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US 12,503,210 B2Granted
Paddle with nonlinear shaft
OwnerShane Cheninventor
Life of this patent
Estimating the term…
Abstract
A paddle for propelling a watercraft that has a nonlinear shaft which allows the paddle blade to be positioned underneath the watercraft and brought very close to, or directly under, the centerline of the craft. This has advantages in efficiency of propulsion and speed of forward travel by greatly reducing unwanted yaw and lateral travel.
Claims11
A paddle for propelling a watercraft, comprising:
- a shaft having a force application section, including at least two force application points for execution of a paddle stroke, and a displaced section, the force application section defining a paddle axis passing through the at least two force application points, and the displaced section extending laterally away from the paddle axis, viewed from a rear elevation cross-section with the paddle axis oriented vertically and in a straightforward paddle stroke;
- and
- a blade coupled to a distal end of the displaced section shaft, extending laterally from both sides of the paddle axis and also extending in a direction perpendicular to the lateral extension when viewed from a rear elevation cross-section with the paddle axis oriented vertically and in a straightforward paddle stroke.
A paddle device for human propulsion of a watercraft, comprising:
- a first shaft section that can be gripped by a user at at least two grip points and that defines a paddle axis passing through the at least two grip points of the first shaft section and is configured to be oriented by a user, when grasped, for execution of a paddle stroke;
- a second shaft section coupled to the first shaft section that extends away from the paddle axis and is configured to fit around a watercraft during a forward stroke by a user thereon;
- and
- a blade coupled to an end of the second shaft section;
- and
- wherein, when the paddle axis is vertical and the paddle is viewed from a rear elevation cross-section in a straight-forward paddle stroke, the paddle axis intersects the blade.
3 more elements
Dependencies are inferred from the claim text.