Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2008-03-24
2011-10-04
Blau, Stephen L. (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S309000, C473S318000
Reexamination Certificate
active
08029382
ABSTRACT:
The subject golf clubs have a shaft and clubhead. The shaft has a tip-end coupled to the clubhead, a butt-end, a reduced-EI portion located adjacent the tip-end, and a remaining portion extending between the butt-end and the reduced-EI portion. The portions are coupled together at an interface. The remaining portion exhibits a respective rate of stiffness reduction as a function of distance from the butt-end. The reduced-EI portion is typically shorter than and has less stiffness than the remaining portion. A stiffener is coupled to the shaft, such as in the reduced-EI portion, to add stiffness locally. The reduced-EI portion exhibits a respective rate (which can be zero) of stiffness reduction as a function of distance toward the tip-end. These rates can be similar or different. The interface can exhibit a greater rate in stiffness reduction than the other portions. The stiffeners can be user-selectable, from a kit supplied with the club, for example. The clubhead can be removable from the shaft to facilitate stiffener exchange.
REFERENCES:
patent: 4319750 (1982-03-01), Roy
patent: 5439219 (1995-08-01), Vincent
patent: 5931744 (1999-08-01), Hackman
patent: 6113508 (2000-09-01), Locarno et al.
patent: 6139444 (2000-10-01), Renard et al.
patent: 6241623 (2001-06-01), Laibangyang
patent: 6719645 (2004-04-01), Kouno
patent: 6908401 (2005-06-01), Cheng
patent: 7070512 (2006-07-01), Nishio
patent: 7083529 (2006-08-01), Cackett et al.
patent: 7140398 (2006-11-01), Dodge et al.
patent: 7150692 (2006-12-01), Hong
patent: 7479069 (2009-01-01), Cheng et al.
patent: 7524248 (2009-04-01), Kumamoto
patent: 7614963 (2009-11-01), Cheng
patent: 7625297 (2009-12-01), Simonis
patent: 2003/0083146 (2003-05-01), Shimizu et al.
patent: 2005/0079925 (2005-04-01), Cheng et al.
patent: 2006/0084520 (2006-04-01), Lindner
patent: 2006/0122013 (2006-06-01), Dodge et al.
patent: 2006/0211510 (2006-09-01), Ashida et al.
patent: 2007/0111815 (2007-05-01), Cheng
patent: 2008/0280695 (2008-11-01), Hocknell et al.
patent: 2009/0305808 (2009-12-01), Burnett et al.
patent: 11099230 (1999-04-01), None
patent: 2004290391 (2004-10-01), None
Beach Todd P.
DeShiell Drew Tom
Blau Stephen L.
Klarquist & Sparkman, LLP
Taylor Made Golf Company Inc.
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