Games using tangible projectile – Golf – Practice swingable implement or indicator associated with...
Reexamination Certificate
1999-01-22
2001-04-10
Chapman, Jeanette (Department: 3711)
Games using tangible projectile
Golf
Practice swingable implement or indicator associated with...
C473S246000, C473S248000
Reexamination Certificate
active
06213889
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates in general to a golf club, and in particular to an improved golf club putter having a head which is adjustably mounted with respect to the shaft of the golf club.
Golf club putters generally include a shaft, a hand grip attached to one end of the shaft, and a putter head attached to the other end of the shaft. Commonly, hand grips include formations, such as a flattened area, formed thereon for proper positioning of a player's hands on the hand grip. The formations of the hand grip should be positioned correctly with respect to the putter head for accurate operation of the golf club putter. However, because of the varying grips, stances, and swings of different players, there is not one ideal shaft position which would accommodate every player. Also, the desired length of the shaft from the hand grip to the putter head differs from person to person.
In most golf club putters, the putter head is permanently attached to the shaft so that the axis of the shaft is at a predetermined lie angle. The lie angle is generally defined as the angle between the axis of the shaft and a plane defined by a bottom surface of the putter head in a direction towards or away from the player holding the golf club putter. However, due to differences in heights, stances, and swings of different players, there is not one ideal lie angle which would accommodate every player. Also, because the putter head is permanently attached to the shaft, the striking surface of the putter head is at a fixed loft angle. The loft angle is generally defined as the angle between the striking surface and the axis of the shaft. However, due to differences in heights, stances, and swings of different players, there is not one ideal loft angle which would accommodate every player. Also, it is sometimes desirable to adjust the orientation of the head of the putter relative to the shaft.
BRIEF SUMMARY OF THE INVENTION
This invention relates in general to an improved golf club which can be adjusted to change the loft angle or the lie angle between the shaft and the putter head of the golf club.
In one embodiment of the invention, the golf club includes a head having a striking face and a shaft having first and second ends such that the shaft defines an axis. The club further includes a hosel assembly including a member having first and second ends. The first end of the member is fastened to the head. The hosel assembly also includes a hosel having first and second ends. The first end of the hosel is fastened to the shaft. The second end of the hosel is pivotally fastened to the second end of the member. A cam member is pivotally fastened to a first one of the hosel and the member about an axis. The cam member has a cam surface offset from the axis. The cam surface is engaged with a second one of the hosel and the member. The rotation of the cam member about the axis causes the cam surface to pivot the member relative to the hosel to change the lie or loft angle of the putter head relative to the shaft.
Various objects and advantages of this invention will become apparent to those skilled in the art from the following detailed description of the preferred embodiment, when read in light of the accompanying drawings.
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Blau Stephen L.
Chapman Jeanette
MacMillan Sobanski & Todd LLC
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