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US 12,478,911 B2Granted
Filter assembly, filter bag and method of replacing a filter bag
AssigneeLeanfil Oy
InventorsSamu Pöri, Heikki Pöri, Tommi Lustig
Life of this patent
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AssigneeLeanfil Oy
InventorsSamu Pöri, Heikki Pöri, Tommi Lustig
Estimating the term…
The disclosure relates to a filter assembly (16) comprising a frame (6) comprising a frame part (6.1) having a top side (7a), a bottom side (7d), inner edges (7c) defining an aperture (26) and outer edges (7b) forming an outer perimeter of the frame part (6.1), and a bag-like insert (11) comprising filter material and having an open upper portion (14) and at least one closed bottom portion. The insert (11) is fitted into the aperture (26) of the frame (6) with the open upper portion (14) bent over the frame part (6.1) to cover the top side (7a), the outer edges (7b) and at least part of the bottom side (7d) of the frame part (6.1). The upper portion (14) of the insert (11), which is bent over the frame (6), comprises a stretch region (27) made of stretchable material. The insert (11) is fastened to the frame (6) by a pressing force generated by the stretch region (27) against the frame (6).
A filter assembly, comprising:
The filter assembly according to any of the preceding claims, wherein the length of the stretch portion in a resting state is 20% or more than 20% shorter than the edge of the filter material defining the opening of the insert.
A method, comprising:
Dependencies are inferred from the claim text.