William James Sobkow

US Patent:

62314564, May 15, 2001

Filed:

Apr 5, 1999

Appl. No.:

9/286551

Inventors:

Graham Rennie - Shelby Township MI
William J. Sobkow - Plymouth MI

International Classification:

A63B 5310
A63B 5312

US Classification:

473316

Abstract:

A vibration damping insert adapted to be positioned within the hollow tubular shaft of a golf club. The insert includes a central rod member sized to fit within the hollow shaft of the club and a plurality of circumferentially spaced fins extending radially outwardly from and substantially coextensive with the rod member, with the fins sized and configured to engage the inner tubular surface of the shaft. The fins form a part of an annular outer body separate from the central rod member and formed of a material having a durometer hardness less than the durometer hardness of the central rod member. The central rod member and annular outer body are preferably formed in a coextrusion process.