IE801541L - Tennis racket - Google Patents

Tennis racket

Info

Publication number
IE801541L
IE801541L IE801541A IE154180A IE801541L IE 801541 L IE801541 L IE 801541L IE 801541 A IE801541 A IE 801541A IE 154180 A IE154180 A IE 154180A IE 801541 L IE801541 L IE 801541L
Authority
IE
Ireland
Prior art keywords
racket
weights
ball
straps
intrinsic
Prior art date
Application number
IE801541A
Other versions
IE49957B1 (en
Original Assignee
Battelle Development Corp
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 Battelle Development Corp filed Critical Battelle Development Corp
Publication of IE801541L publication Critical patent/IE801541L/en
Publication of IE49957B1 publication Critical patent/IE49957B1/en

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
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

A tennis racket comprises dynamic weights (6) distributed symmetrically relative to the longitudinal axis of the racket between the throat and the transverse axis of the head and suspended by arcuate straps (7) glued to the racket frame (2), the weights being displaceable in a direction perpendicular to the plane of the stringed area (3). The combination of weights and straps is adapted for having an intrinsic vibration frequency about 1.4 to 2 times the fundamental vibration frequency of the racket, such that when the weights are vibrated at their intrinsic frequency (by a ball striking the racket), the vibration of the racket is damped by energy transfer to the weights, and yet energy is also returned to the racket as a reaction in the direction of the ball's flight before the ball leaves the racket. The angular stability of the racket is improved over either fixed weights or dynamic weights having frequencies outside the critical range. [WO8100214A1]
IE1541/80A 1979-07-26 1980-07-24 Tennis racket IE49957B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6105279A 1979-07-26 1979-07-26

Publications (2)

Publication Number Publication Date
IE801541L true IE801541L (en) 1981-01-26
IE49957B1 IE49957B1 (en) 1986-01-22

Family

ID=22033325

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1541/80A IE49957B1 (en) 1979-07-26 1980-07-24 Tennis racket

Country Status (6)

Country Link
EP (1) EP0032506B1 (en)
JP (1) JPS56500955A (en)
CA (1) CA1140608A (en)
DE (1) DE3067259D1 (en)
IE (1) IE49957B1 (en)
WO (1) WO1981000214A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161391B (en) * 1984-06-22 1988-01-20 Dunlop Ltd Games racket
US5098098A (en) * 1988-07-07 1992-03-24 Petralia John W Shock and vibration absorbant sports racket
US5039097A (en) * 1990-04-12 1991-08-13 Bartlett William L Snap-on weight for a tennis racket
WO1995004575A1 (en) * 1993-08-05 1995-02-16 Kenneth Godfrey Degaris Counterweight balancing system for games racquets
US5599018A (en) * 1994-03-31 1997-02-04 Radel; Harry Strung racket
FR2751235B1 (en) * 1996-05-07 1998-10-09 Bianchi Jean Claude ANTI-VIBRATION DEVICE FOR BALL GAME RACKET FRAME
GB2334894A (en) * 1998-03-04 1999-09-08 Dunlop Slazenger Group Ltd Mounting weights on games rackets
JP4615674B2 (en) * 2000-05-29 2011-01-19 Ｓｒｉスポーツ株式会社 Racket frame
EP2036594A1 (en) * 2007-09-12 2009-03-18 Yuan Min An Enterprise Co., Ltd. Multifunction racket

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1526734A (en) * 1923-04-04 1925-02-17 Frederick B Andrews Tennis racket
US2823037A (en) * 1956-02-16 1958-02-11 Ferte Louis G La Vibratory impulse generator for golf club
US3801099A (en) * 1971-06-23 1974-04-02 J Lair Tennis racquet
US3907292A (en) * 1972-02-05 1975-09-23 James P Moreland Dynamically variable tennis racket
US3941380A (en) * 1972-07-31 1976-03-02 Patentex S.A. Tennis rackets and similar implements with vibration damper
US4057250A (en) * 1975-09-05 1977-11-08 Kuban William G Tennis racket construction
DE2554267A1 (en) * 1975-12-03 1977-06-16 Kuebler & Co STICK FOR TENNIS O.DGL. GAMES
FR2352220A1 (en) * 1976-05-21 1977-12-16 Malnar Leon Vibration damping for tennis rackets - uses hollow frame filled with natural or synthetic shock absorbent
JPS53131133A (en) * 1977-04-21 1978-11-15 Zenzou Yamamoto Golf club

Also Published As

Publication number Publication date
EP0032506A1 (en) 1981-07-29
CA1140608A (en) 1983-02-01
JPS56500955A (en) 1981-07-16
EP0032506A4 (en) 1982-05-26
IE49957B1 (en) 1986-01-22
WO1981000214A1 (en) 1981-02-05
DE3067259D1 (en) 1984-05-03
EP0032506B1 (en) 1984-03-28

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