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US 6,257,997 B1Granted
Adjusting stiffness and flexibility in sports equipment
AssigneeAlliance Design and Development Group, Inc.
InventorsWilliam C. Doble, Robert Walsh, Guy Wheeler, Peter Tarlton
Life of this patent
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Abstract
A sports apparatus with variable directions of stiffness and flexibility, including sports equipment having a body; and a flexure resistance spine that is elongated and is stiffer and less flexible in one direction than in a different direction. The spine is fixed against rotation at two spaced apart locations along the body.
Claims26
A sports apparatus with variations in stiffness and flexibility, comprising:
- sports equipment having a body;
- an elongated flexure resistance spine that is stiffer and less flexible in one direction than in a different direction;
- and
- locking elements that secure the spine against rotation at two spaced apart locations along the body.
1 more element
A sports apparatus with variations in stiffness and flexibility, comprising:
- sports equipment having a body;
- an element imparting stiffness and flexibility variations to the body so the sports equipment becomes more stiff and less flexible in one direction than in a different direction;
- and
- locking elements arranged to secure the spine against rotation at two spaced apart locations along the body.
1 more element
A method of varying stiffness and flexibility, comprising:
- providing sports equipment having a body;
- imparting stiffness and flexibility variations to the body so the sports equipment becomes more stiff and less flexible in one direction than in a different direction;
- and
- securing the element against rotation at two spaced apart locations along the body.
1 more element
Dependencies are inferred from the claim text.