Patent ID: 6769385
Filing Date: 2004-08-03
Classification: F01L,F02B

Abstract:
A velocity control system, comprising:a housing defining an opening, a chamber adapted to receive a fluid, a first fluid passageway connecting the opening with the chamber, a second fluid passageway connecting the opening with the chamber, and a third fluid passageway connecting the opening with the chamber; a piston slidably disposed in the chamber and moveable from a first piston position to a second piston position, the movement of the piston from the first piston position to the second piston position forcing fluid from the chamber at a first flow rate during movement of the piston through a first travel distance and at a second flow rate during movement of the piston through a second travel distance, wherein the first flow rate is greater than the second flow rate; a check valve adapted to prevent fluid from flowing from the chamber through the first fluid passageway when the piston is moving from the first piston position to the second piston position; and a control valve in fluid communication with the opening and having a first position where fluid is allowed to flow from the chamber and a second position where fluid is selectively blocked from flowing from the chamber.