U.S. patent number 3,804,413 [Application Number 05/343,000] was granted by the patent office on 1974-04-16 for golf club.
Invention is credited to Andrew N. Hrivnak.
United States Patent |
3,804,413 |
Hrivnak |
April 16, 1974 |
GOLF CLUB
Abstract
A golf club structure which enables the practice of the
"square-to-square" method of swinging a golf club. The structure
includes a golf club handle having an indented middle handle
portion onto which is fitted a rotatable sleeve. The sleeve fits
snugly into the indentation and by the use of resin or another
lubricant between the sleeve and the handle, a golf club handle is
constructed to allow one of the golfer's hands to rotate slightly
during the backswing and to accurately rotate in the opposite
direction during the downswing so that the club face is effectively
mechanically positioned upon impact identically with its position
at the start of the backswing.
Inventors: |
Hrivnak; Andrew N. (Yonkers,
NY) |
Family
ID: |
23344249 |
Appl.
No.: |
05/343,000 |
Filed: |
March 20, 1973 |
Current U.S.
Class: |
473/295 |
Current CPC
Class: |
A63B
60/32 (20151001); A63B 53/14 (20130101); A63B
69/3632 (20130101); A63B 60/14 (20151001); A63B
60/20 (20151001) |
Current International
Class: |
A63B
53/14 (20060101); A63b 053/14 () |
Field of
Search: |
;273/193,194,186,81,81.2 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Marlo; George J.
Attorney, Agent or Firm: Yavner; Stanley J.
Claims
1. A golf club comprising a handle, a shaft depending from said
handle and a head defining a club face, said handle including an
upper handle end portion, a lower hand end portion, a mid-portion,
said mid-portion being idented with respect to said lower and upper
end portions, and a sleeve covering said mid-portion, said sleeve
being rotatable relative to said
2. The invention according to claim 1 wherein said lower and upper
handle end portions are co-extensive in outer diameter with the
outer diameter of
3. The invention according to claim 1 wherein said handle is
tapered with said upper and lower end portions and said sleeve
defining a continuous,
4. The invention according to claim 1 wherein said upper and lower
end portions and said sleeve are each covered by a sheathing and
said golf club further comprises a lubricant between said sleeve
and said
5. The invention according to claim 4 wherein said mid-portion is
approximately five inches long and its upper edge is approximately
five
6. The invention according to claim 1 wherein said shaft defines an
upper portion which in turn defines a first bore, the lower end
portion of said handle defines a second bore and a pin extends into
said bores with a press fit to hold said handle and said shaft
together.
Description
This invention relates primarily to golf clubs and more
particularly to the handle structure thereof.
Most progressive professionals during recent years have endeavored
to teach what is commonly referred to as the "square-to-square"
method for particularly iron shots in order to control "hooks" or
"slices" when using such clubs. Basically and briefly, the
"square-to-square" method involves two aspects: firstly, the
straight line relationship of the back of the left hand (only the
right handed golfer shall be considered in this application), left
wrist and forearm, both when gripping the club at the beginning of
the backswing and at the time of impact with the ball; secondly,
the "square" impact position of the club with the ball both at the
beginning of the backswing and at the time of impact with the ball.
The latter concept is a desired alternative to the so-called "open"
position of the club where the club is facing at least partially
away from the golfer and to the "closed" position where the club is
facing at least partially towards the golfer.
The one great drawback of the "square-to-square" method that has
been constantly pointed out by some golf professionals is that a
compensating motion is required during the backswing in order to
provide a true "square " golf club face at the time of impact
relative to the ball. The compensating motion is usually referred
to as "curling under" whereby the last three fingers of the left
hand are curled under the right hand. In this way, the left hand is
given control, but the right hand becomes dominant insofar as
strength is concerned. The rotation of the club by the left hand
during such compensation is such as to rotate the club clockwise
(considering the point of view from the club head to the golfer)
and thus to "close" the club face slightly upon impact with the
ball relative to what it would have been without the compensation.
Without such compensation, it is likely that a slice will result
and there is always the possibility of the right elbow of the
golfer "flying away" from the golfer's body. This latter effect
usually results from an incorrect compensation whereby the right
hand is rolling over the left rather than the left curling under
the right.
All in all, it is generally agreed that "square-to-square" is a
very significant method in improving one's golf game whether the
golfer be a professional or a weekend duffer.
Accordingly, a primary object of the present invention is to
provide a golf club construction which enables the practice of the
"square-to-square" method of swinging a golf club, particularly
with golf iron clubs.
A further and more particular object is to provide a golf club
handle construction which enables the practice of
"square-to-square" without any necessity for "curling under"
compensation by the left hand.
A still further object is to provide a golf club construction
whereby compensation for practicing "square-to-square" becomes
mostly mechanical by means of the golf club handle construction
rather than by any conscious adjustment by the golfer.
Another object of the present invention is to provide a golf club
handle construction and a structure for mating such handles with
existing golf clubs in order to enable an efficient and reliable
replacement system for the handle without replacing the entire golf
club.
These and other objects of the present invention are accomplished
in one preferred embodiment which features a conventional club head
and shaft in conjunction with a handle comprising a shaft extension
portion whose mid-portion is of reduced diameter and whose end
portions are covered by the conventional leather, plastic or rubber
sheathing. Fitted over the mid-portion is a sleeve whose basic
construction includes a metal base covered by a sheathing
comparable to that used on the end portions of the handle. The
outer diameter of the sheathing of the sleeve is such that it is
co-extensive with the outer diameters of the end portions of the
handle. Of course, if the handle is tapered, the sleeve is likewise
tapered so that one continuous outer surface results. Between the
sleeve base and the indented portion of the handle, a resin or
other lubricant is deposited in order to provide a fairly constant
motion for the sleeve. On the other hand, the sleeve is tightly
fitted to the indented portion of the handle so that there is some
friction, yet some smooth resistance to turning.
In an alternative construction of the present invention, the lower
end portion of the handle is fitted with a protruding pin intended
for mating the handle with the top of the golf club shaft. The
mating is accomplished by means of a press fit in order to maintain
the strength of the shaft and yet provide an efficient means for
altering present golf clubs to provide the employment of the
present invention, without the necessity of replacing the entire
golf club.
The above brief description, as well as further objects, features
and advantages of the present invention will be more fully
appreciated by reference to the following detailed description of
the preferred, but nonetheless illustrative, embodiment when taken
in conjunction with the accompanying drawings, wherein:
FIG. 1 is a perspective view illustrating the relative position of
a golf club according to the present invention, the golfer and the
golf ball at the beginning of the backswing;
FIG. 2 is a perspective view similar to that shown in FIG. 1, but
showing the relative positions of the mentioned objects during the
backswing;
FIG. 3 is an enlarged perspective showing the position of the
golfer and a club according to the present invention, near the end
of the backswing;
FIG. 4 is a perspective view similar to that of FIGS. 1 and 2, but
showing the relative positions upon impact;
Fig. 5 is a section view taken along the line 5--5 of FIG. 1 and
showing particularly the handle structure for a golf club according
to the present invention;
FIG. 6 is a section view taken along the line 6--6 of FIG. 5 and
showing particularly the desired relative position of the golfer's
hands, and a club constructed according to the present invention at
the beginning of the backswing using the "square-to-square"
method;
FIG. 7 is a section view taken along the line 7--7 of FIG. 3 and
showing particularly the mechanical rotation of the right hand of
the golfer by use of a golf club constructed according to the
present invention; and
FIG. 8 is a view of a golf club handle and shaft, partially in
section, showing particularly the mating relationship therebetween
enabled by a construction according to an alternative embodiment of
the present invention.
Referring to the drawings, the "square-to-square" method and the
relative positions desired between the ball, club and golfer are
particularly shown in FIGS. 1 through 4. FIG. 1 shows the golfer 10
addressing the ball 12 with his club generally designated 14. Club
14 includes a club face 16 "square" to the ball and the golfer's
lower forearm 18, his left wrist 20, and the back of his left hand
22 in line with the shaft 24 of the golf club 14. This, of course,
according to the "square-to-square" method, should be the same
positions at the time of impact with the ball 12.
The backswing of the golfer 10 is illustrated in FIG. 2. The motion
of the club in FIG. 2 is designated by directional arrow 26 and the
turning of the golfer's shoulders in an upright plane (more like a
ferris wheel than a merry-go-round) is also illustrated.
FIG. 3 shows the position of golfer 10 and his club 14 near the end
of the backswing. It is at this point that the compensating
adjustment by "curling under" the last three fingers 22a, 22b, 22c
of the left hand 22 usually takes place. However, such compensation
becomes unnecessary, or at least mechanically assured, by use of a
golf club constructed according to the present invention. In this
way, a position similar to that shown in FIG. 4 will be assumed
after the backswing is completed and at the time of impact when the
golf club 14 is moved in direction 28 to ball 12. It should be
noticed in FIG. 4 that the "square" position has been again assumed
at the time of impact in two respects: firstly, the club face 16 is
"square" to ball 12 and, secondly, the left forearm 18, the left
wrist 20 and the back of the left hand 22 are in line with shaft 24
of golf club 14.
What enables the positions shown in FIGS. 1 through 4, without the
necessity of "curling under" by the left hand, is the construction
particularly shown in FIG. 5 wherein the golf handle, generally
designated 30 is shown to include a lower end portion 32, an upper
end portion 34 and a mid-portion 36 of reduced diameter. End
portions 32, 34 are covered, as with conventional golf clubs, by a
sheathing material 38. The indented mid-portion 36 is surrounded by
a metal sleeve 40 which is covered by a sheathing material 38'
matching that used for end portions 32, 34. A resin or another
lubricant 42 is inserted between sleeve 40 and handle mid-portion
36, and the sleeve 40 is closely fitted to mid-portion 36 to
provide a smooth but non-free-wheeling rotation of sleeve 40 about
mid-portion 36. The mid-portion of handle 30 is located such that
it accommodates approximately the entire right hand 44 of the
golfer. Such a location would be approximately the middle third of
a normal golf club handle which is approximately 12 to 16 inches
long. In other words, the mid-portion is approximately 5 inches
long and begins about 5 inches from the top of the club.
FIGS. 1, 5 and 6 show various views of the golfer 10 and a club 14
constructed according to the present invention at the time of first
addressing the ball and before beginning the backswing. The club
face 16 is "square" with ball 12, and the position of forearm,
wrist and hand of the golfer are in line with club 14. This is also
the position desired, accoding to the "square-to-square" method at
the time of impact. In order to accomplish such positions, as has
been stated previously herein, the last three fingers 22a, 22b and
22c of the left hand are normally "curling under" the right hand,
but with the difficulties attendant to such motion. By use of a
golf club construction according to the present invention as
particularly shown in FIG. 7, the right hand rotates sleeve 40 in a
counter-clockwise direction 50 thus causing movement of the right
hand as illustrated by directional arrows 52, 54. Such motion
eliminates the necessity for great strength occasioned by the left
hand motion previously described and yet causes the same relative
motion of the end portions of the handle 32, 34 with respect to the
grip that was accomplished by the left hand "curling under." That
is, the left hand being on the top end portion 34 of the handle is
moved clockwise relative to the right hand as it did using "curling
under," but it is the right hand 44 that is actually moving
counterclockwise; and the motion of the right hand is mechanically
enabled by sleeve 40 with an assurance that from the end of the
backswing to impact a clockwise adjustment of the right hand will
be made mechanically to cause its original position as shown in
FIG. 6.
FIG. 8 illustrates the assembled outside view of a handle 30
constructed according to the present invention with its end
portions 32, 34 and its indented mid-portion 36 covered by sleeve
40. The lower end of end portion 32 defines bore 60 into which is
press-fitted pin 62 in order to enable mating of handle 30 with a
shaft 24, likewise defining a bore 64 to accommodate extending pin
62. By such and other mating means, a conventional golf iron club
can be preserved insofar as its shaft and head are concerned and
yet used to accommodate a novel handle according to the present
invention.
Thus, a golf club construction is presented to effectively enable
use of the "square-to-square" method of hitting a golf ball with a
golf club, but without the difficulties usually attendant to
practice of that method.
* * * * *