Patent ID: 7713032
Filing Date: 2010-05-11
Classification: F03B,F04B,F05B,Y02E,Y10T

Abstract:
1. A high pressure fluid pump, comprising: a pump housing adapted for attachment to a foundation on a bed of a body of water, the pump housing defining a pump chamber having an inlet and an outlet; upper and lower stops disposed in the pump chamber; an impeller having a one-way valve mechanism, the impeller being capable of reciprocating in the pump chamber between the upper and lower stops; a filter disposed at a lower end of the pump chamber adjacent the inlet; a float adapted for riding on the surface of the body of water, both vertically and horizontally; a tether connecting the float to the impeller, the tether extending through the pump housing; an outlet pipe connected to the pump chamber outlet; a backflow prevention valve disposed in the outlet pipe; a backwash and flushing pipe connected to the outlet pipe; and a motorized valve disposed in the backwash and flushing pipe, the backwash and flushing pipe directing pressurized fluid from the outlet pipe to the filter in the pump chamber to flush and clean the filter.