Ski propulsion poles
OwnerRiccardo Tesaninventor
Life of this patent
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Abstract
Manually operable ski propulsion poles or paddles, for use in water skiing or snow skiing or the like, are provided with a lower medium-engaging portion, an upwardly extending shaft, a handle at the upper portion of the shaft, and arm supporting means pivotally secured to the shaft and adapted to engage the arm of an operator gripping the handle. The arm supporting means may include biasing means such as a spring loading, urging the shaft in a direction towards the arm of the operator. Such arm supporting means materially reduce the effort necessary in operating the paddles, both during the propulsion stroke and during the return of the paddle to its initial position after a propulsion stroke.
Claims10
A propulsion pole or paddle for use by an operator in self-propulsion on a mobile conveyance relative to a medium, said paddle including a lower portion for engaging the medium on propulsive thrust;
- a shaft extending upwardly from said lower portion and having at its upper portion a handle adapted to be gripped by the hand of an operator;
- an arm supporting means pivotally secured to said shaft for angular movement relative thereto substantially in a single plane, and including biasing means urging the shaft in a direction towards the arm of the operator when gripping said handle, said arm supporting means also being adapted to releasably engage the arm of an operator when the operator grips said handle.
Dependencies are inferred from the claim text.