Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2007-05-01
2007-05-01
Blau, Stephen (Department: 3711)
Games using tangible projectile
Golf
Club or club support
C473S313000, C473S314000, C473S340000, C473S345000, C473S316000
Reexamination Certificate
active
10420104
ABSTRACT:
Golf clubs, of putter and wood-type especially, each include an attachment between shaft and club head which is of a compliance to allow the club head to behave more closely as a ‘free-body’ in providing vertical gear-effect when striking the ball. The compliance is related to freeing the club head for rotation about an axis35which extends through the center of mass31with an orientation perpendicular to the shaft axis37in a plane parallel to the shaft axis37and containing the heel-toe axis34through the center of mass31. In this regard, the compliance about axis35is not less than the force-couple bending compliance of a length of 1000/K, or 3000/K, or more preferably 10000/K, millimeters of the shaft measured from the tip-end. The rotational axis35is spaced by less than 0.33K millimeters, or not more than 4,25 or less than 2 millimeters, from the shaft axis37. The center of mass31is located not less than 10 millimeters, and preferably not less than 15 millimeters, behind the impact face, and is not more than 13 millimeters, and preferably not more than 10 millimeters, above the sole of the club. The spacing DD between the shaft-attachment38and the rotational axis35is less than 2K millimeters or preferably less than K millimeters.
REFERENCES:
patent: 1525137 (1925-02-01), Lawton
patent: 3693978 (1972-09-01), East
patent: 4157830 (1979-06-01), Taylor et al.
patent: 4725062 (1988-02-01), Kinney, III
patent: 5094457 (1992-03-01), Kinoshita
patent: 5301941 (1994-04-01), Allen
patent: 5451048 (1995-09-01), Magamoto
patent: 5505447 (1996-04-01), Mockovak
patent: 5685784 (1997-11-01), Butler
patent: 5749793 (1998-05-01), Lucetti
patent: 5851160 (1998-12-01), Rugge et al.
patent: 5888149 (1999-03-01), Allen
patent: 5931742 (1999-08-01), Nishimura et al.
patent: 5935020 (1999-08-01), Stites et al.
patent: 5961397 (1999-10-01), Lu et al.
patent: 6033318 (2000-03-01), Drajan, Jr. et al.
patent: 6074310 (2000-06-01), Ota
patent: 6296576 (2001-10-01), Capelli
patent: 6352482 (2002-03-01), Jacobson et al.
patent: 2003/0013547 (2003-01-01), Helmstetter et al.
patent: 2 225 726 (1990-06-01), None
patent: 2 303 796 (1997-03-01), None
patent: 2 331 939 (1999-06-01), None
patent: 2381204 (2003-04-01), None
patent: 4-82574 (1992-03-01), None
patent: 98/28051 (1998-07-01), None
Ashby, M.A., “Materials Selection in Mechanical Design”, 2d ed., Oxford: Butterworth-Heinemann, 1992, pp. 46-48.
Gere, J. M., “Mechanics of Materials”, Pacific Grove, USA: Brooks/Cole, 2001, pp. 891-892.
“Rules of Golf” (extract).
Cochran, A. and J. Stobbs,Search for the Perfect Swing, Chicago: Triumph Books, 1968, p. 147.
Blau Stephen
Davis & Bujold & Daniels, P.L.L.C.
LandOfFree
Golf clubs does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Golf clubs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Golf clubs will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3723135