FILTER FRAME AND FILTER CARTRIDGE
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United States of America Patent
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Issued Date -
Jul 30, 2020
app pub date -
Apr 13, 2020
filing date -
Jan 24, 2018
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Abstract
A filter cartridge comprises a filter core, a filter frame, glue, and at least one sealing unit. The filter frame is mounted around an axial end of the filter core and has a frame body, an abutting segment, and a gluing segment. The abutting segment axially protrudes from and annularly extends along an edge of one of two axial end openings. The gluing segment axially protrudes from and annularly extends around the abutting segment, and surrounds the filter core. The glue is coated on and is wrapped around the gluing segment, extends into a position between the gluing segment and the filter core, and attaches to an inner gluing surface of the gluing segment, an outer gluing surface of the gluing segment, and an outer surface of the filter core. Therefore, the adhering area between the glue and the filter frame is effectively increased.
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