. The second line 114 may be oriented
perpendicular to the striking face 110 and the first line 112,
particularly in an address stance of the golfer. The second line
114 preferably extends beyond the striking face 110 of the putter,
and more preferably extends beyond a back end 119 (FIG. 5) of the
putter head 100. Still more preferably, the second line 114 is
about one foot in length. In another embodiment, the second line
114 extends up to at least several feet in length.
[0058] The hosel 104 can form an angle relative to the top surface
116 of the putter head 100 to provide all or part of the lie angle.
Generally, putter hosels extend from the putter perpendicularly and
the shaft receiving boss is angled to form the lie angle. However,
in the present invention, the hosel itself can be angled.
Preferably, the hosel 104 forms an angle of about 10 degrees to
about 30 degrees with the top surface 116 of the putter head 100
and, more preferably, forms and angle of about 15 degrees to about
25 degrees with the top surface 116 of the putter head 100.
[0059] Referring to FIGS. 5-8, the putter 100 comprises a grip 120
attached to distal end 122a of the hollow shaft 102 and the offset
hosel 104 for receiving the proximal end 122b of the shaft. The
hosel 104 generally contains a shaft boss 104b for receiving the
shaft. The hosel 104 further comprises a hosel aperture 104a into
which the hollow shaft 102 is received.
[0060] The grip 120 has a first and second aperture 126a and 126b,
the first aperture 126a for receiving the distal end 122a of the
shaft 102, and the second aperture 126b for receiving the light
projecting apparatus 20, such as that described above. The second
aperture 126b should have a diameter sufficiently sized to receive
the light projecting apparatus 20, while firmly retaining it in the
aperture. The apertures may be any diameter; however, preferred
diameters are less than about 0.75 inches, more preferably less
than about 0.5 inches, and most preferably less than about 0.3
inches. The aperture 126b may be covered by a cap.
[0061] Further, the diameter of both the second aperture 126b and
the light projecting apparatus 20 should be smaller than the
internal diameter of the hollow shaft 102 such that the light
projecting apparatus 20 will fit inside and co-axial with the
hollow shaft 102. The light projecting apparatus 20 is positioned
substantially co-linear with the axis of the hollow shaft 102 such
that the light beam 48 is directed through the shaft 102 and may
emerge from the proximal end of the shaft 122a and through the
hosel aperture 104a. The light beam 48 will be visible on the
putting surface 118 and on the putter head 100. As described above,
the light beam 48 may be in a cross pattern, allowing a golfer to
follow the track of the putting stroke and the orientation of the
striking face 110 while actually making the putting stroke. There
is, therefore, a method of training a golfer to align the striking
face 110 of the putter and follow a proper putting stroke swing
afforded by the above-described light-source-containing putter.
[0062] It will be appreciated that the lenses 60, 62 and 64
described above with regard to the light projecting apparatus 20
may be used with the light source contained in the grip 120 or
shaft 102 of the putter 100 to change the light beam 48 into the
cross pattern 54, line 68 or dot 70 as desired by the golfer. This
may be done as described above with the desired lens 60, 62 and 64
being removably connectable to the second end 52 of the housing 40
of the light projecting apparatus 20. Alternatively, the lenses 60,
62 and 64 may be removably connectable to the distal end of the
hosel 104 at aperture 104a to cover the aperture and change the
light beam 48 into the cross pattern 54, line 68 or dot 70, as
desired by the golfer.
[0063] The golfer may removably insert the light projecting
apparatus 20 into the grip of the putter 100 when the golfer
desires to practice their putting technique. The light projecting
apparatus 20 is easily removable from the putter so that the putter
may comply with USGA rules. Also, it will be appreciated that the
light projecting apparatus 20 may then be used with other clubs in
the same manner or by an attachment mechanism 66 as described
herein.
[0064] The below described method may be used with the light
projecting apparatus 20 and attachment mechanisms 66 described
above in FIGS. 1A-3B, or with the light projecting apparatus 20 and
putter 100 combination of FIGS. 4-8. It will also be appreciated
that although the cross pattern, line and dot are-illustrated in
FIGS. 1-8 such that they would be seen on a golf ball in front of
the club head, it is contemplated that the cross pattern, line or
dot may be provided between the golfer's feet and the golf ball or
club head or beyond the golf ball or toe of the club head and that
the cross pattern or dot may also be provided to either side of the
golf ball or club head.
[0065] In a method of aligning and practicing a putting stroke, a
golfer holds the putter in the manner they typically would while
addressing a golf ball prior to making a putting stroke. The light
projecting apparatus 20 on the putter directs the light beam 48 to
form a cross pattern 54 of light on the putting surface 118 and on
the putter head 100. The golfer may use the first and second line
112 and 114 to squarely align the striking face 110 and to properly
align the putter head 100 with the target. The golfer may use the
cross pattern 54 while practicing a putting stroke, allowing the
golfer to make adjustments in how they swing the putter to perfect
their putting stroke technique. The first and second lines 112 and
114 assist the golfer in understanding how to properly orient the
striking face 110 and to keep the putter head 100 oriented properly
throughout the entire putting stroke (i.e., keeping the second line
perpendicular to the golfer throughout the swing). Not only can the
golfer ensure consistent putter head 100 orientation and proper
putting stroke technique, but they can use the light projecting
apparatus 20 as a training aid to correct and adjust poor or
incorrect alignment with the target.
[0066] With reference to FIG. 9, a guide line 130 may be used to
practice the golf or putting stroke. The guide line 130 may be a
line, string or tape applied in a straight line along the putting
or practice surface 118. It will be appreciated that any other
straight lines may be used for the guide line 130, including a
straight line formed by the flooring, as with the grout between
tiles or by a practice mat. During the putting motion illustrated
in FIG. 9, the cross pattern 54 generated by the light beam 48 on
the putting surface 118 and club head 100 is shown during the
address stance position 132, backswing 134 and follow-through 136.
It will be appreciated by viewing the FIG. 9 that contrary to
ordinary assumptions, the second line 114 of the cross pattern
follows the guide line 130 throughout the putting stroke, while the
first line 112 stays parallel to the striking face 110 of the club
head 100 throughout the stroke. Thus, at various points during the
putting stroke the first and second lines 112 and 114 appear
perpendicular to each other, while at other points they do not
(i.e., during the backswing and follow-through).
[0067] In another embodiment, while practicing their golf stroke,
the golfer may change the lens 60 on the housing 40 or on the
putter 100 (as described above) in order to change the light beam
48 from a cross pattern 54 to a line 68 or dot 70 of light. The
golfer may use the different lenses 60, 62 and 64 to perform
different practice drills. It will be appreciated that the line 68
of light may be oriented as desired by the golfer relative to the
striking face 28 and 110. For example, the line 68 may be provided
parallel to the striking face 28 and 110 or may extend through the
striking face 28 and 110. In yet another embodiment a pattern
selection mechanism provided on the light projecting apparatus 20
may be used to switch between different light beam 48 patterns,
including the cross 54, line 68 or dot 70 patterns of light. It
will be appreciated that numerous different drills for practicing a
golf swing may be found effective when using the light projecting
apparatus 20; the present invention intends to encompass these
different techniques.
[0068] It will be appreciated that the light projecting apparatus
20 may be used during a non-putting golf stroke, for example, with
irons, fairway woods and drivers as illustrated in FIG. 10. The
light projecting apparatus may at least assist the golfer in
understanding the orientation of the club face at various points
during the golf stroke. As illustrated in FIGS. 11A-11C, the cross
pattern illustrates for the golfer when the striking face 28 is not
perpendicular to the ground at a certain desired point during their
backswing and/or follow-through. It will be appreciated, that since
the light beam 48 is not being directed at the ground or practice
surface 49 during the backswing or follow-through, the golfer, in
order to more readily see the cross pattern 54 or other light beam
48, may place a wall or other surface 138 (such as a screen) behind
the desired portion of their swing. This allows the golfer to more
readily see the cross pattern 54 or other pattern of light from the
light projecting apparatus 20.
[0069] For example, FIGS. 11A-11C show the club head 26 with the
striking face 28 in different orientations at the same point during
the backswing when the golf club is substantially parallel to the
practice surface or ground 49. FIG. 11A illustrates a proper
orientation for the striking face 28 at this position with the
striking face 28 being substantially perpendicular to the practice
surface 49. The orientation of the cross pattern 54 on the wall 138
clearly illustrates this for the golfer. FIG. 11B illustrates the
striking face 28 being in a closed position (likely to cause the
golfer to hook the shot), with the striking face 28 and the cross
pattern 54 oriented toward the practice surface 49 with the first
line 56 not being perpendicular to the practice surface 49. FIG.
11C illustrates the club striking face 28 being in an open position
(likely to cause the golfer to slice the shot), with the striking
face 28 and cross pattern oriented away from the practice surface
49 with the first line 56 not being perpendicular to the practice
surface 49. A golfer upon seeing the cross pattern 54 will readily
understand the position in which the striking face 28 is oriented
and be able to modify the orientation of the striking face 28 at
that point during their golf stroke to improve their golf
swing.
[0070] FIGS. 12-16B illustrate a different use for the light
projecting apparatus 20, to assist in improving a golfer's address
stance. As illustrated in FIG. 12, the light projecting apparatus
20 is connected to the shaft of the golf club 24 in a different
manner than described above. The housing 40 has a first end 42 that
is connected to the shaft 22 in a manner such that it swings freely
like a pendulum from the shaft 22. Gravity causes the second lower
end 52 to hang straight downwardly or plumb. It is preferable that
a weight 140 be placed adjacent the second end of the housing 40.
For example, the weight 140 may be temporarily connected to the
housing in any suitable manner, such as by a clip or hook and loop
fastener. The weight 140 assists gravity in maintaining the housing
40 in a straight downwardly orientation.
[0071] FIG. 13 illustrates one possible embodiment for an
attachment mechanism 66 to freely hang the light projecting
apparatus 20 from the shaft 22 as described above. The attachment
mechanism 66 includes a C-shaped clamp 142 for friction attachment
to the shaft 22, and a ball/socket joint 144 for the light
projecting apparatus 20 to hang freely by gravity from the shaft 22
in a downward orientation so that the light projecting apparatus is
vertical or plumb. The balusocket joint rotates freely and allows
the light projecting apparatus to maintain a plumb position. The
C-shaped clamp may have either the ball or socket portion of the
joint 144, and the ball and socket may be press-fit into one
another. As will be understood by one of ordinary skill in the art,
any suitable attachment mechanism 66 that allows the light
projecting apparatus 20 to hang freely and downwardly by gravity
may be used. Preferably, the attachment mechanism is removable so
that the light projecting apparatus may be used both as already
described above and as described below.
[0072] FIG. 14A illustrates a golf club 24 having a light
projecting apparatus 20 attached according to FIGS. 12-13. In this
particular instance a putter is illustrated, although other clubs
may be used. The club is provided at a first address stance
position 146. The light projecting apparatus 20 projects a cross
pattern 54 downwardly between the club head 148 and the feet of the
golfer (not shown). As illustrated in 14A, the golfer is holding
the shaft 150 so that the shaft 150 is leaning slightly to the
left. As illustrated in FIG. 14B, the cross pattern 54 of light is
shown on the practice surface 118 between the club and the golfer,
but off-center to the left of the club head 148. As illustrated in
FIG. 15A, the golfer is holding the shaft 150 and club in a second
address stance position 152, so that it is oriented in a straight
up-down position. In FIG. 15B, the cross pattern 54 of light is
located on the practice surface 118 between the club head 148 and
the golfer's feet (not shown) and directly behind the club head
148. As illustrated in FIG. 16A, the golfer is holding the shaft
150 and club in a third address stance position 154, so that it is
leaning slightly to the right. As illustrated in FIG. 16B, the
cross pattern 54 of light is shown on the practice surface 118
between the club head 148 and the golfer's feet (not shown), but
off-center to the right of the club head 148. Thus, a golfer may
use the light projecting apparatus to understand how they are
orienting the shaft and the club head in their address stance
position and correct their address stance position accordingly.
[0073] As will be appreciated, a golfer may use the light
projecting apparatus in any of the above described embodiments and
drills, and that the light projecting apparatus may be readily
switched between these embodiments for use as desired by the
golfer.
[0074] It will also be appreciated that although the cross pattern,
line and dot are illustrated in FIGS. 1-11C such that they would be
seen on a golf ball in front of the club head, it is contemplated
that the cross pattern, line or dot may be provided between the
golfer's feet and the golf ball or club head or beyond the golf
ball or toe of the club head and that the cross pattern or dot may
also be provided to either side of the golf ball or club head.
[0075] The invention described and claimed herein is not to be
limited in scope by the specific embodiments herein disclosed,
since these embodiments are intended as illustrations of several
aspects of the invention. Any equivalent embodiments are intended
to be within the scope of this invention. Indeed, various
modifications of the invention in addition to those shown and
described herein will become apparent to those skilled in the art
from the foregoing description. Such modifications are also
intended to fall within the scope of the appended claims.
* * * * *