Patent ID: 6648011
Filing Date: 2003-11-18
Classification: A47G,A61J,A61M,F16K,Y10S,Y10T

Abstract:
A valve comprising:a housing; a first fluid conduit in fluid communication with the housing; a valve member mounted for reciprocating movement within the housing, the valve member defining a second fluid conduit therethrough, the valve member being moveable from a first position where the first fluid conduit is in communication with the second fluid conduit to provide a third conduit through the housing, to a second position, where the first fluid conduit is not in communication with the second fluid conduit; and a vacuum conduit in fluid communication with a vacuum chamber defined by the housing, wherein the valve member is responsive to a negative pressure applied to the housing through the vacuum conduit to move the valve member from the second position to the first positions, wherein in the first position, the first fluid conduit is not in communication with the vacuum chamber.