Patent ID: 8105052

Claim:
A wave and tide actuated submersible pump for use in an open body of water, said wave and tide actuated submersible pump comprising a pump cylinder ( 7 ) having an open top end and a closed bottom end ( 13 ), said cylinder ( 7 ) is affixed to a structure located in an open body of water, at least one inlet check valve ( 11 ) and at least one outlet check valve ( 12 ) connected to openings in the pump cylinder ( 7 ) near the lower end of said cylinder ( 7 ), said at least one inlet check valve ( 11 ) allowing for the intake of water from the body of water and said at least one outlet check valve ( 12 ) controlling the flow of water from the pump to a remote location, a ballast-weighted piston ( 8 ) vertically reciprocally movable within the pump cylinder ( 7 ) and forming a pump chamber defined by a sidewall of said cylinder, said ballast-weighted piston and the bottom end of said cylinder, said piston ballast-weight is sufficient to pump the fluid in which it is contained while returning said piston to its' lowest point of travel, a buoy ( 1 ) connected to the ballast-weighted piston ( 8 ) by a flexible connector ( 4 ) for driving the ballast-weighted piston ( 8 ) on an upward stroke in response to wave action, said ballast-weighted piston ( 8 ) being driven in a downward stroke under force of gravity, a means for restricting the upward stroke of the ballast-weighted piston ( 8 ) within the pump cylinder ( 7 ), a hawser guide ( 5 ), ( 54 ) and wear ring ( 20 ), ( 55 ) are mounted to the open top of said pump cylinder, said flexible connector ( 4 ) passing through the top of said cylinder ( 7 ) and said wear ring ( 20 ), ( 55 ) and being attached to the top of the ballast-weighted piston ( 8 ) at a first end and to a lifting eye of the buoy ( 1 ) at a second end.