Patent ID: 8501001
Filing Date: 2013-08-06
Classification: B01D,Y10T

Abstract:
1. A fluid filter comprising: a filter element having a media disposed between two endplates, the media allows a working fluid to be filtered through the media, one of the two endplates includes an opening that allows the working fluid to flow into or out of the filter media during operation, the other of the two endplates includes a connection structure; a flow passage to filter the working fluid, the flow passage being through the media and the endplate with the opening; a cover that houses the filter element, the cover having an opening in fluid communication with the opening of the one endplate and having a fill opening proximate the other of the two endplates; and a cap that closes the cover at the opening proximate the other of the two endplates, the cap has a connection structure to connect to the connection structure of the other of the two endplates, wherein the cover includes wall surfaces, the wall surfaces being retained between the cap and the other of the two endplates and by connection of the connection structures of the cap and the other of the two endplates, and wherein the other of the two endplates having the connection structure is a structure with no flow passage for the working fluid during operation, wherein the other of the two endplates having the connection structure includes a check valve that closes over time during operation until the media needs to be replaced, and wherein the working fluid does not flow through the check valve during operation.