Filter element with a combined endplate/lid with a central hole

摘要

A filter element is described that includes an endplate that also serves as the lid or cover for the filter housing. The combined endplate/lid includes a central hole that is closed to fluid flow when the proper filter element-housing combination is used. Various embodiments for different functional uses of the central hole are also described.

主权项

1. A filter element, comprising:
filtration media arranged into a ring having a first end and a second end and circumscribing a central cavity having a longitudinal axis; a first endplate sealingly attached to the first end of the filtration media; a housing lid sealingly attached to the second end of the filtration media so as to form a second endplate, the housing lid includes:
a hole extending through the housing lid, the hole opens into and is in fluid communication with the central cavity, and the hole is in fluid communication with an exterior of the filtration media;a protrusion that projects above a top surface of the housing lid in a direction away from the central cavity and away from the first endplate;a detachable connection mechanism that detachably attaches the housing lid to a housing that is configured to receive the filter element, anda float installed in the hole that is movable within the hole in a direction that is substantially parallel to the longitudinal axis.