Patent ID: 6796323
Filing Date: 2004-09-28
Classification: G05D,Y10T

Abstract:
A valve which selectively supplies and releases fluid to and from a fluidic reservoir, comprising:a housing which defines an interior chamber; an annular first seat surface supported within the housing in communication with the interior chamber, the first seat surface defining a first seat orifice; a valve assembly configured for sliding movement within the housing, the valve assembly comprising a hollow stem with a distal end having an annular second seat surface, the second seat surface extendable through the first seat orifice; and a sealing member disposed within the interior chamber, wherein in a first valve position the second seat surface extends through the first seat surface and abuttingly supports the sealing member to establish a fluidic seal between the sealing member and the second seat surface, permitting inlet fluid to pass from the interior chamber into a gap between the sealing member and the first seat surface and on to charge the reservoir, and wherein in a second valve position the second seat surface is retracted away from the first seat surface so that the first seat surface abuttingly supports the sealing member to establish a fluidic seal between the sealing member and the first seat surface, permitting outlet fluid to pass from the reservoir into a gap between the sealing member and the second seat surface to discharge the reservoir.