US3920658A - Coated tennis string and process for coating - Google Patents

Coated tennis string and process for coating Download PDF

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Publication number
US3920658A
US3920658A US418432A US41843273A US3920658A US 3920658 A US3920658 A US 3920658A US 418432 A US418432 A US 418432A US 41843273 A US41843273 A US 41843273A US 3920658 A US3920658 A US 3920658A
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United States
Prior art keywords
string
coating
tennis
ball
skid
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Expired - Lifetime
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US418432A
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Martin James Benson
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Individual
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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/02—Strings; String substitutes; Products applied on strings, e.g. for protection against humidity or wear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/296—Rubber, cellulosic or silicic material in coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y10T428/2969—Polyamide, polyimide or polyester

Definitions

  • the invention relates to tennis strings. It is an object of the present invention to provide a superior tennis string, possessing essentially the elastic properties of gut, nylon, or polyester, but which has greater friction against the ball, imparting to it greater'spin with less effort. A further object is to provide a tennis string of gut which not only has good elastic properties, but is unaffected by moisture.
  • gut strings are generally considered superior to all others by knowledgable tennis players, and give the best performance on the tennis court. Gut strings provide the best blend of power and control, due to their particular elastic properties.
  • Nylon strings are also commonly and widely used. They give satisfactory performance, and are cheaper than gut and impervious to moisture. A more recent development is polyester strings, which have been shown to be quite satisfactory, and are rapidly gaining acceptance.
  • the invention is a tennis string composed of gut, nylon, or polyester which has a thin, durable coating of skid-proof rubber, or other skid-proofing coating.”lt is, of course, to be understood that the coating can be applied either before or after stringing the racquet.
  • the coating may be of nearly any soft, durable, elastomeric material, e.g., natural or synthetic rubber, urethane rubber, high-density urethane foam, polyvinyl chloride, etc. I prefer to employ a soft, one component, room temperature curing urethane rubber for the coating.
  • An alternative type of coating could be made by including a granular substance, such as fine silica sand, in a coating material which is not inherently skid-proof, such as an alkyd, or an acrylic.
  • a granular substance such as fine silica sand
  • a coating material which is not inherently skid-proof, such as an alkyd, or an acrylic.
  • the granular material gives the cured coating a rough surface which is skidproof.
  • the coatings are intended to be quite thin, thus assuring that the resulting strings have essentially the same elastic properties as strings-entirely composed of gut or nylon or polyester, which properties have been shown to be superior for tennis strings.
  • the skid-proof coating makes these strings more effective in imparting spin to the ball than conventional strings.
  • a further advantage of the invention is that a rubber coated gut string will be completely impervious to moisture. Yet another advantage is improved abrasion resistance.
  • these rubber coated strings as described above, can be given a further coating of wax, for ease in stringing a racquet.
  • a tennis string of gut, nylon, or polyester which is coated with a. coating resin containing sufficient fine, granular material to significantly increase the friction of string against ball.
  • a process for increasing the effectiveness of a tennis string in imparting spin to a tennis ball comprising applying a soft, skid-proof, elastomeric material, or a coating resin containing sufficient fine, granular material to significantly increase the friction of the string against the ball, to the string after the racquet is strung.
  • skid-proof coating is a soft, elastomeric material.
  • skid-proof coating is a coating. resin containing sufficient fine, granular material to significantly increase the friction of the string against the ball.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A tennis string of gut, nylon, or polyester is coated with skidproof material to obtain a superior string capable of imparting more spin to a tennis ball with less effort by the player.

Description

United States Patent [191 Benson Nov. 18, 1975 COATED TENNIS STRING AND PROCESS FOR COATING [76] lnventor: Martin James Benson, 4107 N.
Spaulding Ave., Chicago, 111. 60618 [22] Filed: Nov. 23, 1973 [21] App1. No.: 418,432
Related US. Application Data [63] Continuation-in-part of Ser. No. 219,580, Jan. 20,
1972, abandoned.
[56] References Cited UNITED STATES PATENTS 328,004 10/1885 Church ..51/404X 1,279,718 9/1918 Lewis 117/141 2,401,291 5/1946 Smith 57/153 X 3,120,144 2/1964 Bayer 84/297 S X 3,330,689 7/1967 117/92 X 3,738,096 6/1973 Crandall 57/140 C X FOREIGN PATENTS OR APPLICATIONS 1,101,384 l/1968 United Kingdom 57/153 Primary Examiner-Ralph Husack [57] ABSTRACT A tennis string of gut, nylon, or polyester is coated with skid-proof material to obtain a superior string capable of imparting more spin to a tennis ball with less effort by the player.
4 Claims, No Drawings COATED TENNIS STRING AND PROCESS FOR COATING DESCRIPTION This application is a continuation-in-part of copending application, Ser. No. 2l9,580filed Jan. 20, 1972, now abandoned.
The invention relates to tennis strings. It is an object of the present invention to provide a superior tennis string, possessing essentially the elastic properties of gut, nylon, or polyester, but which has greater friction against the ball, imparting to it greater'spin with less effort. A further object is to provide a tennis string of gut which not only has good elastic properties, but is unaffected by moisture.
ln the past, attempts have been made to string tennis racquets with wire, with solid rubber strings, and with wire coated with rubber. None of these attempts have met with any-degree of popular success, because of the poor elastic and mechanical qualities of such stringing, and all have long since been abandoned.
At the present time, gut strings are generally considered superior to all others by knowledgable tennis players, and give the best performance on the tennis court. Gut strings provide the best blend of power and control, due to their particular elastic properties.
Nylon strings are also commonly and widely used. They give satisfactory performance, and are cheaper than gut and impervious to moisture. A more recent development is polyester strings, which have been shown to be quite satisfactory, and are rapidly gaining acceptance.
However, one disadvantage of gut, nylon, and polyester strings is that all are inherently slippery and, consequently, inefiicient in imparting spin to a tennis ball. Gut has the further disadvantage of being sensitive to moisture.
To the end of overcoming these disadvantages of conventional strings, my invention has been contrived.
The invention, then, is a tennis string composed of gut, nylon, or polyester which has a thin, durable coating of skid-proof rubber, or other skid-proofing coating."lt is, of course, to be understood that the coating can be applied either before or after stringing the racquet.
2 The coating may be of nearly any soft, durable, elastomeric material, e.g., natural or synthetic rubber, urethane rubber, high-density urethane foam, polyvinyl chloride, etc. I prefer to employ a soft, one component, room temperature curing urethane rubber for the coating.
An alternative type of coating could be made by including a granular substance, such as fine silica sand, in a coating material which is not inherently skid-proof, such as an alkyd, or an acrylic. The granular material gives the cured coating a rough surface which is skidproof.
In the most valuable embodiment of my invention, the coatings are intended to be quite thin, thus assuring that the resulting strings have essentially the same elastic properties as strings-entirely composed of gut or nylon or polyester, which properties have been shown to be superior for tennis strings. The skid-proof coating, however, makes these strings more effective in imparting spin to the ball than conventional strings.
A further advantage of the invention is that a rubber coated gut string will be completely impervious to moisture. Yet another advantage is improved abrasion resistance.
As a further improvement to my invention, these rubber coated strings, as described above, can be given a further coating of wax, for ease in stringing a racquet.
Having thus described the invention, what is claimed as new is:
l. A tennis string of gut, nylon, or polyester, which is coated with a. coating resin containing sufficient fine, granular material to significantly increase the friction of string against ball.
2. A process for increasing the effectiveness of a tennis string in imparting spin to a tennis ball comprising applying a soft, skid-proof, elastomeric material, or a coating resin containing sufficient fine, granular material to significantly increase the friction of the string against the ball, to the string after the racquet is strung.
3. The process of claim 2, wherein the skid-proof coating is a soft, elastomeric material.
4. The process of claim 2, wherein the skid-proof coating is a coating. resin containing sufficient fine, granular material to significantly increase the friction of the string against the ball.

Claims (4)

1. A TENNIS STRING OF GUT, NYLON, OR POLYESTERM WHICH IS COATED WITH A COATING RESIN CONTAINING SUFFICIENT FINE, GRANULAR MATERIAL TO SIGNIFICANTLY INCREASE THE FRICTION OF STRING AGAINST BALL
2. A process for increasing the effectiveness of a tennis string in imparting spin to a tennis ball comprising applying a soft, skid-proof, elastomeric material, or a coating resin containing sufficient fine, granular material to significantly increase the friction of the string against the ball, to the string after the racquet is strung.
3. The process of claim 2, wherein the skid-proof coating is a soft, elastomeric material.
4. The process of claim 2, wherein the skid-proof coating is a coating resin containing sufficient fine, granular material to significantly increase the friction of the string against the ball.
US418432A 1972-01-20 1973-11-23 Coated tennis string and process for coating Expired - Lifetime US3920658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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US21958072A 1972-01-20 1972-01-20
US418432A US3920658A (en) 1972-01-20 1973-11-23 Coated tennis string and process for coating

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238262A (en) * 1978-07-26 1980-12-09 Fishel Clark W Applying particles and adhesive to racquet strings
EP0049196A1 (en) * 1980-09-26 1982-04-07 Cousin Freres S.A. Strings of synthetic materials for tennis rackets
US4377620A (en) * 1982-06-21 1983-03-22 Edward Alexander Gut for tennis racket and the like and method of making same
US4391088A (en) * 1982-01-13 1983-07-05 United States Tennis Gut Association, Inc. String for sports rackets
EP0086285A1 (en) * 1982-02-10 1983-08-24 Gosen Co., Ltd. Improvements in and relating to racket strings
US4449353A (en) * 1982-08-06 1984-05-22 United States Tennis Gut Association, Inc. Gut string for sports rackets
US4586708A (en) * 1984-03-09 1986-05-06 Imperial Chemical Industries Plc Sports racket strings of a synthetic thermoplastic polymeric material
US5327714A (en) * 1992-07-30 1994-07-12 Prince Manufacturing, Inc. Synthetic string for sporting application
US5376412A (en) * 1990-11-26 1994-12-27 Regnault Reynolds S.A. Process for manufacturing strings to be subjected to tensile stress, in particular strings for rackets and musical instruments, and strings obtained thereby
US5570883A (en) * 1994-07-04 1996-11-05 Csabai; Julius S. Sport racket with string stabilization and friction coating
US5601762A (en) * 1993-12-14 1997-02-11 Ferrari Importing Company Method for enhancing the properties of a string used in a stringing device
WO2008122141A1 (en) * 2007-04-10 2008-10-16 Suermeci Buenyamin Product for roughening the strings of tennis, badminton and squash rackets and for keeping them rough and method for producing said product
KR101214874B1 (en) 2010-07-26 2012-12-24 조진영 Manufacturing method for rarket and rarket manufactrued therefrom
US20190118045A1 (en) * 2016-04-27 2019-04-25 Yonex Co., Ltd. String set, main string, and cross string
WO2020031529A1 (en) * 2018-08-10 2020-02-13 株式会社ゴーセン Racket string and method of manufacturing same
US20210268340A1 (en) * 2020-02-28 2021-09-02 Sumitomo Rubber Industries, Ltd. Racket
US20220249919A1 (en) * 2021-02-09 2022-08-11 Conduit Space Recovery Systems LLC Strings for a tennis racket

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US328004A (en) * 1885-10-13 Polishing or emery cord
US1279718A (en) * 1916-11-03 1918-09-24 Seneca G Lewis Rubber-coated cord.
US2401291A (en) * 1943-06-11 1946-05-28 Du Pont Racket string
US3120144A (en) * 1958-07-23 1964-02-04 Bayer Willi String and process for its manufacture
US3330689A (en) * 1963-06-20 1967-07-11 Deering Milliken Res Corp Latex coated fibrous material and method of making same
US3738096A (en) * 1970-11-09 1973-06-12 Ashaway Line & Twine Mfg Manufacture and construction of strings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US328004A (en) * 1885-10-13 Polishing or emery cord
US1279718A (en) * 1916-11-03 1918-09-24 Seneca G Lewis Rubber-coated cord.
US2401291A (en) * 1943-06-11 1946-05-28 Du Pont Racket string
US3120144A (en) * 1958-07-23 1964-02-04 Bayer Willi String and process for its manufacture
US3330689A (en) * 1963-06-20 1967-07-11 Deering Milliken Res Corp Latex coated fibrous material and method of making same
US3738096A (en) * 1970-11-09 1973-06-12 Ashaway Line & Twine Mfg Manufacture and construction of strings

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238262A (en) * 1978-07-26 1980-12-09 Fishel Clark W Applying particles and adhesive to racquet strings
EP0049196A1 (en) * 1980-09-26 1982-04-07 Cousin Freres S.A. Strings of synthetic materials for tennis rackets
US4391088A (en) * 1982-01-13 1983-07-05 United States Tennis Gut Association, Inc. String for sports rackets
EP0086285A1 (en) * 1982-02-10 1983-08-24 Gosen Co., Ltd. Improvements in and relating to racket strings
US4377620A (en) * 1982-06-21 1983-03-22 Edward Alexander Gut for tennis racket and the like and method of making same
US4449353A (en) * 1982-08-06 1984-05-22 United States Tennis Gut Association, Inc. Gut string for sports rackets
US4586708A (en) * 1984-03-09 1986-05-06 Imperial Chemical Industries Plc Sports racket strings of a synthetic thermoplastic polymeric material
US5376412A (en) * 1990-11-26 1994-12-27 Regnault Reynolds S.A. Process for manufacturing strings to be subjected to tensile stress, in particular strings for rackets and musical instruments, and strings obtained thereby
US5327714A (en) * 1992-07-30 1994-07-12 Prince Manufacturing, Inc. Synthetic string for sporting application
US5601762A (en) * 1993-12-14 1997-02-11 Ferrari Importing Company Method for enhancing the properties of a string used in a stringing device
US5570883A (en) * 1994-07-04 1996-11-05 Csabai; Julius S. Sport racket with string stabilization and friction coating
WO2008122141A1 (en) * 2007-04-10 2008-10-16 Suermeci Buenyamin Product for roughening the strings of tennis, badminton and squash rackets and for keeping them rough and method for producing said product
US20100117026A1 (en) * 2007-04-10 2010-05-13 Suermeci Buenyamin Product for roughening the strings of tennis, badminton and squash rackets and for keeping them rough and method for producing said product
US8084084B2 (en) * 2007-04-10 2011-12-27 Suermeci Buenyamin Product for roughening the strings of tennis, badminton and squash rackets and for keeping them rough and method for producing said product
KR101214874B1 (en) 2010-07-26 2012-12-24 조진영 Manufacturing method for rarket and rarket manufactrued therefrom
US20190118045A1 (en) * 2016-04-27 2019-04-25 Yonex Co., Ltd. String set, main string, and cross string
WO2020031529A1 (en) * 2018-08-10 2020-02-13 株式会社ゴーセン Racket string and method of manufacturing same
JP6722835B1 (en) * 2018-08-10 2020-07-15 株式会社ゴーセン Racket string and manufacturing method thereof
US20210268340A1 (en) * 2020-02-28 2021-09-02 Sumitomo Rubber Industries, Ltd. Racket
US20220249919A1 (en) * 2021-02-09 2022-08-11 Conduit Space Recovery Systems LLC Strings for a tennis racket

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