U.S. patent number 3,833,218 [Application Number 05/341,156] was granted by the patent office on 1974-09-03 for game racket.
Invention is credited to Richard E. Frenkel, Allan E. Schwartz.
United States Patent |
3,833,218 |
Frenkel , et al. |
September 3, 1974 |
GAME RACKET
Abstract
A racket for use in games such as tennis, badminton, squash,
paddle ball, etc. having a head and a handle detachably connected
to said head at a throat. The head comprises a frame defining a
stringing or ball contact area and a throat connected with the
frame. The handle has at least one partially threaded bolt axially
extending the length of said handle, with the threaded portion
extending beyond one end thereof. An internally threaded insert in
carried by said throat for receiving the bolt so that the handle
may be secured to and detached from the head. Guide means are
provided on the handle for engagement with the throat so that the
handle will be properly aligned with the head. Grip expanding means
may be carried within a partially hollow handle so as to vary the
diameter of the handle.
Inventors: |
Frenkel; Richard E. (Scarsdale,
NY), Schwartz; Allan E. (Yonkers, NY) |
Family
ID: |
23336455 |
Appl.
No.: |
05/341,156 |
Filed: |
March 14, 1973 |
Current U.S.
Class: |
473/531 |
Current CPC
Class: |
A63B
60/30 (20151001); A63B 49/035 (20151001); A63B
49/08 (20130101); A63B 60/16 (20151001) |
Current International
Class: |
A63B
49/02 (20060101); A63b 049/08 () |
Field of
Search: |
;273/67R,68,73R,73C,73E,73H,73J,73G,75,8R,8D,81R,82R ;145/61R
;74/551.9 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
325,427 |
|
Feb 1930 |
|
GB |
|
1,310,470 |
|
Oct 1962 |
|
FR |
|
233,544 |
|
May 1925 |
|
GB |
|
710,625 |
|
Jun 1954 |
|
GB |
|
Primary Examiner: Oechsle; Anton O.
Assistant Examiner: Apley; Richard J.
Attorney, Agent or Firm: Dresner; Arthur
Claims
What we claim is:
1. A game racket comprising a head portion and a handle portion,
said head comprising a frame and throat connected to said frame for
joining said handle portion to said head portion, said handle
portion comprising a base and an end face, at least one bolt being
partially threaded at one end thereof and extending the entire
length of said handle, said threaded end extending beyond said end
face, and means for causing rotational movement of said bolt, means
carried by said throat for receiving said threaded bolt so that
said handle may be securely attached to said head portion when said
bolt is rotated in one direction and detached therefrom when said
bolt is rotated in the opposite direction.
2. The game racket according to claim 1 further comprising guide
means for properly aligning said handle with said throat and for
providing rigidity and firmness of structure between said head and
handle, said guide means comprising at least one guide pin axially
extending from said handle and a guide slot in said throat for
receiving said guide pin.
3. A game racket comprising: a head and a handle detachably
connected to said head; said head comprising a frame defining a
stringing area so that the strings are supported by said frame, and
a throat connected to said frame for detachably connecting said
handle to said head; said handle comprising an end face and a base,
a body portion between said end face and said base, at least one
axially extending bore through said body portion, a bolt at least
partially threaded and rotatably carried within said bore, said
bolt extending the length of said handle and having means at one
end located adjacent said base for rotating said bolt, said
threaded portion of said bolt extending beyond said end face, and
guide means extending from said end face for aligning said handle
with said head, said throat comprising a throat body having a base,
an internally threaded insert carried within said throat body for
receiving said threaded bolt so that said handle may be secured to
said head upon rotation of said bolt in one direction and so that
said handle may be detached from said head upon rotation of said
bolt in the opposite direction, and guide slots extending into said
body of said throat for receiving said guide means.
4. The game racket according to claim 3 further comprising a
necked-down portion within said bore forming a shoulder, and means
for urging said handle and head to separate comprising a spring
helically wound about said bolt acting at one end thereof against
said shoulder of said necked-down portion and at its other end
against said throat, and means providing rigidity and firmness of
structure between said head and handle.
5. The game racket according to claim 4 further comprising means
for rotatably journalling said bolt within said bore.
6. The game racket according to claim 5 wherein said guide means
and said means providing rigidity and firmness of structure are
pins axially extending from said handle, one of said guide pins and
one of said guide slots being larger than the other so that said
handle and said head will be properly aligned.
7. The game racket according to claim 6 wherein said insert for
receiving said bolt is carried in a partial bore extending from the
base of the throat into said body.
8. The game racket according to claim 3 wherein said head and
throat are integral with each other.
9. The game racket according to claim 8 wherein said integral head
and throat construction is made of wood.
10. The game racket according to claim 3 wherein said frame is
metal and said throat is molded synthetic material, said throat
being molded about the ends of said frame so that said frame and
throat are securely held together.
11. The game racket according to claim 5 further comprising two
bores axially extending through said body portion, necked-down area
in each of said bores defining a shoulder, an externally threaded
bolt rotatably journalled in each of said bores, and two internally
threaded inserts carried within said throat for receiving said
bolts so as to secure said handle to said head.
12. A game racket comprising a head and a partially hollow handle
detachably connected to said head, said handle having a grip
portion, a threaded bolt carried by said handle axially extending
beyond one end thereof, means carried by said head for receiving
said threaded bolt so that said handle may be secured to said head,
wall plates supporting the external structure of said partially
hollow portion of said handle, and adjustable means carried within
said handle for varying the outside diameter of said grip
portion.
13. The game racket according to claim 12 wherein said mechanism
comprises an externally partially threaded sleeve centrally located
within said handle and axially extending therethrough, an expander
assembly carried on the threaded portion of said sleeve and in
contact with said wall plates, and means for rotating said sleeve
so that said expander assembly will apply pressure to said wall
varying the diameter of said grip.
14. The game racket according to claim 13 wherein said means for
rotating said sleeve comprises at least one slot at one end
thereof, and a tool for engagement with said slot.
15. The game racket according to claim 13 wherein said means for
rotating said sleeve comprises a key pivotally carried at one end
of said sleeve.
Description
BACKGROUND OF THE INVENTION
The present invention relates generally to a racket for use in
playing such games as tennis, badminton, squash, paddle ball and
other such similar games employing the use of a racket which is
generally constructed having a frame or head portion connected at a
neck or throat to a handle or grip portion. Specifically, the
present invention is directed to such a racket in which the handle
is detachably connected to the frame or head so that the racket may
be rendered hybrid.
Over the years rackets for use in such games specifically in the
game of tennis have been made of a variety of materials so as to
provide certain advantages in playing the game. The widely used and
well-known wooden racket is typically formed with the head and
handle portion integral. The handle is formed of a shank extending
from the head. The actual grip of the handle or grip portion is
usually a thickened section of the shank having a hand-gripping
cover such as leather or rubber wrapped about the thickened handle.
The wooden racket presents several disadvantages to the user. These
include possible warping of the frame and breaking the racket at
the neck area or about the frame.
In order to overcome the disadvantages of the wooden racket the
modern day metal racket was developed. These rackets are typically
made of aluminum, aluminum alloys, steel, etc., and provide the
required durability and tend to be lighter in weight than the
wooden racket. The new metal rackets have met with significant
commercial success -- however these, like the wooden rackets, are
typically constructed with the head and handle portions being
integrally formed from a frame having an extended shank. The actual
grip of the handle may be formed by a built-up area on the shank to
form a thickened portion similar to the thickened portion of the
well-known wooden racket.
In any case, whether the racket be made of wood or whether it be
made of a metal, metal alloy, or any other material, the grip
portion is formed integrally with the entire racket. Should a
player decide to alter the type of grip which he chooses to use or
to change the size of the grip or its weight, he would be required
to obtain an entirely new racket at considerable expense, rather
than simply a new grip. Further, in marketing the typical integral
tennis racket an enormous stock of rackets, having different size
grips, type of grips, lengths, etc. has to be maintained by the
sporting goods supplier so that the purchaser may have his choice
of grip.
Many people prefer the wooden frame racket, or may wish to play
with a wooden racket only temporarily. They are required to
purchase an entirely new racket. The change to a wooden racket also
requires that the player become accustomed to a new grip which is
an integral part of the new racket.
The player may purchase a new racket for a variety of reasons.
Tennis rackets are provided with strings carried by the frame or
head portions which are usually either gut or nylon. Both of these
materials provide certain advantages under different playing
conditions and a player for one reason or other may decide to play
with nylon under one set of conditions while choosing to play with
the gut stringing under another set of conditions. In order to
satisfy this particular player's needs he would have to be supplied
with two entirely separate tennis rackets, each having the
different stringing material. Again this is a situation which
requires the player to become accustomed to using a different grip
with each tennis racket. A tennis player may also choose to
purchase a new racket simply because the head portion of his racket
has become seriously damaged and requires replacement. Again, a new
tennis racket with a new grip will be required.
The size, weight distribution, "feel" and overall adaptability to a
player's peculiar hand of a particular grip becomes a factor upon
which a player becomes accustomed and relies on. Any change or
alteration in these factors tends to require a period of
adjustment. It is therefore most desirable if a player can rely on
the security of a particular grip and the knowledge that he can use
"his" grip no matter what type of head he chooses to use.
For these reasons, tennis rackets having a detachable grip or
handle portion, in order to provide an interchangeability feature
have been proposed so that a single grip can be used with a variety
of head or frame portions. This would allow a merchant to stock a
wide variety of grips to meet the various size and weight needs
while only one or two basic frames which may be used with the grip
need be stocked. The prior attempts at tennis rackets having
interchangeable grips however, does not appear to have met with any
appreciable commercial success. Probable reasons for such failure
appears to be the fact that the interchangeability feature is
specifically limited to changing the type of grip which is used on
a particular tennis racket rather than changing the type of head or
frame portion which may be used with a particular grip. In the
prior devices the frame or head portion is still made integral with
an extended shank portion even though the actual grip which may be
attached to the shank is interchangeable with other size grips. The
merchant is still required to stock a large supply of handle or
grip portions. This approach overlooked the desirability of
providing a variety of head portions made of various materials such
as the well-known wood or metal rackets so as to be interchangeable
with the particular grip. Further, various head portions being
strung with different materials, whether it be gut, nylon, or
metal, can also be provided for use with a particular grip. Also,
if a player should require or desire to play with a grip having a
different size he would have to turn to an entirely new grip or
handle having the required size.
Accordingly, it is a general object of the present invention to
provide a racket for use in playing such games as tennis,
badminton, squash, paddle ball, etc. in which the grip or handle
portion is detachable from the frame or head portion at the throat
or neck area of the racket thus providing an interchangeability
feature.
Another object of the invention is to provide such a racket so that
handles having different lengths may be used with the same head for
use by children, adolescents or adults.
It is a further object of the present invention to provide a tennis
racket of the aforementioned type in which a hybrid tennis racket
having a head portion made of one type of material may be combined
with a grip or handle portion made of a different type of material
so as to provide the various advantages of each.
It is still a further object of the present invention to provide a
racket having a detachable handle in which the means for attaching
the handle to the head portion provides rigidity and firmness of
structure between the handle and frame and proper alignment between
these elements.
A still further object of the present invention is to provide such
a tennis racket in which the throat portion of the racket provides
an interface and connecting element between the head and handle
portions.
A further object is to include an extended screw element running
the length of the grip or handle for providing a means of secure
attachment between the handle and the head portion.
Another object of the invention is to provide a tennis racket which
has means for varying the size of the actual grip so that a player
may continue using the same grip but altering its size to suit his
or another's need.
Other objects, advantages and features of the invention will become
more apparent from the following detailed description of the
invention in connection with the accompanying drawings in
which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded and sectioned elevational view of one
embodiment of the present invention;
FIG. 2 is also an exploded and sectioned elevational view showing
another embodiment of the present invention;
FIG. 3 is a plan view of one type of tennis frame which may be used
with the detachable handle shown in FIG. 1;
FIG. 4 is a plan view of another type of tennis frame and throat
which may be used with the detachable handle shown in FIG. 1 or
FIG. 2;
FIG. 5 is an elevational view partly broken away and sectioned
showing a further feature of the invention;
FIG. 6 is a bottom view of the handle shown in FIG. 5 as viewed in
the direction of arrow VI;
FIGS. 7 and 8 are perspective views of alternative features of the
invention; and
FIG. 9 is a sectioned elevational view showing an alternative to
one of the features shown in FIG. 5.
DESCRIPTION OF THE INVENTION
Referring now more in detail to the accompanying drawings, FIG. 1
shows in an exploded view one embodiment of a hybrid tennis racket
as envisioned by the present invention. The combination racket
includes basically two components, to wit a handle portion 10 and a
head portion 11. The head 11, an example of which is shown in FIG.
4 is formed of a throat 12 and a frame 13. The frame 13 may be made
of aluminum, steel, chrome, or other lightweight metal circularly
or elliptically shaped terminating in the throat 12 at ends 14, and
having a bridge element 15 so as to complete the uniform shape of
the head which generally defines a stringing area. The strings 16
are supported by the frame in any of a variety of well-known
manners, none of which form part of the present invention. The
strings 16 may be either the well-known nylon, gut or metal.
The frame 13 may further be constructed of plastic, fiberglass,
wood or any other material which is found suitable for meeting the
durability and response requirements of playing the game in which
the racket is to be used. The throat portion 12, which may be
either formed integrally with the frame as shown in FIG. 3, or
separately secured to the frame 13 as shown in FIG. 4 may likewise
be made of any suitable material. It is suggested however, that one
most suitable combination is to form the throat 12 of a molded
plastic in which the frame 13, preferably made of metal tubing is
secured to the throat during the molding process. FIG. 1 shows the
throat 12 as being plastic, fiberglass or other synthetic material
with the frame 13 embedded within the molded throat. The head shown
in FIGS. 1 and 4 therefore provides the player with all of the
advantages of the successful metal racket in which the frame 13 is
formed of suitable metal tubing. When a player decides to use such
a metal racket this type of head is available. FIG. 3, on the other
hand, shows a head portion 17 formed completely of wood having a
wooden frame 13 and an integrally formed wooden throat 18.
Either of the head portions, such as shown in FIGS. 3 and 4, may be
used with the separate handle 10 such as shown in FIG. 1. The
handle may also be made of a variety of metals. The handle shown in
FIG. 1 is shown to be made of wood so as to provide the damping
advantages inherent in this material. The handle 10 generally
comprises the handle body 19 and a grip area 20. As previously
noted, the body shown in FIG. 1 is made of wood. A conventional
leather, plastic or rubber grip 21 is wound about the grip area of
the body and may be covered with a reusable and disposable plastic
or polyethelene covering 22 so as to protect the actual grip
material.
In FIG. 1, the handle body 19 has an an axially extending central
bore 23 extending the entire length of the handle body. A
necked-down portion 24 forming shoulders 25 and 35 is located in
the upper part of the bore 23. A bolt 26 having a partially
threaded portion 27 is carried within the bore 23 and may be
journalled between bearings 28 which are preferably Teflon O-rings
having a square cross-sectional area. The end of the bolt 26 which
is remote from the threaded portion 27 has a slotted head 29 which
is located near the base 30 of the handle body. The head 29 is
slightly recessed into the bore 23 so as not to protrude beyond the
base of the handle. A flange (or pin) 36 is carried on the bolt for
locating the bolt within the bore preventing axial movement in a
direction away from the head of the bolt by engagement with
shoulder 35. End face 31 of the handle body is provided with a pair
of guide pins 32 and 33. One of the guide pins 32 may have a
somewhat smaller diameter than the other guide pin 33 for proper
alignment into the throat portion 12 of the head 11. A tension
spring 34 is helically wound about the bolt 26 and bears at one end
thereof against a shoulder 25 formed by necked-down area 24. The
guide pins 32 and 33 may be conveniently secured to the handle body
preferably by screwing in place.
The throat 12 of the head portion is provided with a pair of guide
slots 42 and 43 so as to receive the guide pins 32 and 33 of the
handle. Guide slot 42 has a diameter slightly less than guide slot
43 so as to accommodate guide pin 32 and guide slot 43 having a
diameter for receiving guide pin 33. In this manner the head and
handle portions can be secured to one another with proper and
consistent alignment so that the opposite faces of the head will
always be aligned with corresponding parts of the handle.
A partial bore 44 extends from the base 45 of the throat
terminating at 46 located approximately two-thirds of the depth of
the throat. The bore 44 is axially and centrally located and is
aligned with bore 23 of the handle when the handle is secured to
the throat. An internally threaded metal insert 47 is secured at
the end of the partial bore 44 for receiving the threaded end 27 of
bolt 26. The insert 47 may be secured in place within the partial
bore as by wedging or during the molding process of the throat.
Partial bore 44 and guide slots 42, 43 may either be formed during
molding or by a machining operation subsequent to molding.
In operation, in order to secure the handle 10 to the head 11, bolt
26 is inserted into partial bore 44 of the throat, guide pins 32
and 33 being aligned so as to be inserted into guide slots 42 and
43 respectively. Threaded portion 27 is then screwed into insert 47
by turning the bolt 26 by means of a tool applied to the slotted
end 29 at the base of the handle. Alternative means for causing
rotation of the bolt may be carried by the bolt itself. FIG. 7
shows such a means as comprising bolt removal key 98 pivotally
carried at the end of bolt 26. When not in use the key may be
recessed within bore 23. The end of the bolt 26 may also have a tab
area 100 as shown in FIG. 8 so as to carry a key 99 of the type
shown in FIG. 8.
The other end of spring 34 bears against end 48 of insert 47 so as
to provide proper tension between the throat and the handle and so
as to urge the handle 10 away from the throat 12 thereby
facilitating the disassembling operation, and together with the
pins and slots, to provide proper rigidity and firmness of
structure. Disassembly is accomplished by unscrewing the bolt from
the insert 47 by means of applying the same tool to the slotted end
29 of the bolt. The bolt 26 is screwed into the insert 47 until
base 45 of throat 12 and end face 31 interface in a smooth
transition. The bolt 26 and guide pins 32 and 33 are sufficiently
long so as to provide adequate stability between the head and
handle body. The exact length of these elements and the degree of
depth of insertion is determined by the relative size of the throat
portion and may vary between one and three inches.
A truly hybrid tennis racket is formed by attaching the handle 10
as shown in FIG. 1 to the head 11. The handle 10 being made of wood
provides all the advantages of a wooden racket while all the
advantages of a metal frame as provided by the head 11 are combined
with it. Any number of other combinations of hybrid tennis rackets
are also obtainable in this manner. For example, the wooden handle
10 may be combined with a totally wooden frame 17 such as shown in
FIG. 3. The throat area 18 of the wooden frame 17 will similarly
have a metal insert 47 located in the partial bore 44 for receiving
the threaded end 27 of bolt 26, guide slots 42 and 43 provided in
the throat 18 of the wooden frame for receiving the guide pins 32,
33.
A further embodiment of the hybrid tennis racket is shown in FIG.
2. In this embodiment, the throat portion 52 has two guide slots 53
and 54 which are aligned with the ends 14 of the metal tubular
frame 13 of the head 11. The ends 14 of frame 13 are internally
threaded at 55 and 55' as shown in FIG. 2. Alternatively internal
threaded metal inserts may be carried at the ends 14 of the tubular
frame 13 as in the embodiment of FIG. 1. The metal inserts may be
secured in place by press fitting or by set screws which may be
provided on an outside surface of the tubular frame 13 at the ends
14 and secured so as to secure the metal inserts in place prior to
molding the throat 52 with the ends of the frame embedded in the
throat.
The handle 10 for use with the head 11 shown in FIG. 2 comprises a
handle body 56 which may be made of wood, as is shown in FIG. 1, or
may be made of metal such as cast aluminum or magnesium as shown in
FIG. 2. Axial bores 57 and 58 are provided in the handle body 56
and accommodate bolts 59 and 60 respectively. Bolts 59 and 60 have
partially threaded ends 61 and 62 respectively arranged for
engagement with internally threaded ends 55 and 55' or inserts
carried by the tubular metal frame 13. Bolts 59 and 60 have slotted
ends 63 and 64 respectively at the base 30 of the handle which may
be either slightly recessed at the base or arranged flush therewith
as shown in FIG. 2. The key and bolt arrangements shown in FIGS. 7
or 8 may be used with bolts 59 and 60 instead of slots 63 and 64
respectively. Springs 65 and 66 are carried by the ends of the
bolts 59 and 60 respectively and act at one end thereof against
shoulders 67 and 68 respectively provided by necked-down area 69
and 70 within bores 57 and 58 respectively. Bolts 59 and 60 carry
flanges 37 and 38 respectively which engage shoulders 39 and 40
respectively of necked-down areas 69 and 70 respectively to prevent
axial removal of the bolts when the handle is secured to the
head.
During assembly the threaded ends of bolts 59 and 60 are inserted
into guide solts 54 and 53 and secured in metal inserts 55 of the
tubular frame 13 by turning the bolts 59 and 60 at the slotted ends
63 and 64 or by keys 98 or 99. In this manner a secure connection
of the handle to the head is accomplished by direct securement of
the bolts through the handle to the frame 13. The bolts are screwed
into the inserts until base 45 of the throat 52 and end face 31 of
the handle body 56 interface in a smooth transition.
A further advantageous feature of the present invention is to
provide the handle 10 with an expandable grip so that a single grip
can be used for different players who are accustomed to different
sized grips or may be used by the same player who wishes to vary
the size of his grip. In FIG. 5 there is shown a handle 10 of the
type shown in FIG. 1 having a body portion 71 which is solid up to
body base 72 and is provided with an axial central bore 73 which
has a necked-down portion 74 forming a shoulder 75 against which
spring 34 bears. The remainder of the handle 10 extending from the
base of body 71 to the base of the handle 80 is substantially
hollow enclosed by movable wall plates 76 which may either form a
cylinder so that the handle has a circular cross-section or may be
formed into the familiar octagonal cross-section of the typical
tennis racket handle. A hollow metal sleeve 77 is centrally and
axially arranged through the handle 10 accommodated within the bore
73 of body 71 and in a bore 78 of base insert 79. The sleeve 77 has
an externally threaded portion 81. The bolt 26 having a partially
threaded end section 27 is carried within the sleeve 77 journalled
between the teflon O-ring bearings 28 as described with reference
to FIG. 1. In the embodiment shown in FIG. 5 there are four such
O-rings rather than two as shown in FIG. 1. In order to provide
rigidity and further substance to the hollow handle portion, foam
or sponge rubber packing 82 is provided. An expander assembly is
carried on the threaded portion of the sleeve 77 for varying the
external diameter of the grip. The assembly comprises at least two
flex elements 83 and 84 secured such as by riveting or spot welding
at 85 and 86 respectively to the wall plates 76. The flex elements
are preferably made of spring steel and are connected at one end to
a slide ring 87 arranged for sliding movement over the sleeve 77,
and at their other end to an internally threaded ring 88 which is
in engagement with the external threads 81 carried by sleeve
77.
The sleeve 77 is provided with means for causing rotation thereof.
One such means is shown in FIG. 5 with the sleeve having
diametrically opposed slots 89 and 90 located at the end of the
sleeve adjacent base 80 of the handle. Rotation of the sleeve 77
can be effected by use of a tool such as 91 shown in FIG. 6
designed for engagement with slots 89 and 90. Another means for
causing rotation of sleeve 77 is shown in FIG. 9. The sleeve 77 has
an enlarged diameter portion 101 and an adjustment key 102 carried
thereon by pins 103. The base body member 79 is provided with
recess 104 in which the key 102 may be stored when not in use. The
bolt 26 may also be provided with key 98.
Upon rotation of the sleeve 77, threaded ring 88 will be caused to
be axially moved along sleeve 77 by engagement with threads 81
thereby causing the flex elements to be either pulled together or
spread apart depending upon the direction of rotation of the sleeve
(i.e. rings 87 and 88 moved away from or toward each other). Upon
spreading of the flex elements 83 and 84 (i.e. rings 87 and 88
moving toward each other) wall plate 76 will be caused to expand
thus enlarging the overall diameter of the grip.
FIG. 6 shows the bottom of the handle 10 of FIG. 5 in which a
separate tool is used for adjustment instead of the keys shown in
FIG. 9. The slotted head 29 of bolt 26 is accessible through bore
78 of base body member 79. Slots 89 and 90 are likewise accessible
through bore 78. Tool 91 may be accommodated within an aperture 92
and secured to the base by a flexible laniard 93. The aperture 92
may be closed by cover 94 pivotably connected to the base 80 at 95.
A name plate identification tag 96 may also be accommodated on the
base 80.
The grip of the handle 10 of FIG. 5 may be provided with the rubber
covering 21 as in FIGS. 1 and 2 as well as with the cover 22.
It should be apparent from the foregoing that a useful and novel
hybrid tennis racket is provided by the present invention in which
a head portion may be securely connected to a detachable handle
portion permitting the use of a head formed of one material with a
handle formed of a different material and which may further include
a means for varying the size of the grip.
While the invention has been described and illustrated with respect
to certain embodiments which give satisfactory results, it will be
understood by those skilled in the art, after understanding the
purpose of the invention that various other changes and
modifications may be made without departing from the spirit and
scope of the invention, and it is therefore intended in the
appended claims to cover all such changes and modifications.
* * * * *