GB581496A - Improvements in and relating to racquets and strings therefor - Google Patents

Improvements in and relating to racquets and strings therefor

Info

Publication number
GB581496A
GB581496A GB11057/44A GB1105744A GB581496A GB 581496 A GB581496 A GB 581496A GB 11057/44 A GB11057/44 A GB 11057/44A GB 1105744 A GB1105744 A GB 1105744A GB 581496 A GB581496 A GB 581496A
Authority
GB
United Kingdom
Prior art keywords
cord
coating
twisted together
june
turns
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.)
Expired
Application number
GB11057/44A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB581496A publication Critical patent/GB581496A/en
Expired legal-status Critical Current

Links

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

Abstract

581,496. Racquet strings. DU PONT DE NEMOURS & CO., E. I. June 9, 1944, No. 11057. Convention date, June 11, 1943. Drawings to Specification. [Class 109] A racquet string comprises a cord formed of a synthetic linear condensation product and composed of strands twisted together, each strand consisting of filaments twisted together, the cord having an adherent abrasion-resistant and fatigue-resistant coating. Both the cord core and the coating may be formed of a synthetic superpolyamide, such as polyhexamethylene adipamide, and the coating may constitute from 20 per cent. to 40 per cent. by weight of the cord. In one method of making the string, six 210-denier 1-turn S-filaments are twisted together 6.2 turns S to form a strand, and six such strands are twisted together 2.7-turns Z to form the cord. The coating is applied in a number of separate coats, and the coating solution consists of an interpolyamide prepared from hexamethylenediammonium adipate, hexamethylenediammonium sebacate and caprolactam. The polyhexamethylene adipamide forming the cord may be treated in the relaxed condition with boiling water or with aqueous phenol to improve the impact strength.
GB11057/44A 1943-06-11 1944-06-09 Improvements in and relating to racquets and strings therefor Expired GB581496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US581496XA 1943-06-11 1943-06-11

Publications (1)

Publication Number Publication Date
GB581496A true GB581496A (en) 1946-10-15

Family

ID=22015006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11057/44A Expired GB581496A (en) 1943-06-11 1944-06-09 Improvements in and relating to racquets and strings therefor

Country Status (1)

Country Link
GB (1) GB581496A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895261C (en) * 1951-07-01 1953-11-02 Aurnhammer Geb Towing rope for motor vehicles and process for its manufacture
GB2126614A (en) * 1982-09-02 1984-03-28 Explosifs Prod Chim Racket string

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895261C (en) * 1951-07-01 1953-11-02 Aurnhammer Geb Towing rope for motor vehicles and process for its manufacture
GB2126614A (en) * 1982-09-02 1984-03-28 Explosifs Prod Chim Racket string

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