Patent ID: 7832232
Filing Date: 2010-11-16
Classification: F25B,Y10T

Abstract:
1. A flow control device for providing bi-directional flow control, the device comprising: a generally cylindrical cartridge having an internal chamber and a cartridge orifice axially positioned through a portion of the cartridge, the internal chamber in fluid connection with the cartridge orifice; a single, generally cylindrical piston movable within said chamber, the piston having a piston orifice therethrough, the piston orifice axially positioned through the piston; and the piston having a first position wherein the piston orifice provides a smallest diameter flow path through the cartridge, and a second position wherein the cartridge orifice provides a smallest diameter flow path through the cartridge; an anti-rattle mechanism for reducing rattle of the piston within the internal chamber of the cartridge, wherein the anti-rattle mechanism comprises a sleeve having at least two arms generally extending radially inward of the sleeve, the at least two arms each having a generally axially extending portion engaging the piston, and wherein each of the at least two arms includes a stop portion extending radially inward from the respective arm to limit the movement of the piston.