Filter assembly with spring loaded valve
AssigneeSunstrand Corporation
InventorSatish S. Shah
Life of this patent
Estimating the term…
Abstract
The problem of protecting a spring (44) of a spring loaded valve member (34) in a filter assembly (10) is solved by providing a valve body (12) defining a valve seat (20), with the valve member movable in the valve body to and from a closed position against the valve seat. The spring is disposed in a cavity (46) in the valve body, the spring biasing the valve member toward its closed position against the valve seat. The cavity has a mouth located in the path of movement of the valve member for closing by the valve member to capture and isolate the spring when the valve member moves to an open position away from the valve seat. A filter bowl (22) is removably attached to the valve body for automatically opening the valve member in response to attaching the bowl to the valve body.
Claims17
A filter assembly, comprising a valve body having an inlet and an outlet an passage means communicating between the inlet and the outlet, a valve stop in the passage means defining a valve seat, a valve member movable in the valve body to and from a closed position against the valve seat, a bowl removably attached to the valve body, a filter disposed in the bowl communicating with the passage means, valve actuating means operatively associated between the bowl and the valve member for moving the valve member to an open position in response to attaching the bowl to the valve body, spring means for biasing the valve member toward its closed position against the valve seat, and receptacle means in the valve body for positioning and receiving the spring means, the receptacle means being sealed by said valve member when the valve member is in its open position to completely isolate the spring means from any fluid flowing through the filter assembly.
A filter assembly, comprising a valve body defining a valve seat, a valve member movable in the valve body to and from a closed position against the valve seat, resilient means disposed in a cavity in the valve body for biasing the valve member toward its closed position against the valve seat, the cavity having a mouth located in the path of movement of the valve member for sealing by the valve member to completely isolate the resilient means from any fluid flowing through the filter assembly when the valve member moves to an open position away from the valve seat, and a filter bowl removably attached to the valve body in communication with the valve seat.
A filter assembly, comprising a valve body defining a valve seat, a valve member movable in the valve body to and from a closed position against the valve seat, resilient means disposed in a cavity in the valve body for biasing the valve member toward its closed position against the valve seat, a bowl removably attached to the valve body, valve actuating means operatively associated between the bowl and the valve member for moving the valve member to an open position in response to attaching the bowl to the valve body, and the cavity having a mouth located in the path of movement of the valve member for sealing by the valve member to completely isolate the resilient means when the bowl moves the valve member to its open position away from the valve seat.
Dependencies are inferred from the claim text.