Tennis racket having alveoli filled honeycomb reinforcement

• US 4,505,480 A
• Filed: 03/23/1983
• Issued: 03/19/1985
• Est. Priority Date: 08/31/1982
• Status: Expired due to Fees

• Current Assignee: Fabrique Nationale Herstal EN Abrege FN Societe Anonyme
• Original Assignee: Fabrique Nationale Herstal SA
• Inventors: Vanhoutte, Jan E.
• Primary Examiner(s): Pinkham, Richard C.
• Assistant Examiner(s): Schneider, Matthew L.
• Application Number:
  US06/477,960
• Time in Patent Office: 727 Days
• Field of Search: 273/73 F, 273/73 H, 273/73 C, 273/73 R, 273/73 K, 273/73 G, 273/73 J, 273/73 K, 273/76, 273/78 R, 273/82 R, 273/169, 273/171, 273/167 F, 273/67 A, 273/230 , 273/82 A, 273/220, 428/117, 428/593
• US Class Current: 473/537
• CPC Class Codes: A63B 49/10 made of non-metallic materials, other than wood
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

The present invention relates to an improvement in racket frames reinforced with a honeycomb, characterized in that it comprises filling up at least one selected alveolus of the said honeycomb with a substance having a density of at least 2 kg/dm3.

Claims

1. A frame for a tennis racket defined in part by a honeycomb core, the improvement comprising at least one selected alveolus of the honeycomb core being filled with a substance including a material having a density of at least two kilograms per cubic decimeter and a binder for influencing the equilibrium of the racket.

2. The frame of claim 1 wherein plural selected alveoli of the honeycomb are filled with the substance.

3. The frame of claim 1 wherein the substance includes a mixture of zinc powder and an organic binder.

4. A frame for a tennis racket defined in part by a honeycomb core surrounded by a casing of aluminum alloy, the improvement comprising at least one selected alveolus of the honeycomb core being filled with a mixture of zinc powder and an organic binder.