Patent ID: 7704396
Filing Date: 2010-04-27
Classification: B01D,F16H

Abstract:
1. A fluid filter comprising: a cylindrical housing having a first housing end and a second housing end; a fluid outlet centrally disposed at the first housing end; a fluid inlet annularly disposed about the fluid outlet at the first housing end; a first gasket disposed at an interior surface of the first housing end between the fluid outlet and fluid inlet; a full flow filter disposed within the cylindrical housing, the full flow filter being cylindrical in shape and concentrically disposed in axial alignment with a central axis of the cylindrical housing; a bypass filter being disposed within the full flow filter, the bypass filter being cylindrical in shape and concentrically disposed in axial alignment with the central axis of the cylindrical housing, a fluid impermeable end member capping an end of the bypass filter at the first housing end; a bypass outlet centrally disposed at the second housing end and communicating with an interior space defined by the bypass filter; a second gasket disposed proximal to the second housing end and between the bypass filter and the bypass outlet; a first spring disposed within said full flow filter at the first housing end, the first spring being configured to abut the fluid impermeable end member to urge the bypass filter towards the second housing end, the first spring being configured to urge the bypass filter into sealing contact with the second gasket; and a second spring disposed at the second housing end, the second spring being configured to urge both the full flow filter and the bypass filter towards the first housing end, the second spring being configured to urge the full flow filter into sealing contact with the first gasket.