Abstract: A filter has an elongated filter envelope with an inner pocket containing filter material and configured to receive fluid filtered by the filter envelope. The filter envelope has a bent position defined by a port portion and a loop portion, the loop portion and the port portion overlapping each other at least partially. A port is attached to the filter envelope proximate the port end and is configured to be connected to a hydraulic device and to allow fluid to be released from the pocket. The filter envelope has a periphery with a sealed rim and a slit splitting a portion of the rim so as to form a flexible retention element unitarily attached to the loop portion of the filter envelope. The retention element is positioned around one of the port and the port portion of the filter envelope to retain the filter envelope in the bent position.

Abstract: An in-tank fluid filter has a filter body made of porous material and a plastic outlet port attached to the filter body for connecting the filter to a pump. A plastic retainer is integrally formed on the outlet port, the retainer comprising a tab extending in a plane perpendicular to the flow axis, the tab having a first surface proximate the pump and a second surface remote from the pump, the tab having an aperture extending from the first surface to the second surface with an effective cross-section at the first surface that is larger than the post cross-section and that is reduced toward the second surface to an effective cross-section that is smaller than the post cross-section.

Abstract: An in-tank fluid filter has a filter body made of porous material and a plastic outlet port attached to the filter body for connecting the filter to a pump. A plastic retainer is integrally formed on the outlet port, the retainer comprising a tab extending in a plane perpendicular to the flow axis, the tab having a first surface proximate the pump and a second surface remote from the pump, the tab having an aperture extending from the first surface to the second surface with an effective cross-section at the first surface that is larger than the post cross-section and that is reduced toward the second surface to an effective cross-section that is smaller than the post cross-section.

Abstract: A filter has an elongated filter envelope with an inner pocket containing filter material and configured to receive fluid filtered by the filter envelope. The filter envelope has a bent position defined by a port portion and a loop portion, the loop portion and the port portion overlapping each other at least partially. A port is attached to the filter envelope proximate the port end and is configured to be connected to a hydraulic device and to allow fluid to be released from the pocket. The filter envelope has a periphery with a sealed rim and a slit splitting a portion of the rim so as to form a flexible retention element unitarily attached to the loop portion of the filter envelope. The retention element is positioned around one of the port and the port portion of the filter envelope to retain the filter envelope in the bent position.