GB2299090A - Low-temperature heat shrinkable material suitable for a golf club grip - Google Patents
Low-temperature heat shrinkable material suitable for a golf club grip Download PDFInfo
- Publication number
- GB2299090A GB2299090A GB9506100A GB9506100A GB2299090A GB 2299090 A GB2299090 A GB 2299090A GB 9506100 A GB9506100 A GB 9506100A GB 9506100 A GB9506100 A GB 9506100A GB 2299090 A GB2299090 A GB 2299090A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grip
- golf club
- shaft
- heat shrinkable
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/06—Handles
- A63B60/08—Handles characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/14—Handles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/011—Crosslinking or vulcanising agents, e.g. accelerators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Golf Clubs (AREA)
Abstract
A low-temperature, heat shrinkable material which can used to form a heat shrinkable golf club grip is composed of 100 parts by weight of ethylene propylene rubber, 40 to 80 parts by weight of low-melting polyolefin, 5 to 22 parts by weight of carbon black, and 1 to 3 parts by weight of a cross-linking agent. The heat shrinkable golf club grip (1) is easily attached to a golf club shaft (7) using hot water (9) as a heat source. A plastic bag (3) covers and protects the golf club grip during heating. In one embodiment, a second bag (5) receives the hot water into which the bag-protected golf club grip is immersed. The materials disclosed permit heat shrinking the heat shrinkable golf club grip at temperatures ranging from 60 to 90 degrees Celsius.
Description
LOW-TEMPERATURE HEAT SHRINKABLE MATERIAL
SUITABLE FOR A GOLF CLUB GRIP
The present invention relates to a heat shrinkable material, and more specifically, to a heat shrinkable material adapted for use as a low-temperature heat shrinkable golf club grip which can be easily mounted on a golf club shaft without requiring any specialised devices.
Conventional, heat shrinkable golf club grips generally shrink at very high temperatures, some exceeding 100 degrees Celsius. This, in turn, necessitates special tools capable of producing high temperatures. In order to facilitate mounting prior art golf club grips on conventional golf club shafts, it is necessary to use devices such as driers and blow torches. However, such devices generate excessive heat which can be a problem.
In view of the need for specialised devices capable of generating excessive heat, mass production of prior art golf club grips requires complex high-temperature generating machinery containing automatic temperature maintenance systems. This, in turn, requires significant investment in equipment, resulting in high production costs. The expensive equipment, in turn, increases the overall cost of producing conventional golf club grips, thus making them less competitive in the international market. Indeed, the above drawbacks have substantially impaired mass production of prior art heat shrinkable golf club grips.
Also, the need for expensive heat generating devices such as gas torches and driers makes it difficult for individual hobbyist to use prior art golf club grip as replacement grips since these devices are not readily available to a hobbyist.
A further disadvantage of prior art golf club grips is the attendant risk of fire and burns which is created by the high temperature generating devices required to mount them.
An attendant problem with conventional golf club grip mounting is non-uniform shrinkage of the heat shrinkable golf club grip. The non-uniform shrinkage results from the lack of experience on the part of untrained personnel attempting to shrink-mount conventional golf club grips. To avoid non-uniform shrinkage of conventional golf club grips, a trained technician is routinely recommended. The requirement for a trained technician, in turn, makes the overall cost of mounting prior art golf club grips prohibitively expensive.
Indeed, the need for experienced technicians coupled with the need for expensive extraneous heat-generating devices, has made prior art golf club grips uneconomical and exorbitantly expensive to produce and market on a large scale.
The above drawbacks have, however, created a worldwide demand for heat shrinkable golf club grips which can be mounted on conventional golf club shafts at temperatures below 100 degrees Celsius, at low cost, and without the need for expensive heat generating devices.
The present invention aims to provide such a golf club grip which, in view of its low cost, will find widespread among individual hobbyists.
An object of the present invention is to overcome the drawbacks associated with prior art heat shrinkable golf club grips.
A further object of the present invention is to provide a low-temperature heat shrinkable golf club grip material which can easily be mounted on a conventional golf club shaft.
A still further object of the present invention is to provide a low-temperature heat shrinkable golf club grip material which can be mass-produced at low cost.
A still further object of the present invention is to provide a low-temperature heat shrinkable golf club grip material which can be used by individual hobbyists as a replaceable golf club grip without the need for expensive heat generating devices.
Briefly stated, the present invention provides a low-temperature, heat shrinkable material which can used to form a heat shrinkable golf club grip. The heat shrinkable material is composed of 100 parts by weight of ethylene propylene rubber, 40 to 80 parts by weight of low-melting polyolefin, 5 to 22 parts by weight of carbon black, and 1 to 3 parts by weight of a cross-linking agent. The heat shrinkable golf club grip is easily attached to a golf club shaft using hot water as a heat source. A flexible fluid-tight container, such as a plastic bag, covers and protects the golf club grip during heating. In one embodiment, a second, outer, flexible fluid-tight container, such as a plastics outer bag, receives the hot water into which the bag-protected golf club grip is immersed.The materials disclosed permit heat shrinking the heat shrinkable golf club grip at temperatures ranging from 60 to 90 degrees Celsius.
According to an embodiment of the invention, there is provided a low-temperature, heat shrinkable material characterised in that it can be heat-shrunk at low temperatures and which includes 100 parts by weight of ethylene propylene rubber, from 40 to 80 parts by weight of low-melting polyolefin, from 5 to 22 parts by weight of carbon black, and from 1 to 3 parts by weight of a cross-linking agent such as at least one of zinc oxide, tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di/n/butyldithiocarbamate.
According to another embodiment of the invention, there is provided a low-temperature, heat shrinkable grip such as a golf club grip as shown in Figure la, which is characterised in that the grip can be heat-shrunk at low temperatures, which includes a grip composed of a low-temperature, heat shrinkable material, the grip has an aperture which is effective for receiving a shaft; the low-temperature, heat shrinkable material is characterised in that is includes 100 parts by weight of ethylene propylene rubber, from 40 to 80 parts by weight of low-melting polyolefin, from 5 to 22 parts by weight of carbon black, and from 1 to 3 parts by weight of a cross-linking agent such as at least one of zinc oxide, tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di / n /butyldithiocarbamate.
An alternative embodiment contemplates a method for shrink mounting a grip onto a shaft, characterised in that the low-temperature heat-shrinkable grip can be used as a golf club grip for shrink-mounting on golf shafts, which includes the steps of providing a low-temperature, heat shrinkable grip, inserting the shaft into an aperture in the grip effective for receiving the member to form a combination structure, placing the combination structure in a plastic bag, and immersing the plastic bag containing the grip together with the shaft in a hot fluid bath for a period of time effective to shrink mount the grip on the shaft.
According to another embodiment, there is provided a low temperature, heat shrinkable grip characterised in that the grip can be heat shrunk at low temperatures, wherein the grip is composed of a shape-memory material, the grip having an aperture for receiving a shaft, the aperture is capable of being expanded to receive the shaft, the aperture has a shape memory which provides it a final aperture smaller than the shaft, and means for heating the grip whereby the grip is shrink-mounted to attempt to reduce to the final aperture, whereby the grip is firmly affixed on the shaft.
The above, and other objects, features and advantages of the present invention will become apparent from the following description read in conjunction with the accompanying drawings, in which like reference numerals designate the same elements.
Figure la is a section view of a golf club grip of an embodiment of the present invention.
Figure 1b is a plan view of a plastic bag.
Figure 2a is a section view of an embodiment of the present invention.
Figure 2b is a plan view of a plastic bag.
Figure 2c is a plan view of a plastic bag which is larger than the plastic bag of Figure 2b.
Figure 3 is an elevation showing a heating bath for use in shrinking a golf club grip of the present invention.
Figure 4 shows an alternative heating bath for use in shrinking a golf club grip of the present invention.
The low-temperature heat shrinkable material of the present invention is capable of shrink mounting at temperatures below 100 degrees Celsius. The low-temperature heat shrinkable material includes 100 parts by weight of ethylene propylene rubber, from about 40 to about 80 parts by weight of low-melting polyolefin, and about 5 to 22 parts by weight of carbon black and 1 to 3 parts by weight of a cross-linking agent. The cross-linking agent can include at least one of zinc oxide, (also known as zinc white), tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di/n/butyldithiocarbamate.
If the amount of the low-melting polyolefin falls below 40% by weight, the "shape memory" characteristics of the heat shrinkable material including products derived therefrom, are substantially impaired. When the amount of the low-melting polyolefin is below 40 parts by weight, the heat shrinkable material together with its derived products such as a heat shrinkable golf club grip is unable to shrink effectively, thereby negating its practical features i.e., heat-shrinking at low temperatures.
Alternatively, if the amount of the low-melting polyolefin exceeds 80 parts by weight, the resiliency of the rubber is impaired. This drawback, in turn, affects the overall practicality of the heat shrinkable material and its derived products.
Accordingly, the amount of the low-melting polyolefin for use in forming the heat shrinkable material and its derived products should be from about 40 to about 80 parts by weight.
The low-temperature heat shrinkable golf club grip material (hereinafter referred to as "heat shrinkable golf club grip") is composed of the above noted low-temperature, heat shrinkable material which allows the heat shrinkable golf club grip to heat shrink at temperatures of 100 degrees Celsius or below.
The source of heat for shrinking the heat shrinkable golf club grip is a hot fluid, such as water.
While heat-shrinking the heat shrinkable material of the golf club grip, the golf club grip is enclosed in a rectangular transparent plastic bag to prevent contact of the hot fluid with the heat shrinkable golf club grip and golf club.
The heat shrinkable golf club grip may further include an additional rectangular transparent plastic bag (hereinafter referred to as the "plastic holder bag") that is normally open at the top.
The plastic holder bag is about the same length as the rectangular transparent plastic bag described above.
It normally holds the rectangular transparent plastic bag described above. Similar to the above mentioned transparent plastic bag, the plastic holder bag is also capable of withstanding temperatures of 100 degrees Celsius and higher to provide an effective barrier in shielding the transparent plastic bag containing the grip and shaft from the hot fluid bath.
The heat shrinkable golf club grip together with the aperture effective for receiving a shaft such as a golf club shaft, is normally slipped onto an end of a golf club grip shaft such that the aperture receives the golf club grip shaft. Thereafter, the rectangular transparent plastic bag is fitted over the heat shrinkable golf club grip with the golf club shaft inside.
The transparent plastic bag containing the heat 'shrinkable golf club grip mounted on a conventional golf club grip shaft is then placed in warm water such that the bag and its contents are effectively submerged to the top.
The warm water bath is heated to a temperature effective to heat-shrink the golf club grip. It is preferable that the temperature of the water be from 60 to 100 degrees Celsius, and more preferably from 80 to 100 degrees Celsius. The time required to effectively heat-shrink the heat shrinkable golf club grip varies from 1 to 7 minutes, more preferably from 2 to 4 minutes.
The step of submerging the heat-shrinking golf club grip together with the golf shaft effectively shrink mounts the heat shrinkable golf club grip on the golf club shaft.
The above method can be used effectively to shrink-mount large numbers of heat shrinkable golf club grips one after the other. As such, the method is suited for mass-production. Also, the above method does away with the need for high-temperature generating devices, which, in turn, lowers the overall production cost thereby making the production of the heat shrinkable golf club grips more cost effective and competitive in the market place.
An alternative embodiment contemplates shrink-mounting the low temperature heat shrinkable golf club grip on a golf club shaft by placing the heat shrinkable golf club grip on a golf club shaft such that the shaft is effectively secured in the aperture effective to receive the shaft. Thereafter, the heat shrinkable golf club grip and the golf club shaft are placed in the rectangular transparent plastic bag.
The resulting structure, in turn, is placed inside the plastic holder bag containing water heated to about 100 degrees Celsius. This procedure can be practised at home wherein the hot water is provided by any suitable means, such as a domestic kettle, and the water is contained in the plastic bag holder, which effectively surrounds and submerges the heat shrinkable golf club grip mounted on the conventional golf club grip.
The above procedures effectively shrink-mounts the heat shrinkable golf club grip of the present invention on conventional golf club shafts with ease and without the use of expensive heat generating devices. Also, since the above procedure can be performed simply using hot water from a kettle, it is well suited for use by individual hobbyists.
The following two embodiments are presented as illustrations of the present invention. The embodiments are presented in conjunction with the accompanying drawings, in which:
Referring now to the drawings, Referring to Figure la, a heat shrinkable golf club grip, shown generally at 1; includes an appropriately long shaft which includes an aperture la for receiving a conventional golf club shaft 7 (Figures 7 and 8).
Beat shrinkable golf club grip 1 is formed of a composition which includes 100 parts by weight of ethylene propylene rubber, from about 40 to about 80 parts by weight of low melting polyolefin, from about 5 to 22 parts by weight of carbon black and from about 1 to 3 parts by weight (wt%) of at least -one cross-linking agent. The preferred cross-linking agents include, but are not limited to, at least one of zinc oxide, (also known as zinc white), tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di/n/butyldithiocarbamate.
Referring to Figure lb, a rectangular transparent plastic bag, shown generally as 3, includes an open upper end 2 effective to receive heat shrinkable golf club grip 1 together with a portion of a conventional golf club shaft 7. Rectangular transparent plastic bag 3 is longer than heat shrinkable golf club grip 1. Rectangular transparent plastic bag 3 can withstand heating to temperatures of 100 degrees Celsius or higher. Rectangular transparent plastic bag 3 may be made of any appropriate plastic material exemplified by natural rubber or plastic.
Referring now to Figure 2c, an alternative embodiment is seen which contemplates an additional plastic bag holder 5 for containing heated liquid into which rectangular transparent plastic bag 3 is immersed. Plastic bag holder 5, includes a cutoff 6 on an upper end 4 to effectively permit overflow so that a predetermined depth of liquid is retained therein, as will be explained. Upper end 4 is effective to receive heat shrinkable golf club grip 1 together with conventional golf club shaft 7 already contained in rectangular transparent plastic bag 3.
Plastic bag holder 5 can withstand heating to temperatures of 100 degrees Celsius or higher. Plastic bag holder 5 may be made of any appropriate plastic material exemplified by natural rubber or plastic.
To make the assembly shown in Figure 3, which depicts shrink-mounting the heat shrinkable golf club grip 1 on a conventional golf club shaft 7, golf club shaft 7 is mechanically inserted into the aperture la of heat shrinkable golf club grip 1. Thereafter, the resulting combination of heat shrinkable golf club grip 1 and golf club shaft 7 are placed inside rectangular transparent plastic bag 3.
The resulting assembly is then placed in a container 8, which holds a water bath 9, heated to about 100 degrees Celsius (there is only one golf club grip shown in Figure 3). Water bath 9 can be heated by any available heating method including water heaters, boilers etc.
Alternatively, the water for water bath 9 can be supplied from an outside hot water source. After submerging the resulting assembly in water bath 9 for about 1 to 7 minutes, the heat of the water bath effectively shrinks hot shrinkable golf club grip 1 on golf club shaft 7.
The above procedure can be used on a large scale wherein more than one low temperature heat shrinkable golf club grips 1 is shrink mounted on a plurality of golf club shafts 7.
It is preferable that the temperature of the hot water bath be from 60 to 100 degrees, more preferably from 80 to 100 degrees Celsius. Generally, the time required to effectively shrink mount heat shrinkable golf club grip 1 on a conventional golf club shaft 7 is from 1 to 7 minutes, more preferably from 2 to 4 minutes.
The heat shrinkable golf club grip 1 generally begins shrinking at a temperature of about 60 degrees
Celsius. It is preferable to shrink-mount low-temperature heat shrinkable golf club grip 1 at a temperature of about 95 degrees Celsius.
Referring to Figure 4, in a further embodiment, a conventional golf club shaft 7 is inserted into aperture la (not shown) of heat shrinkable golf club grip 1.
Thereafter, the combination of the heat shrinkable golf club grip 1 and the conventional golf club shaft 7, is placed inside rectangular transparent plastic bag 3.
Rectangular transparent plastic bag 3 containing heat shrinkable golf club grip 1 and conventional golf club shaft 7 is placed inside plastic bag holder 5, which contains the water bath 9. The water for water bath 9 is supplied, for example, from a kettle 10. Rectangular transparent plastic bag 3 is submerged in plastic bag holder 5 such that plastic bag holder 5 almost completely submerges rectangular transparent plastic bag 3.
The placement of rectangular transparent plastic bag 3 inside plastic bag holder 5 is such that the conventional golf club shaft which is inserted into heat shrinkable golf club grip 1 is completely surrounded by water bath 9. Cutoff 6 in plastic bag holder 5 serves as an outlet for controlling the depth of water in water bath 9.
The transparency of plastic bag holder 5 enables one to visually observe and confirm the shrink mounting of heat shrinkable golf club grip 1 onto the golf club shaft 7.
The heat shrinkable golf club grip of the present invention is capable of being shrink mounted on a conventional golf club shaft at temperatures as low as 60 degrees Celsius.
It is preferable to apply an adhesive such as a hot melt adhesive to the golf club grip shaft aperture prior to mounting on a golf club shaft 7.
Although, the present invention discloses the use of the heat shrinkable material adapted for use as a heat shrinkable golf club grip, it is to be understood that the underlying low-temperature, heat shrinkable material may be used to form grips for tennis rackets and agricultural machinery implements as well.
The present invention provides for mass scale production of low-temperature heat shrinkable golf club grips which can heat-shrink at low temperatures. The present invention also does away with the requirement for expensive heat generating devices. Indeed, the ease of using hot water to facilitate shrink-mounting exemplified by Figs. 3 and 4, makes the present invention more economical over the prior art.
Likewise, the embodiment depicted in Figure 4 (also referred to as the two layered embodiment) enables individual hobbyists to shrink mount the low-temperature heat shrinkable golf club grip of the present invention with ease and at low cost. The method according to this embodiment will also reduce the risk of fire and burns to those practising the present invention.
Indeed, the two-layered embodiment does away with heat-generating devices such as gas torches and dryers, and can be practised with ease and with the aid of a kettle, thereby facilitating use by individual hobbyists.
Having described preferred embodiments of the invention with reference to the accompanying drawings, it is to be understood that the invention is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the invention as defined in the appended claims.
Claims (12)
1. A low-temperature, heat shrinkable material comprising:
100 parts by weight of ethylene propylene rubber;
from 40 to 80 parts by weight of a low melting polyolefin;
from 5 to 22 parts by weight of carbon black; and
from 1 to 3 parts by weight of a cross-linking agent such as at least one of zinc oxide, tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di/n/butyldithiocarbamate.
2. A heat shrinkable material according to claim 1, wherein the heat shrinkable material shrinks at a temperature of from 60 to 100 degrees Celsius.
3. A low-temperature heat shrinkable grip, which includes:
a grip (1) composed of a low-temperature, heat shrinkable material; the grip being generally tubular and having an axially extending bore (la) which is effective for receiving a shaft (7) and has an initial diameter greater than that of the shaft prior to heating, and a final diameter less than or equal to that of the shaft after heating, and is composed of a material that includes 100 parts by weight of ethylene propylene rubber; from 40 to 80 parts by weight of low-melting polyolefin; from 5 to 22 parts by weight of carbon black; and from 1 to 3 parts by weight of a cross-linking agent such as at least one of zinc oxide, tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di/n/butyldithiocarbamate.
4. A method for shrink mounting a golf club grip on a golf club shaft, which includes the steps of providing a low-temperature, heat shrinkable grip (1);
inserting the shaft (7) into an aperture (la) in the grip (1) effective for receiving the shaft to form a combination structure;
placing the combination structure in a fluid-tight bag (3); and
immersing the fluid-tight bag (3) containing the grip (1) together with the shaft (7) in a hot fluid bath for a period of time effective to shrink mount the grip (1) on the shaft (7).
5. A method according to claim 4, wherein the hot fluid is water.
6. A method according to claim 4 or claim 5, wherein the hot fluid is heated to a temperature of from 60 to about 100 degrees Celsius.
7. A method according to claim 4, wherein the low-temperature, heat shrinkable grip is composed of a low-temperature heat-shrinkable material which contains 100 parts by weight of ethylene propylene rubber; from 40 to 80 parts by weight of low-melting polyolefin; from 5 to 22 parts by weight of carbon black; and from 1 to 3 parts by weight of cross-linking agent such as at least one of zinc oxide, tetramethyl thiuram disulphide, dipentamethylenethiuram tetra sulphide, dibenzothiazyl disulphide and zinc di/n/butyldithiocarbamate.
8. A method according to any of claims 4 to 7, wherein the immersion time is from 1 to about 7 minutes.
9. A low-temperature, heat shrinkable grip (1) assembly comprising a shaft and a grip composed of a shape-memory material, the grip having an aperture (la) for receiving the shaft (7), the aperture (la) being capable of expanding to receive the shaft (7), the grip having a shape memory which provides aperture (la) with a final aperture diameter smaller than that of the shaft (7), and means for heating the grip whereby the grip is shrink-mounted to attempt to reduce the aperture to the final diameter, whereby the grip is firmly affixed on the shaft (7).
10. A low-temperature, heat shrinkable grip assembly according to claim 9, wherein the grip is a golf club grip and the shaft is golf club shaft.
11. A low-temperature, heat shrinkable grip according to claim 9 or claim 10, wherein the means for heating is a hot fluid; and the assembly further includes means for protecting the grip and the shaft from contact with the fluid.
12. A low-temperature, heat shrinkable grip according to claim 11, wherein the means for protecting the grip and the shaft from contact with the hot fluid includes at least one transparent fluid-tight bag.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341552A JPH07163692A (en) | 1993-12-10 | 1993-12-10 | Low temperature heat-shrinkage golf club grip |
| GB9506100A GB2299090A (en) | 1993-12-10 | 1995-03-24 | Low-temperature heat shrinkable material suitable for a golf club grip |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341552A JPH07163692A (en) | 1993-12-10 | 1993-12-10 | Low temperature heat-shrinkage golf club grip |
| GB9506100A GB2299090A (en) | 1993-12-10 | 1995-03-24 | Low-temperature heat shrinkable material suitable for a golf club grip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9506100D0 GB9506100D0 (en) | 1995-05-10 |
| GB2299090A true GB2299090A (en) | 1996-09-25 |
Family
ID=26306747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9506100A Withdrawn GB2299090A (en) | 1993-12-10 | 1995-03-24 | Low-temperature heat shrinkable material suitable for a golf club grip |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH07163692A (en) |
| GB (1) | GB2299090A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101976317B1 (en) * | 2018-03-23 | 2019-05-07 | 주식회사 공진 | Tube Mounting Methods and Structure for Door Handles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0357322A2 (en) * | 1988-08-23 | 1990-03-07 | Advanced Elastomer Systems, L.P. | Thermoplastic olefin compositions of epdm rubber and ethylene copolymer resin |
| EP0412172A1 (en) * | 1988-03-10 | 1991-02-13 | Sumitomo Chemical Company, Limited | Heat-shrinkable, tubular foam |
| DE4343166A1 (en) * | 1993-04-22 | 1994-10-27 | Stewing Nachrichtentechnik | Material web for producing a covering which can be shrink-fitted, in particular onto cable connections and/or cable branches |
-
1993
- 1993-12-10 JP JP5341552A patent/JPH07163692A/en active Pending
-
1995
- 1995-03-24 GB GB9506100A patent/GB2299090A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0412172A1 (en) * | 1988-03-10 | 1991-02-13 | Sumitomo Chemical Company, Limited | Heat-shrinkable, tubular foam |
| EP0357322A2 (en) * | 1988-08-23 | 1990-03-07 | Advanced Elastomer Systems, L.P. | Thermoplastic olefin compositions of epdm rubber and ethylene copolymer resin |
| DE4343166A1 (en) * | 1993-04-22 | 1994-10-27 | Stewing Nachrichtentechnik | Material web for producing a covering which can be shrink-fitted, in particular onto cable connections and/or cable branches |
Non-Patent Citations (1)
| Title |
|---|
| WPI Abstract Accession No 94-334190/42 & DE4343166 A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9506100D0 (en) | 1995-05-10 |
| JPH07163692A (en) | 1995-06-27 |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |