Abstract: A tray insert for supporting filter media in an engine or transmission oil filter. The tray insert is preferably made from plastic and can preferably rest on the bottom of the filter housing. Alternatively, the tray insert can preferably be made of plastic or metal and rests on at least the lip portion of the filter housing.

Abstract: A lip seal has an internal spring element disposed in an elastomeric ring.

Abstract: A fluid filter includes a bypass valve and a pleated media surrounded by a thermoplastic frame. A fluid filter, includes a housing having an inlet and an outlet, a media disposed within the housing, a bypass valve disposed within the housing adjacent the media wherein the bypass valve includes a valve frame, a valve lid that couples to the valve frame, a valve pan that couples to the frame, and a seal door disposed between the valve lid and the valve frame. A method of filtering fluid, includes providing a bypass valve wherein the bypass valve includes a bypass valve seal door, raising the bypass valve seal door along a guide disposed on the bypass valve, passing fluid through the raised bypass valve seal door, lowering the bypass valve seal door along the guide disposed on the bypass valve and ceasing passing fluid through the bypass valve.

Abstract: A filter for use in engines or transmissions is provided comprising an inlet-side cover having a wave-like region along the periphery of the inlet-side cover, an outlet-side cover having a wave-like region along the periphery of the outlet-side cover where the outlet-side cover wave-like region is in a complementary alignment with the inlet-side cover wave-like region and filter media fixed in a non-planar configuration between the wave-like regions of the inlet-side and outlet-side covers.

Abstract: A filter for use in engines or transmissions is provided comprising an outlet-side cover having a first wave-like region along the periphery of the outlet-side cover, a filter media tray having a second wave-like region along the periphery of the filter media tray wherein the filter media tray second wave-like region is in a generally complementary alignment with the first wave-like region of the outlet-side cover, a filter media fixed in a non-planar configuration between the first wave-like region of the outlet-side cover and the second wave-like region of the filter media, and an inlet-side cover joined to the outlet-side cover, wherein the filter media and the filter media tray is between the inlet-side cover and the outlet-side cover.

Abstract: A tray insert for supporting filter media in an engine or transmission oil filter. The tray insert is preferably made from plastic and can preferably rest on the bottom of the filter housing. Alternatively, the tray insert can preferably be made of plastic or metal and rests on at least the lip portion of the filter housing.

Abstract: A tray insert for supporting filter media in an engine or transmission oil filter. The tray insert is preferably made from plastic and can preferably rest on the bottom of the filter housing. Alternatively, the tray insert can preferably be made of plastic or metal and rests on at least the lip portion of the filter housing.

Abstract: A tray insert for supporting filter media in an engine or transmission oil filter. The tray insert is preferably made from plastic and can preferably rest on the bottom of the filter housing. Alternatively, the tray insert can preferably be made of plastic or metal and rests on at least the lip portion of the filter housing.

Abstract: A tray insert for supporting filter media in an engine or transmission oil filter. The tray insert is preferably made from plastic and can preferably rest on the bottom of the filter housing. Alternatively, the tray insert can preferably be made of plastic or metal and rests on at least the lip portion of the filter housing.