EP0104670A1 - Honeycomb reinforced racquet frames - Google Patents

Honeycomb reinforced racquet frames Download PDF

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Publication number
EP0104670A1
EP0104670A1 EP83200297A EP83200297A EP0104670A1 EP 0104670 A1 EP0104670 A1 EP 0104670A1 EP 83200297 A EP83200297 A EP 83200297A EP 83200297 A EP83200297 A EP 83200297A EP 0104670 A1 EP0104670 A1 EP 0104670A1
Authority
EP
European Patent Office
Prior art keywords
honeycomb
frames
reinforced
honeycomb reinforced
racquet frames
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.)
Withdrawn
Application number
EP83200297A
Other languages
German (de)
French (fr)
Inventor
Jan E. Vanhoutte
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.)
FN Herstal SA
Original Assignee
FN Herstal SA
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
Priority claimed from BE2/59816A external-priority patent/BE894253A/en
Application filed by FN Herstal SA filed Critical FN Herstal SA
Publication of EP0104670A1 publication Critical patent/EP0104670A1/en
Withdrawn legal-status Critical Current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
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • 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
    • A63B60/02—Ballast means for adjusting the centre of mass

Definitions

  • the present invention relates to an improvement to racket frames reinforced by honeycomb.
  • racket frames comprising a honeycomb core - in one or more pieces - surrounded by a metallic envelope, made of synthetic material or of composite material.
  • rackets are currently on the market which consist of two identical metallic shells enclosing a metallic honeycomb ribbon, the whole being assembled by gluing (see Belgian patent n ° 856.598).
  • the improvement according to the invention consists in filling at least one carefully selected cell of said honeycomb with a high density substance.
  • a high density substance By the latter expression is meant a substance whose specific weight is at least 2 kg / dm 3 .
  • a mixture of an organic binder and a zinc powder charge will advantageously be chosen.
  • the filling of the selected cell (s) will take place at the most appropriate stage of the manufacturing of the frame, after deployment of the honeycomb and either before its insertion in a tubular envelope, respectively its coating in the case of a composite manufacturing, either after its installation in one of the above-mentioned half-shells.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

This is characterised in that it consists in filling at least one selected cell in the said honeycomb with a substance whose density is at least 2kg/dm<3>.

Description

La présente invention concerne un perfectionnement aux cadres de raquettes renforcés par nid d'abeille.The present invention relates to an improvement to racket frames reinforced by honeycomb.

On a déjà proposé différentes réalisations de cadres de raquettes, comprenant une âme en nid d'abeille - en une ou plusieurs pièces - entourée d'une enveloppe métallique, en matière synthétique ou en matière composite.Various designs of racket frames have already been proposed, comprising a honeycomb core - in one or more pieces - surrounded by a metallic envelope, made of synthetic material or of composite material.

Ainsi, des raquettes sont actuellement dans le commerce qui sont constituées de deux coquilles métalliques identiques enserrant un ruban de nid d'abeille métallique, le tout étant assemblé par collage (voir brevet belge n° 856.598).Thus, rackets are currently on the market which consist of two identical metallic shells enclosing a metallic honeycomb ribbon, the whole being assembled by gluing (see Belgian patent n ° 856.598).

On a également proposé de réaliser des cadres de raquettes composites, dans lesquels sont noyés deux rubans de nid d'abeille situés de part et d'autre d'une âme en matière synthétique gonflante (voir demande de brevet européen n° 82201002.1).It has also been proposed to produce composite racket frames, in which are embedded two honeycomb ribbons located on either side of a core made of swelling synthetic material (see European patent application No. 82201002.1).

Dans une demande de brevet belge, déposée simultanément avec la présente demande, la Demanderesse décrit un élément tubulaire renforcé par nid d'abeille, présentant des propriétés mécaniques particulièrement intéressantes dans un grand nombre d'applications dont, entre autres, la réalisation de cadres de raquettes.In a Belgian patent application, filed simultaneously with the present application, the Applicant describes a tubular element reinforced by honeycomb, having particularly advantageous mechanical properties in a large number of applications including, among others, the production of frames of snowshoes.

Les différents modes de construction brièvement décrits ci- dessus ont comme point commun que l'on peut, en cours de fabrication, déterminer avec une précision relativement grande, la position finale de chacun des alvéoles du nid d'abeille, dans le cadre terminé.The various construction methods briefly described above have in common that one can, during manufacture, determine with relatively great precision, the final position of each of the honeycomb cells, in the finished frame.

Partant de cette constatation, la Demanderesse a imaginé un moyen simple d'influencer dans tout sens désiré, l'équilibre, respectivement le moment d'inertie transversal de la raquette.Starting from this observation, the Applicant has imagined a simple means of influencing in any desired direction, the balance, respectively the transverse moment of inertia of the racket.

Ainsi donc, le perfectionnement selon l'invention consiste à remplir au moins un alvéole soigneusement sélectionné dudit nid d'abeille d'une substance à densité élevée. Par cette dernière expression, il faut entendre une substance dont le poids spécifique est au moins 2 kg/dm3.Thus, the improvement according to the invention consists in filling at least one carefully selected cell of said honeycomb with a high density substance. By the latter expression is meant a substance whose specific weight is at least 2 kg / dm 3 .

Ladite sélection de ou des alvéoles à remplir tiendra évidemment compte, outre l'effet recherché, des contraintes impo-sées par les passages à prévoir dans le panier du cadre pour l'encordage.Said selection of cell or cells to be filled will obviously take into account, in addition to the desired effect, the constraints imposed by the passages to be provided in the frame basket for roping.

La sélection de ladite matière à haute densité s'effectuera, dans chaque application particulière considérée, en fonction de la ou des matières constitutives du nid d'abeille et de l'enveloppe.The selection of said high density material will be carried out, in each particular application considered, as a function of the material or materials constituting the honeycomb and the envelope.

Ainsi, dans le cas d'une âme et d'une enveloppe en alliage léger, à base d'aluminium, on choisira avantageusement un mélange d'un liant organique et d'une charge de poudre de zinc.Thus, in the case of a core and a light alloy casing, based on aluminum, a mixture of an organic binder and a zinc powder charge will advantageously be chosen.

Le remplissage de ou des alvéoles sélectionnés s'effectuera au stade le plus approprié de la fabrication du cadre, après déploiement du nid d'abeille et soit avant son insertion dans une enveloppe tubulaire, respectivement son enrobage dans le cas d'une fabrication composite, soit après sa pose dans une des demi-coquilles sus-mentionnées.The filling of the selected cell (s) will take place at the most appropriate stage of the manufacturing of the frame, after deployment of the honeycomb and either before its insertion in a tubular envelope, respectively its coating in the case of a composite manufacturing, either after its installation in one of the above-mentioned half-shells.

Claims (2)

1.- Perfectionnement aux cadres de raquettes renforcés par nid d'abeille, caractérisé en ce qu'il consiste à remplir au moins un alvéole sélectionné dudit nid d'abeille, d'une substance dont le poids spécifique est au moins 2 kg/dm3.1.- Improvement to snowshoe frames reinforced with honeycomb, characterized in that it consists in filling at least one selected cell of said honeycomb, with a substance whose specific weight is at least 2 kg / dm 3 . 2.- Perfectionnement selon la revendication 1, pour raquettes ayant un nid d'abeille et une enveloppe en alliage d'aluminium, caractérisé en ce que ladite substance est constituée par un mélange d'un liant organique et de poudre de zinc.2. Improvement according to claim 1, for snowshoes having a honeycomb and an aluminum alloy shell, characterized in that said substance consists of a mixture of an organic binder and zinc powder.
EP83200297A 1982-08-31 1983-02-28 Honeycomb reinforced racquet frames Withdrawn EP0104670A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2059816 1982-08-31
BE2/59816A BE894253A (en) 1982-08-31 1982-08-31 Reinforced sports racket frame - has honeycomb structure part of which is filled with dense material

Publications (1)

Publication Number Publication Date
EP0104670A1 true EP0104670A1 (en) 1984-04-04

Family

ID=3865610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200297A Withdrawn EP0104670A1 (en) 1982-08-31 1983-02-28 Honeycomb reinforced racquet frames

Country Status (3)

Country Link
US (1) US4505480A (en)
EP (1) EP0104670A1 (en)
JP (1) JPS5944278A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717152A (en) * 1986-03-05 1988-01-05 Kessler Fred B Racket grip
US5464210A (en) * 1994-08-24 1995-11-07 Prince Sports Group, Inc. Long tennis racquet
US9399155B2 (en) 2012-11-27 2016-07-26 Wilson Sporting Goods Co. Optimized thermoplastic racquet
US9192822B2 (en) 2012-11-27 2015-11-24 Wilson Sporting Goods Co. Optimized thermoplastic racquet
US9199135B2 (en) 2012-11-27 2015-12-01 Wilson Sporting Goods Co. Optimized thermoplastic racquet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066260A (en) * 1976-10-15 1978-01-03 Rodgers Jr Robert E Metal-plastic composite racquet
LU78855A1 (en) * 1977-07-08 1978-06-09 Fn Int PERFECTED RACKET

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095615A (en) * 1966-04-30 1967-12-20 John Henry Onions Improvements in or relating to golf balls
US3822762A (en) * 1971-09-23 1974-07-09 Mc Donnell Douglas Corp Decorative acoustic panel
US4085934A (en) * 1972-08-03 1978-04-25 Roy Alexander Churchward Golf club
US3998024A (en) * 1975-08-04 1976-12-21 H. H. Robertson Company Double-skin insulated building panel
DE2554267A1 (en) * 1975-12-03 1977-06-16 Kuebler & Co STICK FOR TENNIS O.DGL. GAMES
DE2719649A1 (en) * 1976-05-05 1977-11-24 Paul Lafourcade FRAME FOR BALL RACKETS, IN PARTICULAR TENNIS RACKETS AND THE METHOD OF ITS MANUFACTURING
JPS5327831A (en) * 1976-08-24 1978-03-15 Metoro Rejiyaa Kk Metallic racket for play
US4175745A (en) * 1977-07-08 1979-11-27 Fn International Societe Anonyme Racket

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066260A (en) * 1976-10-15 1978-01-03 Rodgers Jr Robert E Metal-plastic composite racquet
LU78855A1 (en) * 1977-07-08 1978-06-09 Fn Int PERFECTED RACKET

Also Published As

Publication number Publication date
US4505480A (en) 1985-03-19
JPS5944278A (en) 1984-03-12

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840313

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850522

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VANHOUTTE, JAN E.