Patent ID: 8950588
Filing Date: 2015-02-10
Classification: F01L,F16K

Abstract:
1. A band type filter, comprising: a frame element that is formed into a belt shape and that comprises a resin, an opening being provided inside the frame element; a pair of link portions that are formed on the frame element at both distal ends in a longitudinal direction of the frame element and that are formed to be engagable with each other; and a filtering member that is provided in the opening in the frame element, wherein the frame element is formed to comprise a flat plate shape or a curved shape that has a center angle, as measured along a length of the frame element, equal to or less than 180 degrees in a free state where the pair of link portions are not engaged, wherein a plurality of grooves are formed on at least one of an inner surface and an outer surface of a pair of support frames of the frame element, in a latitudinal direction of the frame element, at intervals along the longitudinal direction, such that at least one groove of the plurality of grooves is disposed so as to overlap the opening when viewed in a direction perpendicular to the longitudinal direction, and wherein the frame element includes said pair of support frames that are formed on both sides of the filtering member along the longitudinal direction, the opening being located between the pair of support frames.