Information
-
Patent Grant
-
6245178
-
Patent Number
6,245,178
-
Date Filed
Tuesday, July 20, 199925 years ago
-
Date Issued
Tuesday, June 12, 200123 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Chapman; Jeanette
- Varma; Sneh
Agents
-
CPC
-
US Classifications
Field of Search
US
- 156 187
- 156 195
- 156 191
- 156 215
- 156 293
- 156 294
- 156 428
- 156 423
- 156 285
- 156 176
- 156 86
- 156 450
- 029 458
- 029 450
- 029 460
- 029 514
- 029 335
- 029 33 Q
- 427 3855
- 427 3899
- 427 3934
- 473 300
-
International Classifications
-
Abstract
An automated process and apparatus for installation of a handgrip on a golf club shaft is disclosed herein. The handgrip is installed on the golf club shaft in a dry state. The present invention does not utilize solvents, lubricants or the like for the installation of the handgrip onto the golf club shaft. The apparatus has a taping mechanism for automatically wrapping a double-sided tape onto the butt end of the golf club shaft. The apparatus also has a gripping mechanism for preparing a grip for automated installation on a shaft while in a dry state. The apparatus also has a shaft shuttle mechanism for transferring the golf club shaft from the taping mechanism to the gripping mechanism. The gripping mechanism has means for expanding the handgrip prior to placement on the butt end of the golf club shaft.
Description
CROSS REFERENCES TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to installation of a grip on a golf club shaft. More specifically, the present invention relates to a method and apparatus for automatically placing a handgrip on a golf club shaft without the use of a solvent.
2. Description of the Related Art
Grips have been used on golf clubs to provide a golfer with a greater ability to grasp the golf club during a swing. Grips were used as early as the 1700s when sheepskin grips were the choice of golfers. In the 1800s, leather grips began to appear on a golf clubs, and soon became the dominant grip. In the 1900s, numerous rubber grips were developed mainly by rubber manufacturers. Presently, grips are composed of synthetic rubbers, plastics, and the like.
Handgrips are usually placed on the butt end of a golf club shaft at the club manufacturer. This process has for the most part been a manual process, with very little automation. A golf club shaft is manually wrapped with a double-sided tape at its butt end. Next, a solvent or lubricant is sprayed into the hollow interior of the handgrip, through an open end, in order to place the handgrip over the wrapped butt end without deterring from the adhesiveness of the tape. The handgrip is pulled over the shaft until the closed end of the handgrip is flush with the butt end of the shaft. The solvent eventually evaporates allowing for the tape to adhere to the surface of the hollow interior of the handgrip. Thus, it is obvious that this is a highly repetitious process may lead to injuries to some laborers unless remedial steps are taken by the manufacturer. Further, the use of certain solvents and lubricants may be an environmentally unfriendly means of manufacturing. Yet further, the spraying of a solvent or lubricant is an undesirable step which increases the production time.
The golf industry, and those associated with it, have attempted to automate some of the processes to increase production and lessen injury to laborers. One example is Hsu, U.S. Pat. No. 4,899,428 (“the '428 Patent”) for a Golf Club Handle Sleeve Assembling Mechanism. The '428 Patent discloses an assembling mechanism that includes slidable tables, triple acutators with hooks for expanding the front end of the handgrip, an air blower for blowing air into the rear of the handgrip and a fluid hose for delivering a solvent or lubricant to the handgrip for facilitating insertion of the shaft into the handgrip. Another example is Vald'via, U.S. Pat. No. 5,407,026 (“the '026 Patent”) for a Golf Club Grip Installing Apparatus. The '026 Patent discloses the use of a grip lubricating device and a golf club shaft lubricating device. The '026 Patent allows for a controlled amount of lubricant to be applied for facilitated insertion of the shaft into the grip. Another example is Cresse et al., U.S. Pat. No. 5,429,706 (“the '706 Patent”) for a System And Method For Installing A Hollow Handgrip Over An Elongated Shaft End. The '706 discloses a system and method for applying a liquid adhesive to an interior surface of the handgrip in substitution for the use of tape on the shaft to adhere the grip. The '706 patent inflates the handgrip prior to insertion of the shaft into the grip. Another example is U.S. Pat. No. 5,870,815 (the '815 Patent”) for an Apparatus And Method For Aligning A Golf Club For Attaching A Handle Grip. The '815 Patent discloses an alignment assembly for positioning of a club head attached to a shaft prior to placement of a handgrip on the butt end of the shaft.
The above-mentioned patents fail to provide a fully automated installation of handgrips to golf club shafts, and also still require the need for a solvent or lubricant. Further, the above-mentioned patents require that a club head is attached to the shaft or that shaft is blocked. There still remains a need for a more automated method, one that can grip an open shaft, and one that does not utilize solvents or lubricants.
BRIEF SUMMARY OF THE INVENTION
The present invention fulfills the needs of the golf industry by providing a better automated process and apparatus for installation of a handgrip onto a golf club shaft. The present invention is able to accomplish this while maintaining the handgrip and the butt end of the golf club shaft in a dry state. That is, the present invention does not utilize solvents, lubricants or the like for installation of a handgrip on a golf club shaft.
One aspect of the present invention is a process for automatically installing a handgrip on a golf club shaft. The handgrip has a hollow interior with a first diameter. The process generally includes maintaining a butt end of a golf club shaft and the hollow interior of the handgrip in a dry state throughout the installation process. The next step of the process is flowing a gaseous medium into the handgrip to expand the hollow interior of the handgrip from the first diameter to a second diameter. The next step is mating the butt end of the golf club shaft with the expanded hollow interior of the handgrip.
The process may also include expanding an open end of the handgrip with a plurality of jaws prior to mating the butt end of the golf club shaft with the expanded hollow interior of the handgrip. The process may also include wrapping a double-sided tape over the butt end of the golf club shaft. The wrapping includes adhering a middle region of the tape to the butt end, then adhering a first side region of the tape to the butt end, and then adhering a second side region of the tape to the butt end with an end portion of the second side region of the tape overlapping the first side region. The process may also include orienting the handgrip for placement on the butt end of the shaft prior to flowing the gaseous medium into the handgrip. The step of mating the butt end of the golf club shaft with the hollow interior of the handgrip may include moving the hollow interior of the handgrip over the butt end of the golf club shaft. Alternatively, the step of mating the butt end of the golf club shaft with the hollow interior of the handgrip may include inserting the butt end of the golf club shaft into the hollow interior of the handgrip. The process may also include moving the plurality of jaws forward for release from the open end of the handgrip after mating the butt end of the golf club shaft with the hollow interior of the handgrip. The plurality of jaws may include six jaws for engaging with and expanding the open end of the handgrip.
Another aspect of the present invention is an apparatus for automatically applying a handgrip to a butt end of a golf club shaft. The apparatus includes a frame, a tape mechanism, a handgrip assembly and a shaft movement mechanism. The tape mechanism is mounted to the frame. The handgrip assembly is also mounted to the frame. The handgrip assembly has an air injector disposed on a handgrip receiving sleeve, a plurality of jaws movable from a closed position to an expanded position, and a drive mechanism. The shaft movement mechanism is capable of movement from a position on the frame in-line with the tape mechanism to a position on the frame in-line with the handgrip assembly.
The apparatus may also include a handgrip orientation device disposed on the handgrip assembly. The handgrip orientation device is capable of orienting a handgrip to a predetermined position. The tape mechanism of the apparatus may include a tape dispenser, a tape cutter disposed in proximity to the tape dispenser, a tape roller rotatable about a fixed axis, and a shaft rotation roller disposed in relation to the tape roller. The shaft movement mechanism of the apparatus may include a plurality of shaft guides for retention of a shaft therein during application of a handgrip to the shaft.
The apparatus may include a shaft orientation device mounted on the frame and in-line with the handgrip assembly. The shaft orientation device includes a shaft aligner and a second air injector.
Another aspect of the present invention is an apparatus for automatically applying a handgrip to a butt end of a golf club shaft while maintaining the handgrip and the butt end of the golf club shaft in a dry state. The apparatus includes a frame, means for automatically applying a double-sided tape to the golf club shaft, means for receiving and orienting a handgrip, means for expanding a handgrip for placement on the butt end of a golf club shaft while in a dry state, and means for moving a shaft from a position on the frame in-line with the tape means to a position on the frame in-line with the expanding means. The tape application means is mounted to the frame, and the receiving and orienting means is mounted on the frame.
The apparatus may also include means for receiving a shaft on the apparatus. The apparatus may also include means for orienting a shaft placed in the shaft moving means. The apparatus may also include means for moving a handgrip over a shaft disposed on the shaft moving means.
It is a primary object of the present invention to provide a process and apparatus for applying a handgrip to a golf club shaft while maintaining the handgrip and the shaft in a dry state.
It is an additional object of the present invention to provide a process and apparatus for automatically applying a handgrip to a golf club shaft.
Having briefly described the present invention, the above and further objects, features and advantages thereof will be recognized by those skilled in the pertinent art from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
There is illustrated in
FIG. 1
a top plan view of the automatic grip installation apparatus of the present invention.
There is illustrated in
FIG. 2
an isolated view of a golf club handgrip that may be utilized in conjunction with the present invention.
There is illustrated in
FIG. 3
an isolated view of an ungripped golf club shaft with a head thereon that may be utilized in conjunction with the present invention.
There is illustrated in
FIG. 4
is an isolated side view of an ungripped golf club shaft engaged within the tape mechanism of the apparatus of the present invention at a first point in time.
There is illustrated in
FIG. 5
is an isolated side view of an ungripped golf club shaft engaged within the tape mechanism of the apparatus of the present invention at a second point in time.
There is illustrated in
FIG. 6
is an isolated top plan view of an ungripped golf club shaft engaged within the tape mechanism of the apparatus of the present invention at an initial adhesion of the tape to the shaft.
There is illustrated in
FIG. 6A
a front cross-sectional plan view of FIG.
6
.
There is illustrated in
FIG. 7
is an isolated top plan view of an ungripped golf club shaft engaged within the tape mechanism of the apparatus of the present invention at a later adhesion of the tape to the shaft.
There is illustrated in
FIG. 7A
a front cross-sectional plan view of FIG.
7
.
There is illustrated in
FIG. 8
is an isolated top plan view of an ungripped golf club shaft engaged within the tape mechanism of the apparatus of the present invention at a final adhesion of the tape to the shaft.
There is illustrated in
FIG. 8A
a front cross-sectional plan view of FIG.
8
.
There is illustrated in
FIG. 9
an isolated top plan view of the shaft orientation mechanism of the apparatus of the present invention.
There is illustrated in
FIG. 10
an isolated rear view of the grip mechanism of the apparatus of the present invention.
There is illustrated in
FIG. 11
a top plan view of the grip mechanism of the apparatus of the present invention.
There is illustrated in
FIG. 12
a front view of the jaw assembly of the grip mechanism of the apparatus of the present invention.
There is illustrated in
FIG. 13
an isolated front view of an alternative embodiment of the jaw assembly of the apparatus of the present invention engaging a handgrip.
There is illustrated in
FIG. 14
an isolated front view of a jaw of the apparatus of the present invention.
There is illustrated in
FIG. 15
an isolated top plan view of a jaw of the apparatus of the present invention.
There is illustrated in
FIG. 16
an isolated side view of a jaw of the apparatus of the present invention.
There is illustrated in
FIG. 17
a top plan view of the grip mechanism with a handgrip being installed on a golf club shaft.
There is illustrated in
FIG. 18
a top plan view of the grip mechanism immediately after a handgrip has been installed on a golf club shaft.
There is illustrated in
FIG. 19
a schematic side view of a handgrip being installed on a golf club shaft at a first point in time.
There is illustrated in
FIG. 20
a schematic side view of a handgrip being installed on a golf club shaft at a second point in time.
There is illustrated in
FIG. 21
a schematic side view of a handgrip being installed on a golf club shaft at a third point in time.
There is illustrated in
FIG. 22
a schematic side view of a handgrip installed on a golf club shaft immediately after installation.
DETAILED DESCRIPTION OF THE INVENTION
The apparatus and method of the present invention is directed at a installing a hand grip onto a golf club shaft while maintaining the handgrip and the butt end of the golf club shaft in a dry state. As shown in
FIG. 1
, the automatic grip installation apparatus of the present invention is generally designated
30
. The apparatus
30
generally includes a frame
32
, a shaft shuttle mechanism
34
, a taping mechanism
36
and a grip mechanism
38
. The shaft shuttle mechanism
34
, the taping mechanism
36
and the grip mechanism
38
are all mounted to the frame
32
at specific locations relative to each other. The taping mechanism
36
and the grip mechanism
38
are adjacent each other at one end of the frame
32
while the shaft shuttle mechanism
34
is mounted at the other end of the frame
32
. The shaft shuttle mechanism
34
will transport a shaft
40
from one position in-line with the taping mechanism
36
to another position in-line with the grip mechanism.
Shafts are fed to the apparatus
30
from a source through conventional means such as a conveyor or the like. The shaft
40
is placed on the shaft shuttle mechanism
34
and transported to the taping mechanism
36
for placement of tape on the shaft
40
. The taped shaft
40
is then transported by the shaft shuttle mechanism to a position in-line with the grip mechanism for installation of a handgrip
42
thereon (without the need of a solvent) and orientation of the shaft
40
by a shaft orientation device
44
.
As shown in
FIG. 2
, a handgrip
42
generally has an open end
46
that allows access to a hollow interior
48
. Opposite of the open end
46
is a closed end
50
that has an aperture
52
for additional access to the hollow interior
48
of the handgrip
42
. On a body
54
of the handgrip
42
may be an alignment notch
56
for proper alignment of the handgrip
42
on the shaft
40
. Although one type of handgrip
42
has been illustrated and described, those skilled in the pertinent art will recognize that most if not all types of handgrips may be utilized in conjunction with the present invention.
As shown in
FIG. 3
, the shaft
40
has a golf club head
58
attached thereon at a tip end
60
of the shaft
40
. The tip end
60
is inserted through a bore
62
of the golf club head
58
. The handgrip
42
is placed over a butt end
64
of the shaft
40
. At the butt end
64
is an opening
66
to a hollow interior
68
of the shaft
40
. Generally, the butt end
64
has a greater circumference than the tip end
60
. The shaft
40
may be composed of a graphite material, a steel material or the like. The shaft may come in various lengths depending on the golf club. The golf club may be an iron, a wood, a driver or a putter. Although one type of shaft
40
has been illustrated and described, those skilled in the pertinent art will recognize that most if not all types of shafts may be utilized in conjunction with the present invention.
The application of a double-sided tape (adhesive on both sides) to the butt end
64
of a shaft
40
at the taping mechanism
36
is illustrated in
FIGS. 4-8
(including
6
A,
7
A and
8
A). A shaft
40
is positioned at the taping mechanism
36
by the shaft shuttle mechanism
34
. The butt end
64
of the shaft
40
is positioned in relation to a length of tape
70
that is dispensed from a roll of tape
72
on a tape dispenser
74
. The tape
70
is positioned by a tape shuttle
76
over the butt end
64
of a shaft
40
. The tape shuttle
76
also assists in the removal of a backing
78
of the double-sided tape
70
. The tape shuttle
76
moves from an extended position as shown in
FIG. 4
to a retracted position as shown in FIG.
5
.
The tape
70
is partitioned at a tape cutting assembly
80
. The tape cutting assembly
80
generally includes a blade
82
and a drive mechanism
84
. The drive mechanism
84
may be any conventional means such as a pneumatic cylinder or a servomotor. The blade
82
cuts the tape
70
to a predetermined length that has a portion extending further than the butt end
64
of the shaft
40
. However, a tape roller
86
first presses the tape
70
against the butt end
64
of the shaft
40
for adhesion of one side of the tape
70
thereto. Then, the blade
82
cuts the tape to a predetermined length. The tape roller
86
may have a silicone rubber surface which does not adhere to the tape
70
, thus allowing for the application of one side of the tape
70
to the butt end
64
of shaft
40
while maintaining the adhesiveness of the other side of the tape
70
. The tape roller
86
may alternatively have a surface composed of a material with similar non-adhesive properties. During the application of the tape to the butt end
64
of the shaft
40
, the shaft
40
is held in place by a plurality of shaft guides
90
a-d,
and the shaft is rotated by a plurality of shaft rollers
88
a-b.
The application process is generally performed in following steps. First, as shown in
FIGS. 6 and 6A
, the middle
70
a
of the length of the tape
70
is applied to butt end
64
of the shaft
40
. Next, the blade
82
cuts the tape to the predetermined length. Next, as shown in
FIGS. 7 and 7A
, a first side region
70
b
of the length of the tape
70
is applied by rotating the shaft
40
by the shaft rollers
88
a-b.
In a preferred embodiment, a shaft
40
is rotated approximately one-hundred ninety degrees. The shaft
40
is rotated in a reverse direction, and a second side region
70
c
of the tape
70
is applied to the butt end
64
of the shaft
40
which an end portion of the second side region
70
c
overwrapping an end portion of the first side region
70
b.
A wheel, not shown, larger than the tape roller
86
and located in proximity to a butt end of the tape roller
86
, rolls the end of the tape
70
over the butt end
64
of the shaft
40
to provide a leading edge to assist in placing the handgrip
42
over the shaft
40
. The tape roller
86
applies the tape
70
at a uniform pressure to conform the tape
70
to possible uneven surfaces of the shaft
40
.
Once the butt end
64
of the shaft
40
is wrapped with the tape
70
, the wrapped shaft
40
is transported to a position in-line with the grip mechanism
38
. In a preferred embodiment, the transport of the shaft
40
is along a horizontal plane. However, the transport of the shaft
40
may take other non-horizontal paths. In addition to being in-line with the grip mechanism
38
, the shaft
40
is also in-line with the shaft orientation device
44
which is opposite the grip mechanism
38
.
As shown in
FIG. 9
, the shaft orientation device
44
generally includes a shaft gas injector
92
having a tip
94
, and an optional head to shaft alignment member
96
. The shaft orientation device
44
may be moved toward the shaft
40
, or alternatively, the shaft
40
may be moved toward the shaft orientation device
44
. In one embodiment, the club head
58
is placed on the shaft
40
subsequent to the installation of the grip
42
on the shaft
40
. In an alternative embodiment, the club head
58
is placed on the shaft
40
prior to the shaft
40
being fed to the apparatus
30
. Yet, in a further embodiment, the club head
58
is placed on the shaft
40
at the shaft orientation device
44
. As mentioned previously, the shaft
40
is placed through a bore
62
of the club head
58
.
With or without a club head
58
, the shaft orientation device
44
orients the shaft
40
for placement of the handgrip
42
thereon. The tip
94
of the shaft gas injector
92
is inserted through the opening of the tip end
60
of the shaft
40
. The tip
94
, along with the alignment member
96
, positions the shaft
40
. If air is not flowed through the tip end
60
of the shaft
40
, then the tip end
60
may be blocked to maintain the air pressure inside the handgrip
42
as further described below.
Referring now to the grip mechanism
38
, handgrips
42
are fed to the apparatus
30
from a source through conventional means such as a conveyor or the like. Each handgrip
42
is placed on a receiving sleeve
100
of the grip mechanism
38
as shown in FIG.
10
. The handgrip
42
is actually placed in a channel
101
of the receiving sleeve
100
. The closed end
52
of the handgrip
42
is facing outward while the open end
46
is facing toward a grip mechanism housing
102
. Once in the receiving sleeve
100
, the handgrip
42
is oriented by a handgrip orientation device
104
. The orientation of the handgrip
42
may be performed simultaneously with the wrapping of tape
70
on the butt end
64
of the shaft
40
. The handgrip orientation device
104
generally includes a grip rotator
106
and a notch lever
108
with an engagement tip
110
. The grip rotator
106
rotates the handgrip
42
within the channel
101
until the engagement tip
110
engages the notch
56
of the handgrip
42
. Although the handgrip orientation device
104
as described may be applicable to many handgrips, those skilled in the art will recognize that other orientation devices such as laser alignment devices could be used for other handgrips that do not have a notch
56
.
Once the handgrip
42
is oriented properly, a grip gas injector
112
having a tip
114
engages the handgrip
42
through the aperture
52
of the closed end
50
of the handgrip
42
. The grip gas injector
112
is moved toward the handgrip
42
by a drive mechanism
116
. The drive mechanism
116
may be a pneumatic cylinder, a servomotor, or the like. The grip gas injector
112
, with the tip
114
inserted through the aperture
52
, pushes the handgrip
42
into the grip mechanism housing
102
for the expansion process. Once in the grip mechanism housing
102
, the handgrip
42
is ready for expansion. The grip mechanism housing
102
has a chamber
103
with a predetermined volume that limits the amount of expansion of the handgrip
42
. The chamber
103
ensures that the handgrip is not over expanded which might result in damage to the handgrip.
As shown in
FIG. 12
, a jaw assembly
120
is located on the opposite side of the grip mechanism housing
102
. The jaw assembly
120
generally includes a plurality of jaws
124
a-f
which have individual drive mechanisms
122
a-f.
The individual jaw drive mechanisms
122
a-f
may be pneumatic cylinders, servomotors, or the like. In
FIG. 12
, the jaw assembly
120
has six jaws
124
a-f
while in
FIG. 13
an alternative jaw assembly
120
′ has three jaws
124
a′-c′.
As shown in
FIG. 13
, the jaws
124
a′-c′
engage the open end
46
of the handgrip
42
to expand the open end
46
for placement of the shaft
40
therein.
As shown in
FIGS. 14-16
, each jaw
124
has an elongated body
126
and an engagement member
128
. The engagement member
128
enters the hollow interior
48
of the handgrip
42
through the open end
46
in order to exert an outward force on the interior of the handgrip
42
for expansion of the open end
46
.
As shown in
FIGS. 17 and 18
, the grip mechanism
38
, with a handgrip
42
therein, is moved by a drive mechanism
130
, not shown, toward the shaft
40
which has previously been aligned by the shaft orientation device
44
. The drive mechanism
130
may be a pneumatic cylinder, a servomotor, or the like. Alternatively, the shaft
40
may be moved by the shaft shuttle mechanism
34
toward the grip mechanism
38
. Once the wrapped butt end
64
of the shaft
40
engages the open end
46
of the handgrip
42
, the grip gas injector
112
flows a gaseous medium, preferably air, into the hollow interior
48
of the handgrip
42
to expand the hollow interior
48
from a first diameter to a second diameter. While the handgrip
42
is placed over the shaft
40
, the jaws
124
a-f
engage the open end
46
of the handgrip
42
in an expanded state. The expansion of the open end
46
and the hollow interior
48
allows for the handgrip to be placed over the butt end
64
of the shaft
40
in a dry, solventless state. More specifically, there is no need for a solvent, an aqueous medium or lubricant in order to place the handgrip
42
onto the butt end of the shaft
40
. Thus, the entire operation may be performed in a dry state which is beneficial for a safe and environmentally friendly workplace. The dry state operation is also provides a tremendous costs savings.
Once the handgrip
42
is in place on the shaft
40
, the plurality of jaws
124
a-f
move forward from the open end
46
of the handgrip
42
. This allows the open end
46
to fit tightly on the shaft
40
.
FIGS. 19-22
schematically illustrate the installation process. As shown in
FIG. 19
, the wrapped butt end
64
(wrapped with tape
70
) of the shaft
40
is moved toward the open end
46
of the handgrip
42
. The plurality of jaws
124
a-f
expand the open end
46
of the handgrip
42
. As shown in
FIG. 20
, the wrapped butt end
64
of the shaft
40
meets the open end
46
of the handgrip
42
and acts as a barrier to the outward flow of the gaseous medium from the hollow interior
48
. The hollow interior
48
is receiving the gaseous medium from tip
114
of the grip gas injector
112
which is inserted through the aperture
52
of the closed end
50
of the handgrip
42
. The gaseous medium may also be flowing through the hollow interior
68
of the shaft
42
from the tip
94
of the shaft gas injector
92
which is inserted through the tip end
60
of the shaft
42
. The counter-flow of the gaseous medium from the shaft gas injector
92
also acts as a barrier to flow of the gaseous medium from the grip gas injector
112
. The blockage of flow of the gaseous medium results in the expansion of the hollow interior
48
of the handgrip
42
from a first diameter to a second diameter. For example, the first diameter may be 1.3 cm while the second diameter is 3.0 cm. The second diameter must be large enough to accommodate the wrapped butt end
64
of the shaft
40
without substantial contact between the interior surface of the handgrip
42
and the tape
70
. It is the expansion that allows for the installation process to occur in a dry state. Alternatively, instead of a counter-flow of gaseous medium, the tip end
60
of the shaft
40
may be blocked to prevent the outflow of the gaseous medium from the grip gas injector
112
. The gaseous medium is preferably air, however, those skilled in the art will recognize that other gaseous mediums such as nitrogen, helium, and the like may be used as the gaseous medium for the present invention. Yet another alternative would have a grip mechanism housing
102
that evacuates air within it to create a vacuum to allow for the outward pressure and expansion of the hollow interior
48
of the handgrip
42
.
As shown in
FIG. 21
, the wrapped butt end
64
of the shaft has engaged the interior of the closed end
50
of the handgrip
42
resulting in the cessation of the flow of the gaseous medium into the hollow interior
48
and thereby resulting in the cessation of the expansion of the hollow interior
48
. Thus, the interior surface of the hollow interior
48
of the handgrip
42
contacts the tape
70
wrapped on the butt end
64
of the shaft
40
. As shown in
FIG. 22
, the jaws
124
a-f
move forward from the open end
46
of the handgrip
42
, and the gas injectors
112
and
92
disengage from contact with the newly gripped golf club shaft
40
. The gripped shaft
40
is then discharged from the apparatus for further processing.
From the foregoing it is believed that those skilled in the pertinent art will recognize the meritorious advancement of this invention and will readily understand that while the present invention has been described in association with a preferred embodiment thereof, and other embodiments illustrated in the accompanying drawings, numerous changes, modifications and substitutions of equivalents may be made therein without departing from the spirit and scope of this invention which is intended to be unlimited by the foregoing except as may appear in the following appended claims. Therefore, the embodiments of the invention in which an exclusive property or privilege is claimed are defined in the following appended claims.
Claims
- 1. A process for automatically installing a handgrip on a golf club shaft, the handgrip having a hollow interior with a first diameter, the process comprising:maintaining a butt end of a golf club shaft and the hollow interior of the handgrip in a dry state throughout the installation process; wrapping a double-sided tape over the butt end of the golf club shaft to create a taped butt end; flowing a gaseous medium into a first end of the handgrip to expand the hollow interior of the handgrip from the first diameter to a second diameter; expanding an open end of the handgrip with a plurality of jaws, the open end opposite the first end of the handgrip; inserting the taped butt end of the golf club shaft into the expanded hollow interior of the handgrip through the open end of the handgrip; detaching the plurality of jaws from the open end of the handgrip; terminating the flow of gaseous medium into the first end of the handgrip; and adhering the taped butt end of the golf club shaft to the interior surface of the handgrip.
- 2. The process according to claim 1 wherein wrapping the butt end comprises wrapping a double-sided tape over the butt end of the golf club shaft through adhering a middle region of the tape to the butt end, then adhering a first side region of the tape to the butt end, and then adhering a second side region of the tape to the butt end with an end portion of the second side region of the tape overlapping the first side region.
- 3. The process according to claim 1 further comprising orienting the handgrip for placement on the butt end of the shaft prior to flowing the gaseous medium into the handgrip.
- 4. The process according to claim 1 wherein mating the butt end of the golf club shaft with the hollow interior of the handgrip comprises inserting the butt end of the golf club shaft into the hollow interior of the handgrip.
- 5. The process according to claim 1 further comprising moving the plurality of jaws forward for release from the open end of the handgrip after mating the butt end of the golf club shaft with the hollow interior of the handgrip.
- 6. The process according to claim 1 wherein the plurality of jaws includes six jaws for engaging with and expanding the open end of the handgrip.
- 7. The process according to claim 1 further comprising flowing the gaseous medium through a tip end of the golf club shaft.
- 8. The process according to claim 1 further comprising orienting the golf club shaft through rotation and placement of a golf club head attached to the golf club shaft.
- 9. The process according to claim 2 further comprising transferring the golf club shaft with the taped butt end from an automatic taping station to an automatic handgrip attachment station for mating of the taped butt end of the golf club shaft with the hollow interior of the handgrip.
- 10. A process for automatically installing a handgrip on a golf club shaft, the handgrip having a hollow interior with a first diameter, the process comprising:maintaining a butt end of a golf club shaft and the hollow interior of the handgrip in a dry state throughout the installation process; wrapping a double-sided tape over the butt end of the golf club shaft to create a taped butt end; flowing a gaseous medium into the handgrip through a hole in a closed end of the handgrip to expand the hollow interior of the handgrip from the first diameter to a second diameter; flowing a gaseous medium into a tip end of the golf club shaft or through a bore of a golf club head; expanding an open end of the handgrip with a plurality of jaws, the open end opposite the closed end of the handgrip; inserting the taped butt end of the golf club shaft into the expanded hollow interior of the handgrip through the open end of the handgrip; detaching the plurality of jaws from the open end of the handgrip; terminating the flow of gaseous medium into the first end of the handgrip; and adhering the taped butt end of the golf club shaft to the interior surface of the handgrip.
- 11. The process according to claim 10 wherein wrapping the butt end comprises wrapping a double-sided tape over the butt end of the golf club shaft through adhering a middle region of the tape to the butt end, then adhering a first side region of the tape to the butt end, and then adhering a second side region of the tape to the butt end with an end portion of the second side region of the tape overlapping the first side region.
- 12. The process according to claim 11 further comprising transferring the golf club shaft with the taped butt end from an automatic taping station to an automatic handgrip attachment station for mating of the taped butt end of the golf club shaft with the hollow interior of the handgrip.
US Referenced Citations (5)