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US 7,479,069 B2Granted
Insert for altering the stiffness of a golf club shaft
AssigneeMichael H. L. Cheng
InventorsMichael H. L. Cheng, Eric M. Jones
Life of this patent
Estimating the term…
Abstract
A golf accessory is provided that includes an insert for removably and interchangeably mounting within an interior of a golf club shaft for interchangeably altering a predetermined stiffness or bending moment of the club shaft.
Claims34
An assembly for use with a tool having tool threads, the assembly comprising:
- an elongate golf club shaft defining a hollow interior and a predetermined stiffness or bending moment;
- an insert having an inner wall and adapted to be removably and interchangeably disposed within the hollow interior of the golf club shaft and to interchangeably alter the predetermined stiffness or bending moment of the golf club shaft;
- and
- a plug fixedly attached to the inner wall of the insert and including a threaded opening configured to engage the tool threads.
1 more element
An assembly for use with a tool having a tool key shaft, the assembly comprising:
- an elongate golf club shaft defining a hollow interior and a predetermined stiffness or bending moment;
- an insert having an inner wall and adapted to be removably and interchangeably disposed within the hollow interior of the golf club shaft and to interchangeably alter the predetermined stiffness or bending moment of the golf club shaft;
- and
- a plug fixedly attached to the inner wall of the insert and including a keyway configured to engage the tool key shaft.
1 more element
An assembly comprising:
- a golf club including a club head and an elongate hollow golf club shaft attached to the club head and defining a hollow interior, a predetermined stiffness or bending moment, a length and an upper end;
- an elongate hollow insert defining an inner wall, a length and an upper end and adapted to be removably and interchangeably disposed within the hollow interior of the golf club shaft and to interchangeably alter the predetermined stiffness or bending moment of the golf club shaft;
- a tool including a threaded portion with tool threads;
- a plug fixedly attached to the inner wall of the insert and including a threaded opening configured to engage the tool threads;
- and
- a grip that covers the upper ends and an upper portion of the lengths of the golf club shaft and the insert.
3 more elements
An assembly comprising:
- a golf club including a club head and an elongate hollow golf club shaft attached to the club head and defining a hollow interior, a predetermined stiffness or bending moment, a length and an upper end;
- an elongate hollow insert defining an inner wall, a length and an upper end and adapted to be removably and interchangeably disposed within the hollow interior of the golf club shaft and to interchangeably alter the predetermined stiffness or bending moment of the golf club shaft;
- a tool including a tool key shaft;
- a plug fixedly attached to the inner wall of the insert and including a keyway configured to engage the tool key shaft;
- and
- a grip that covers the upper ends and an upper portion of the lengths of the golf club shaft and the insert.
3 more elements
Dependencies are inferred from the claim text.