SE8802104D0 - RACKET DEVICE - Google Patents

RACKET DEVICE

Info

Publication number
SE8802104D0
SE8802104D0 SE8802104A SE8802104A SE8802104D0 SE 8802104 D0 SE8802104 D0 SE 8802104D0 SE 8802104 A SE8802104 A SE 8802104A SE 8802104 A SE8802104 A SE 8802104A SE 8802104 D0 SE8802104 D0 SE 8802104D0
Authority
SE
Sweden
Prior art keywords
string
strings
designed
spring
tension
Prior art date
Application number
SE8802104A
Other languages
Swedish (sv)
Other versions
SE8802104L (en
SE461571B (en
Inventor
B Pettersson
Original Assignee
Tooling Promotion Ab
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 Tooling Promotion Ab filed Critical Tooling Promotion Ab
Priority to SE8802104A priority Critical patent/SE461571B/en
Publication of SE8802104D0 publication Critical patent/SE8802104D0/en
Priority to EP19890906859 priority patent/EP0420891A1/en
Priority to PCT/SE1989/000273 priority patent/WO1989011892A1/en
Publication of SE8802104L publication Critical patent/SE8802104L/en
Publication of SE461571B publication Critical patent/SE461571B/en

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
    • A63B51/12—Devices arranged in or on the racket for adjusting the tension of the strings

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Springs (AREA)
  • Golf Clubs (AREA)

Abstract

Device for rackets (1) which have a frame (4) in which a number of intersecting strings (5, 6) are tensioned. Spring elements (7) are arranged on some of the strings (5, 6) for exerting a spring force on the strings in their longitudinal direction for the purpose of counteracting changes in the tension of the strings. The spring elements (7) are situated inside the frame (4) and are designed to produce, in the string (5) in question, an arched deviation from its essentially rectilinear extension. The spring element (7) is designed with a central arched part over which the string runs and which is designed to be deformed in an elastically flexible manner in order to counteract changes in the tension of the string. Two end parts of the spring element each have an opening through which the string extends. The end parts are curved in the opposite direction to the central part forming, outside the associated openings away from the convex bearing surface of the central part, likewise convex bearing surfaces for the string, over which the latter is deflected.
SE8802104A 1988-06-06 1988-06-06 RACKET DEVICE SE461571B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8802104A SE461571B (en) 1988-06-06 1988-06-06 RACKET DEVICE
EP19890906859 EP0420891A1 (en) 1988-06-06 1989-05-18 Device for rackets
PCT/SE1989/000273 WO1989011892A1 (en) 1988-06-06 1989-05-18 Device for rackets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802104A SE461571B (en) 1988-06-06 1988-06-06 RACKET DEVICE

Publications (3)

Publication Number Publication Date
SE8802104D0 true SE8802104D0 (en) 1988-06-06
SE8802104L SE8802104L (en) 1989-12-07
SE461571B SE461571B (en) 1990-03-05

Family

ID=20372532

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802104A SE461571B (en) 1988-06-06 1988-06-06 RACKET DEVICE

Country Status (3)

Country Link
EP (1) EP0420891A1 (en)
SE (1) SE461571B (en)
WO (1) WO1989011892A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR20060100637A (en) * 2006-11-23 2008-06-18 Ευσταθιος Χαριτωνος Χαριτωνιδης Anti-vibration means of a cord for raquets with cords - a system calibrating the vibration absorption.
CN103191552A (en) * 2013-02-12 2013-07-10 陇东学院 Tennis racket

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1558507A (en) * 1921-05-26 1925-10-27 Ryder Ambrose Tennis racket
GB225934A (en) * 1923-09-12 1924-12-12 Robert Rose Improvements in tennis racquets and the like
SE8300936L (en) * 1983-02-21 1984-08-22 Gunnar Bjorhn DEVICE FOR TENSION ADJUSTING STRENGTHS WERE FOR THE BALL GAMES AND BADMINTON RACKETS

Also Published As

Publication number Publication date
SE8802104L (en) 1989-12-07
EP0420891A1 (en) 1991-04-10
WO1989011892A1 (en) 1989-12-14
SE461571B (en) 1990-03-05

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