Human powered watercraft

Details Human powered watercraft Human powered watercraft

2007-10-23

2010-06-15

Swinehart, Ed (Department: 3617)

Marine propulsion

Operator powered drive for propelling means

Sliding handle or pedal

C440S015000

Reexamination Certificate

active

07736205

ABSTRACT:
Human powered watercrafts, propulsion systems, and methods of propulsion are provided. A watercraft having an upper deck is configured with a cam plate having a pedal above the deck and a plate and cam below the deck, the cam engaging a cam follower of a fin bar, the fin bar having a substantially vertical propelling fin at an aft end and a pivot to the craft at a forward end. In another embodiment the craft receives two cam plates with pedals, a plurality of fin bars and two propelling fins, all operatively interconnected by a pulley and belt such that a leg thrust upon a pedal opens the fins and an opposite leg thrust upon the opposing pedal closes the fins, propelling the craft. In still another embodiment, an open, hollow surfboard remove-ably receives the propulsion system and a user activate-able buoyancy compensator making a submersible human powered watercraft.

REFERENCES:
patent: 3254622 (1966-06-01), Bramson
patent: 3361106 (1968-01-01), Hildebrand
patent: 5816871 (1998-10-01), Proverbio

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