Patent ID: 8246825
Filing Date: 2012-08-21
Classification: B01D

Abstract:
1. A filter assembly for filtering particulate contaminants from a fluid, comprising: a generally cylindrical filter unit with one end closed and the other end open with a generally circular first fluid port and a generally annular second fluid port in a coaxial arrangement; a filter head comprising a generally circular fluid interface aligned along a generally horizontal axis with a generally circular first fluid port and a generally annular second fluid port in a coaxial arrangement to mate with the corresponding filter unit first and second fluid ports and further comprising a generally cylindrical sleeve extending generally horizontally from the interface that has an outer surface, an inner surface, an open end for receiving the open end of the filter unit, a vent port aligned with a vertical axis horizontally displaced from the interface extending through an upper portion of the sleeve from its outer surface to its inner surface and a drain port aligned with the vertical axis extending through a lower portion of the sleeve from its outer surface to its inner surface; and a coupling for securing the open end of the filter unit to the filter head sleeve to seal the sleeve vent and drain ports and mate the corresponding first and second fluid ports of the filter unit and filter head to establish fluid communication between them; wherein loosening the coupling allows the filter unit to slide away from the filter head sufficiently to establish fluid communication between the sleeve vent and drain ports along the vertical axis and the fluid ports in the filter unit and filter head.