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US 7,726,346 B2Granted
Outer tubular reinforcement member
OwnerWilliam C. Doble, David J. Dodgeinventors
Life of this patent
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Abstract
A tubular structural member that provides adjustable directional resistance to a device. When orientated in a certain manner with respect to the direction of use, the tubular structural member will provide a different stiffness to the device it is affixed. The tubular structural member may be integrated with these devices so that these devices can have adjustable resistance and stiffness.
Claims7
A tubular structural member comprising:
- a tube having an internal cavity, a longitudinal axis, a flexural plane, and a stiff plane, the flexural plane and the stiff plane extending radially from the longitudinal axis, the tube having a flexural resistance that is greatest in the stiff plane and least in the flexural plane;
- and
- a device having a bending plane and a reinforcement area, the reinforcement area having an outer diameter that matches the inner diameter of the tubular structural member,
- wherein the tubular structural flexural plane is placed over the reinforcement area and aligned radially on the reinforcement area so as to provide the device with flexural resistance along the bending plane by positioning the stiff plane and flexural plane with respect to the bending plane to provide a desired flexural resistance.
1 more element
Dependencies are inferred from the claim text.