Abstract: A fluid filter element for circular locking engagement with a filter support, the fluid filter element including a filter medium arranged about a longitudinal axis, first and second end caps arranged at opposite cylindrical ends of the filter medium and sealed thereto, at least one locking protrusion located on the second end cap for rotatably locking the fluid filter to the filter support and at least one releasable retainer located on the second end cap and associated with at the at least one locking protrusion for retaining the at least one locking protrusion in locking engagement with the filter support and being operative, when released, to allow rotatable unlocking of the fluid filter element.

Abstract: A fluid filter element for circular locking engagement with a filter support, the fluid filter element including a filter medium arranged about a longitudinal axis, first and second end caps arranged at opposite cylindrical ends of the filter medium and sealed thereto, at least one locking protrusion located on the second end cap for rotatably locking the fluid filter to the filter support and at least one releasable retainer located on the second end cap and associated with at the at least one locking protrusion for retaining the at least one locking protrusion in locking engagement with the filter support and being operative, when released, to allow rotatable unlocking of the fluid filter element.

Abstract: A freezing resistant liquid filter including a housing having a liquid inlet and a liquid outlet and a freezing compensating filter element disposed within the housing and including a folded filter medium having a plurality of interstices and freezing compressible elements located at the interstices.

Abstract: A freezing resistant liquid filter including a housing having a liquid inlet and a liquid outlet and a freezing compensating filter element disposed within the housing and including a folded filter medium having a plurality of interstices and freezing compressible elements located at the interstices.

Abstract: A freezing resistant liquid filter including a housing having a liquid inlet and a liquid outlet and a freezing compensating filter element disposed within the housing and including a folded filter medium having a plurality of interstices and freezing compressible elements located at the interstices.

Abstract: A freezing resistant liquid filter including a housing having a liquid inlet and a liquid outlet and a freezing compensating filter element disposed within the housing and including a folded filter medium having a plurality of interstices and freezing compressible elements located at the interstices.