US 12,673,288 B2Granted

Adsorbent filter assembly

AssigneeDonaldson Company, Inc.

InventorsDaniel L. Tuma, Scott Keller

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Abstract

A filter assembly has a housing. The housing has an inner body and an outer body surrounding at least a portion of the inner body. The inner body has a base extending in a lateral direction and a first sidewall extending axially outward from the base. The inner body defines a cavity. The first sidewall defines a perimetric surface around the cavity. A first filter media extends across the perimetric surface and across the cavity. An adsorbent is disposed in the cavity. The outer body has a second sidewall laterally outward from and surrounding the first sidewall. The second sidewall spans at least 50% of the axial length of the first sidewall. The outer body has a first axial end and a second axial end and a retainer portion extending laterally inward from the first axial end. The retainer portion is positioned axially outward from the first filter media.

Claims18

Dependent claims

A filter assembly comprising:

a housing comprising an inner body and an outer body surrounding at least a portion of the inner body, the inner body having a base extending in a lateral direction and a first sidewall extending axially outward from the base by an axial length, wherein the inner body defines a cavity and the first sidewall defines a perimetric surface around the cavity;
a first filter media extending across the perimetric surface and across the cavity;
and
an adsorbent disposed in the cavity,
wherein the outer body comprises a second sidewall laterally outward from the first sidewall and surrounding the first sidewall, wherein the second sidewall spans at least 50% of the axial length of the first sidewall, wherein the outer body has a first axial end and a second axial end and the outer body further comprises a retainer portion extending laterally inward from the first axial end of the second sidewall and the retainer portion is positioned axially outward from the first filter media;
and wherein the retainer portion is an inner rim defining a central opening, wherein the inner rim extends laterally across at least a portion of the perimetric surface.

3 more elements

A method of forming a filter assembly comprising:

forming an inner body having a base that extends in a lateral direction and a first sidewall extending axially outward from the base by an axial length, wherein the base and the first sidewall define a cavity and the first sidewall has a perimetric surface around the cavity;
depositing an adsorbent in the cavity;
disposing a first filter media across the perimetric surface and the cavity;
and
disposing an outer body over the inner body, such that a second sidewall of the outer body is positioned laterally outward from the first sidewall and surrounds the first sidewall, wherein the second sidewall spans at least 50% of the axial length of the first sidewall, wherein the outer body has a first axial end and a second axial end and the outer body further comprises a retainer portion extending laterally inward from the first axial end of the second sidewall and the retainer portion is positioned axially outward from the first filter media;
and wherein the retainer portion is an inner rim defining a central opening, wherein the inner rim extends laterally across at least a portion of the perimetric surface.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/144,706Filed 8 May 2023 · us provisional application
Priority: 9 May 2022
Published: US 2023/0356128 A19 Nov 2023
Granted: 7 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

B01D 46/0036
With additional separating or treating functions: by adsorption or absorption
B01D 46/0001
Filters or filtering processes specially modified for separating dispersed particles from gases or vapours: making filtering elements
B01D 46/543
Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms: using membranes
B01D 53/0415
Constructional details of adsorbing systems: beds in cartridges