Methods of adjusting stiffness and flexibility in devices, apparatus and equipment
AssigneeAlliance Design and Development Group, Inc.
InventorsRobert Walsh, Peter B. Tarlton
Life of this patent
Estimating the term…
Abstract
A resilient rod that provides adjustable directional resistance is disclosed. In one aspect of the invention, a resistance level may be determined based on a thickness of the rod and a position of an applied force with respect to a fulcrum point. In another aspect of the invention, at least one spine may be attached to the beam to increase a diameter of the beam along one axis. The resistance level may be determined based on the thickness of the rod, the position of the applied force and an orientation of the at least one spine with regard to the direction of the applied force. In other aspects of the invention, the resilient rods may be incorporated into a golf club that provides for adjustable resistance levels.
Claims18
An equipment comprising:
- a hollow shaft,
- a rod, positionable within said hollow shaft;
- a cap positioned on an upper end of the hollow shaft retaining the rod within the hollow shaft, the cap comprising:
- a worm gear configured to:
- rotate a screw thread adjustment mechanism incorporated into the cap, the adjustment mechanism altering a position of the rod within the hollow shaft.
A golf club comprising:
- a hollow shaft comprising a first end having attached a golf head thereto and a second end;
- a rod, having a circular cross-section, incorporated within the hollow shaft, said circular rod providing 360 degree symmetry about a longitudinal axis of the hollow shaft;
- a flexible material positioned near the first end of the hollow shaft and in contact with the rod;
- and
- a cap fixed on the second end, the cap
- comprising:
- means for engaging a screw thread assembly, the screw thread assembly configured to:
- raise and lower the rod within the hollow shaft;
- and
- a plurality of indicia indicating a position of the rod within the hollow shaft.
Dependencies are inferred from the claim text.