Water walker's propulsion pole

Details Water walker's propulsion pole Water walker's propulsion pole

1988-10-24

1990-01-30

Basinger, Sherman D.

Marine propulsion

Oar or paddle

416 86, B63H 1604

Patent

active

048970620

ABSTRACT:
The subject pole is used to help propel a person on ski floats or water walkers. Each pole comprises a shaft with a hand grip at the top end and, in order from the bottom end: a small float, a propulsion apparatus and a larger float. The floats are bodies of revolution. The propulsion apparatus is a shell of revolution with a semi-elliptical shape and the long axis of the ellipse coincident with the longitudinal axis of the shaft and the open face of the shell facing the bottom end of the pole. The shell is slotted in four places to form four petals. The ends of the petals are interconnected by a garter spring. Also each petal is connected by two ties to a flange on the small float. In use the pole is moved fore and aft in alternate thrust and return strokes. It is at an angle to the water surface with the grip end higher and planes on the water surface in the return strokes and submerges to a depth limited by the buoyancy of the larger float on the thrust strokes.

REFERENCES:
patent: 2589698 (1952-03-01), Jackson
patent: 4527984 (1985-07-01), Gilbert
patent: 4578038 (1986-03-01), Lenten
patent: 4804345 (1989-02-01), Lee

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