DE3023720A1 - Tennis racquet with double frame construction - is designed to counteract deformation forces during striking of ball - Google Patents

Tennis racquet with double frame construction - is designed to counteract deformation forces during striking of ball

Info

Publication number
DE3023720A1
DE3023720A1 DE19803023720 DE3023720A DE3023720A1 DE 3023720 A1 DE3023720 A1 DE 3023720A1 DE 19803023720 DE19803023720 DE 19803023720 DE 3023720 A DE3023720 A DE 3023720A DE 3023720 A1 DE3023720 A1 DE 3023720A1
Authority
DE
Germany
Prior art keywords
ball
frame
racket
racquet
designed
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.)
Ceased
Application number
DE19803023720
Other languages
German (de)
Inventor
Björn 3500 Kassel Frobel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19803023720 priority Critical patent/DE3023720A1/en
Publication of DE3023720A1 publication Critical patent/DE3023720A1/en
Ceased 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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/038—Frames with head subframes for replacing strings
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/028—Means for achieving greater mobility of the string bed

Abstract

The tennis racquet is equipped with devices to counteract the deformation of the racquet frame caused by striking the ball. The device to counteract the deformation force exerted on the racquet consists of a double frame construction of the racquet made up from an outer racquet frame section and an inner racquet frame section which is strung. The inner frame may be fastened to the outer frame at the end remote from the handle, so that when the ball is struck the inner frame bends in the opposite direction to the outer frame. Flexibly values may be chosen so that there is no net change in angle of the inner frame when hitting the ball.

Description

Dem Tennisspieler wird beim Schlag mit seinem TennisschlägerThe tennis player is hit with his tennis racket

die Information über Stellung und Bewegung durch den Schlägerstiel auf den Schlägergriff und vom Schlägergriff zu seiner Hand übertragen.the information about position and movement through the stick handle transferred to the racket grip and from the racket grip to his hand.

Durch die auftreffende bzw. beschleunigende Masse des Tennisballes kommt es immer zu einer Deformation des Schlägers, dessen Stärke zu einer nicht vorausberechenbaren Fehlerquelle wird, weil die Geschwindigkeit des Balles durch z.B. sogenanntes Anschneiden durch den Gegner mehr oder weniger stark beeinträchtigt werden kann.Due to the impacting or accelerating mass of the tennis ball there is always a deformation of the racket, the strength of which is not Predictable source of error is because the speed of the ball is through E.g. so-called cutting is more or less impaired by the opponent can be.

Da der Aufprallwinkel des Balles auf den Schlägerkopf bei nicht angeschnittenem Ball gleich dem Abprallwinkel ist, beide aber durch das Verwinden des Schlägers falsch zum Schlägergriff und somit zum Spieler übertragen werden, kommt es bei jedem Schlag zu einer unerwünschten Verfälschung der Ballflugbahn.Since the angle of impact of the ball on the club head when not trimmed Ball is equal to the rebound angle, but both are due to the twisting of the club wrongly transferred to the club grip and thus to the player, it happens with everyone Impact to an undesired falsification of the ball trajectory.

Alle auf dem Markt befindlichen Schläger, Fig. 1) lassen sich in 3 Teile zergliedern.All rackets on the market, Fig. 1) can be divided into 3 Dissecting parts.

Schlägergriff Schlägerstiel Schlägerrahmen. Racket grip racket shaft racket frame.

0 Fig. 2 stellt einen handelsüblichen Schläger um 90 gedreht dar. 0 Fig. 2 shows a commercially available racket rotated by 90.

Trifft der Ball auf den bisher üblichen Schläger, kommt es zu der in Fig. 3) gezeigten Deformation, a) gibt die Anflugbahn des Balles an.If the ball hits the hitherto usual racket, it comes to the in Fig. 3) shown deformation, a) indicates the approach path of the ball.

Der abprallende Ball ändert seine Abflugbahn entsprechend der auftretenden Verformung Fig. 4).The rebounding ball changes its take-off path according to the one occurring Deformation Fig. 4).

Deutlich ist zu erkennen, daß sich der Abflugwinkel gegenüber dem Schlägergriff von ursprünglich 900 (Zeichnung b) durch die Deformation verändert hat. Ein Verbiegen des Schlägers durch den auftreffenden Ball'rist jedoch technisch nicht auszuschalten.It can be clearly seen that the take-off angle is opposite to the Racket grip from originally 900 (drawing b) changed due to the deformation Has. Bending of the racket by the impacting ball'rist, however, is technical not to turn off.

Die Möglichkeit diese Fehlerquelle auszuschließen, besteht jedoch bei dem erfundenen Doppelrahmen-KomDensationsschläger.However, it is possible to exclude this source of error with the invented double-frame compensation racket.

Dieser Schläger läßt sich in 4 Teile zerteilen, Fig. 5): Schlägergriff Schlägerstiel äußerer Schlägerrahmen innerer Schlägerrahmen.This racket can be divided into 4 parts, Fig. 5): Racket handle Club shaft outer racket frame inner racket frame.

Fig. 6) zeigt den Doppelrahmen-Kompensationsschläger um 90 gedreht.Fig. 6) shows the double frame compensation racket rotated by 90.

Der auftreffende Ball verbiegt den Schläger, jedoch bleit die Parallelität des bespannten inneren Rahmens zum Schlägergriff gewahrt. Der Ballaufprallwinkel ist bei senkrechtem Auftreffen gleich dem Abprallwinkel. Durch das Teilen der beiden Rahmen bis zum güngstigsten Punkt trifft die Kommen sation bei jeder Krafteinwirkung zu. Wird der Schläger stark verbogen, biegt sich der innere Rahmen entsprechend weit in entgegengesetzter Richtung.The hitting ball bends the racket, but the parallelism remains of the covered inner frame to the racket handle. The ball impact angle is equal to the rebound angle for vertical impact. By sharing the two The comment hits the frame down to the most favorable point with every application of force to. If the racket is severely bent, the inner frame will bend accordingly far in the opposite direction.

Zeichnenerklärungen: a : Ballanflugbahn b : Ballabflugbahn Schlägergriff Schlägerstiel Schlägerrahmen (zu bespannen) äußerer Schlägerrahmen (Halterung für den inneren, zu bespannenden Schlägerrahmen) Doppelrahmenkompensatjons schläger P 30 23 720.8 LeerseiteDrawing explanations: a: Ball approach path b: Ball departure path Racket handle Racket shaft Racket frame (to be strung) Outer racket frame (holder for the inner racket frame to be strung) Double frame compensation racket P 30 23 720.8 Empty side

Claims (2)

Patentansprüche 1. Ballschläger, dadurch gekennzeichnet, daß die von dem auftreffenden Ball verursachte Deformation des Ballschlägers durch konstruktive Maßnahmen bezüglich des Aufprall- und Abprallwinkels voll oder zu einem gewissen Teil aufgehoben wird.Claims 1. Ball racket, characterized in that the of the impacting ball caused deformation of the ball racket by constructive Measures regarding the angle of impact and rebound fully or to a certain extent Part is canceled. 2. Anspruch nach 1, dadurch gekennzeichnet, daß der Ballschläger einen Doppelrahmen aufweist.2. Claim according to 1, characterized in that the racket has a Has double frame.
DE19803023720 1980-06-25 1980-06-25 Tennis racquet with double frame construction - is designed to counteract deformation forces during striking of ball Ceased DE3023720A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803023720 DE3023720A1 (en) 1980-06-25 1980-06-25 Tennis racquet with double frame construction - is designed to counteract deformation forces during striking of ball

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803023720 DE3023720A1 (en) 1980-06-25 1980-06-25 Tennis racquet with double frame construction - is designed to counteract deformation forces during striking of ball

Publications (1)

Publication Number Publication Date
DE3023720A1 true DE3023720A1 (en) 1982-01-21

Family

ID=6105402

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803023720 Ceased DE3023720A1 (en) 1980-06-25 1980-06-25 Tennis racquet with double frame construction - is designed to counteract deformation forces during striking of ball

Country Status (1)

Country Link
DE (1) DE3023720A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008068714A1 (en) * 2006-12-08 2008-06-12 European Sports Merchandising Bv A racquet
CN107080926A (en) * 2017-06-26 2017-08-22 邬惠林 A kind of dabber has the racket in knee at two

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE358586C (en) * 1922-09-12 Rich Berthold Springy ball bat
GB431394A (en) * 1934-01-04 1935-07-04 Frank Wordsworth Donisthorpe Improvements in or relating to rackets or bats for tennis and like games
DE1919461A1 (en) * 1969-04-17 1970-11-19 Botho Treumann Tennis racket
DE2116920A1 (en) * 1971-04-07 1972-10-19 Reinhold Sommer Racket
US4094505A (en) * 1977-01-04 1978-06-13 Beall Jr Thomas E Tennis racket
FR2373302A1 (en) * 1976-12-10 1978-07-07 Formati Eugene Double frame tennis racquet - has inner stringed frame easily removable from outer frame with usual handle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE358586C (en) * 1922-09-12 Rich Berthold Springy ball bat
GB431394A (en) * 1934-01-04 1935-07-04 Frank Wordsworth Donisthorpe Improvements in or relating to rackets or bats for tennis and like games
DE1919461A1 (en) * 1969-04-17 1970-11-19 Botho Treumann Tennis racket
DE2116920A1 (en) * 1971-04-07 1972-10-19 Reinhold Sommer Racket
FR2373302A1 (en) * 1976-12-10 1978-07-07 Formati Eugene Double frame tennis racquet - has inner stringed frame easily removable from outer frame with usual handle
US4094505A (en) * 1977-01-04 1978-06-13 Beall Jr Thomas E Tennis racket

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008068714A1 (en) * 2006-12-08 2008-06-12 European Sports Merchandising Bv A racquet
CN107080926A (en) * 2017-06-26 2017-08-22 邬惠林 A kind of dabber has the racket in knee at two

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8131 Rejection