EP 0171033 A3 19870513 - VIBRATION-DAMPING DEVICE PARTICULARLY FOR TENNIS RACKETS
Title (en)
VIBRATION-DAMPING DEVICE PARTICULARLY FOR TENNIS RACKETS
Publication
Application
Priority
IT 4161884 A 19840809
Abstract (en)
[origin: EP0171033A2] The device comprises a holder (7, 43) for application to the shaft of a tennis racket, particularly either (7) in a front region (1) or (43) in the handle region (3) extending between the handgrip (2) and oval frame (1). The holder carries damping cells (9, 44) formed preferably by cylindrical chambers with their axes perpendicular to the plane of the racket and being part-filled with a heavy liquid or completely filled with two liquids having different densities or with a granulate medium. Vibration generated in the racket result in the heavy liquid or granulate medium being shaken and dissipate energy, thus damping such vibration.
IPC 1-7
IPC 8 full level
A63B 49/04 (2006.01); A63B 59/00 (2006.01)
CPC (source: EP)
A63B 60/02 (2015.10); A63B 60/54 (2015.10); A63B 60/28 (2015.10); A63B 60/52 (2015.10)
Citation (search report)
- [X] DE 2503941 A1 19760805 - WIMPEX A WIESE FA
- [Y] US 4179121 A 19791218 - KELMANSKI PEDRO [AR]
- [Y] GB 407983 A 19340326 - GRAHAM SHURMUR BUSH
- [X] US 4057250 A 19771108 - KUBAN WILLIAM G
- [X] DE 2741741 A1 19780330 - KUEBLER & CO [DE]
- [X] US 4330125 A 19820518 - SASSLER MARVIN L
Designated contracting state (EPC)
AT DE FR
DOCDB simple family (publication)
EP 0171033 A2 19860212; EP 0171033 A3 19870513; IT 1181005 B 19870923; IT 8441618 A0 19840809; IT 8441618 A1 19860209
DOCDB simple family (application)
EP 85109672 A 19850801; IT 4161884 A 19840809