U.S. patent number 3,779,398 [Application Number 05/119,301] was granted by the patent office on 1973-12-18 for golf putter.
Invention is credited to James T. Hunter.
United States Patent |
3,779,398 |
Hunter |
December 18, 1973 |
GOLF PUTTER
Abstract
A golf putter wherein the club head includes an arcuate rear
surface and a top surface having a recess therein. The arcuate rear
surface has a radius of curvature slightly less than the radius of
curvature of a golf putting cup. The recess in the top surface is
generally in the shape of a semi-circle having a radius of
curvature which is slightly greater than the radius of curvature of
a golf ball. The semi-circular recess includes a bottom formed by
an insert and opens into the rear arcuate surface whereby the club
head may be inserted into a putting cup to scoop balls into the
semi-circular recess for retrieving balls without stooping. A
vertical plane bisecting the semi-circular recess and arcuate rear
surface passes through the sweet spot on the front face of putter
head, whereby the recess and rear surface facilitate aligning the
putter head with the putting cup. The semi-circular recess includes
substantially vertical side walls which the player can employ
visually to assume substantially the same position relative the
putter head each time the ball is addressed for putting and thereby
supplement the kinesthetic training of the putting muscles.
Inventors: |
Hunter; James T. (Glendale,
AZ) |
Family
ID: |
22383656 |
Appl.
No.: |
05/119,301 |
Filed: |
February 26, 1971 |
Current U.S.
Class: |
473/249;
294/19.2 |
Current CPC
Class: |
A63B
53/0487 (20130101); A63B 53/0433 (20200801); A63B
53/0437 (20200801); A63B 53/0441 (20200801) |
Current International
Class: |
A63B
53/04 (20060101); A63b 053/00 (); A63b
069/36 () |
Field of
Search: |
;273/162,163,164,169,170,171,167,183,193,194,175 ;294/19A |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Marlo; George J.
Claims
Having now fullying described my invention and the present
embodiment thereof, I claim:
1. In a golf putter including a shaft and a head attached to one
end of said shaft, said putter being intended to propel a standard
golf ball towards a standard cylindrical putting green cup; said
head including:
a. a toe;
b. a heel;
c. a sole extending between said toe and heel;
d. a hosel extending upwardly from said heel and to which one end
of said shaft is connected;
e. a curved rear surface extending from said toe to said heel and
defined by an arc having a radius slightly less than that of said
golf cup;
f. a top surface extending between said toe and said hosel;
g. a recess opening onto said top and rear surfaces, said recess
being defined by a surface which is substantially vertical when
said head is in putting position and which surface is defined by an
arc of a radius slighlty greater than that of said golf ball;
h. two spaced points of intersection on said rear surface where the
arc defining said rear surface is intersected by the arc which
defines said recess, and
i. a front face extending between said toe and heel and having a
sweet spot that lies in the vertical plane which bisects the arcs
between said points of intersection when said head is in putting
position.
2. The golf putter head of claim 1 in which the recess extends into
the head from the top surface to a bottom surface spaced from the
sole.
Description
This invention relates to golf clubs.
More specifically, this invention relates to an improved putter
head which assists the player in lining up his putt.
In yet another aspect, this invention relates to an improvement
whereby the player can visually judge his position relative the
putter head more accurately and thereby assume substantially the
same position in preparation for his putt each time he addresses
the ball.
A great many putters of various configurations and with various
markings are known to the prior art. Many of these putters have
attempted to overcome the problem which almost all golfers have in
lining up their putts. Generally speaking, the art of putting well
is one that is mastered after many years of assiduous practice. The
player sharpens his skills and becomes a more consistent putter
largely through repetition and training of his kinesthetic senses.
The eye is of assistance in visually aligning the putter head, the
ball and the cup in a gross way. However, kinesthesia is largely
responsible for the degree of accuracy with which the golfer putts.
The golfer, having performed so many repetitions of a putt which
has been observed in the past to be correct, knows when he is
performing a good putt by the way it feels. One of the hindrances
to making a consistently good putt is the difficulty in properly
aligning the putter, the ball and the cup through visual means.
Another aspect of the visual problems connected with putting is the
difficulty inherent in trying to assume the same position relative
the putter head in successive putts. If the same position can be
dependably assumed on successive putts, then the putt will be more
regular and dependable. Thus, the kinesthetic sense of putting
developed by the player can be made to operate on the same factors
in successive putts, thus yielding a higher percentage of
successive putts and reinforcing the kinesthetic learning
process.
It is therefor an object of this invention to provide a novel
putter head which will assist the golfer in visually aligning the
putter head, the ball and the cup.
It is yet another object of this invention to provide such a putter
head which will enable the golfer to assume substantially the same
position relative the putter head by visual means on successive
putts.
It is a further object of this invention to make such a putter head
which is of simple and inexpensive construction.
Other, further and more specific objects and advantages of the
invention disclosed will become apparent to those skilled in the
art from the following description of the invention taken in
conjunction with the drawings, in which:
FIG. 1 is a perspective view of the front face of this
invention;
FIG. 2 is a sectional view of the device taken along the line 2--2
of FIG. 1;
FIG. 3 is a plan view of this invention;
FIG. 4 is a view of the rear face elevation of this invention;
and
FIG. 5 is a view of this invention in alignment with a golf ball
and a club green cup.
Briefly, the invention provides a golf putter head for use with a
standrad golf club shaft. The head has a front face which can be
said to have a sweet spot. In golfing vernacular, the sweet spot of
the putter head means the spot on the front face where the mass of
the club head is centered. In this sense, the same amount of mass
is disposed toward the heel and the toe of the club on each side of
the sweet spot. Thus, when the golf ball is contacted with the
sweet spot, a solid, satisfying contact is made between ball and
club and there is no resultant shudder or a tendency to pivot the
heel or toe of the club around the point of impact. The club also
has a rear face having a perimeter which describes a first arc of
the first circle. In the rear face is a recess which has a bottom
and a vertical sides. The vertical sides describe a cooperating arc
in the second circle intersecting the arc of the rear face. These
two arcs are positioned relative each other and the putter head
such that a substantially vertical plane bisecting the first arc
and the cooperating arc passes through the sweet spot of the front
face. Any means for visibly marking at least two cooperating arcs
of at least one circle on the putter head will suffice, although
refinements as indicated herein are preferred.
In common with other putter heads, the putter may be said to have a
toe, a heel, a sole, a neck and a hosel.
The invention also provides a recess which has a contoured bottom
which is shaped and sized to receive a golf ball. This is a
convenience in scooping a golf ball out of the cup or off the
green.
In another aspect, the first arc of this invention has
approximately the radius of curvature of a golf cup and the
cooperating arc has a radius of curvature slightly larger than the
radius of curvature of the golf ball.
Turning now to the drawings, attention is invited to FIG. 1 which
illustrates a novel putter head 1 in persective, with a standard
putter shaft to be fitted thereto shown in phantom outline. The
location of the sweet spot 2 is marked on the front face of the
putter head with an "X." The various parts of a putter head, though
not necessary to a description of this invention, are identified as
the toe 3, the heel 4, the neck 5 and the hosel 6. The rear face 7
is better illustrated in FIG. 4, as is the sole 8. The front face 9
is a flat surface with a substantially perpendicular orientation to
the turf when in an attitude of play. In the presently preferred
embodiment of this invention, the front face 9 is slightly open,
which means that it slopes toward the rear face 7 from sole 8 to
top surface 10.
The rear face 7, observed from above, as depicted in FIG. 3,
describes a first arc 11 of a first circle which has a slightly
smaller radius of curvature than a standard golf cup. A cooperating
arc 12 of a second circle intersects the first arc 11. The circle
from which the arc 12 is taken is slightly larger than the diameter
of a standard golf ball. It is an experimentally observed fact that
in observing a circular or arcuate object or design the eyes are
drawn to positions which can be described by reference to a clock
as 3:00 and 9:00 o'clock. This appears to be normal with most
people. Using this invention the player, in looking dowm on the
putter head and golf ball, automatically aligns the golf ball in
relation to the putter head such that a line bisecting the first
arc 11 (at 3:00 o'clock) and the cooperating arc 12 (at 9:00
o'clock) will also bisect the two arcs formed by the right
hemisphere 13 and the left hemisphere 14 of the golf ball 12a,
(also at 3:00 and 9:00 o'clock, as illustrated in FIG. 3). The
player will also automatically line up the putter head and the golf
ball such that the line 15 as shown in FIG. 5 will also bisect the
arcs formed by the near semi-circle 16 and the farther semi-circle
17 of the circle formed by the golf cup 18. The line 15 also passes
through the sweet spot 2 of the front face 9. The latter phenomenon
may be a function of peripheral vision or it may be a visually
retained memory of the position of the golf cup. Whatever the
physiological explanation for the phenomenon may be, it has been
observed to work with most people.
In this preferred embodiment of the present invention, the recess
21 in the rear face 7, as illustrated in FIG. 4, has vertical sides
22 and a contoured bottom 23, which is useful in scooping up the
golf ball out of a cup or off the green. To accomplish this, the
radius of curvature of the first arc must be smaller than the
radius of curvature of the standard golf cup.
A useful function performed by the vertical sides 22 is to assist
the golfer in positioning himself the same way relative the putter
head for each stroke or putt. In looking down, the player adjusts
his stance and his position relative the putter head so that he
sees only the to surface 10 and the contoured bottom 23 and none or
very little of the vertical sides 22. Thus the kinesthetic training
of his putting muscles is supplemented and assisted by mechanical
visual alignment.
Standard putter head materials may be used; however, the
construction of this novel putter head tends to be somewhat bulkier
than ordinary and considerations of weight and comfort may dictate
use of lighter weight materials, such as wood or plastic. It has
been found convenient to scoop out a recess in the rear face into
which a preformed insert 30 can be inserted as may best be seen in
FIGS. 2 and 4.
* * * * *