US 5,547,480 AGranted

Cylindrical air filter with radially directed seal

AssigneeDonaldson Company, Inc.

InventorPaul R. Coulonvaux

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Abstract

An air filter has a tubular metal housing with an air inlet and a plastic end cap affixed to one end of the housing. The opposite end of the housing is enclosed by a removable cover. The plastic end cap has an integral cylindrical air outlet with a portion thereof extending into the tubular housing. A generally cylindrical air filter element includes an inner liner, an outer liner, filter media captured therebetween, a closed end and an open end. The open end of the filter element has an end cap formed of an elastomeric material with an opening defined by a generally cylindrical radially inward-facing surface. The diameter of the opening is smaller than the outside diameter of that portion of the outlet member of the end cap that extends into the housing. The filter element is mounted on that portion of the outlet member extending into the tubular housing and the elastomeric material provides a seal.

Claims4

Dependent claims

An air filter comprising:

a tubular metal housing having a particulate laden air inlet and first and second ends;
a plastic end cap with a substantially cylindrical air outlet member with a portion thereof extending into said tubular housing, said portion having an outside diameter;
means for affixing said plastic end cap to said tubular housing at said first end thereof comprising a plurality of indentations positioned about said first end of said tubular housing and projecting inwardly, said plastic end cap having a plurality of recesses formed therein angling radially inward and toward said first end and having means for receiving said indentations to affix said plastic end cap to said housing;
a substantially cylindrical filter element comprising a filter media and means for supporting said media, said filter element having a first end and a second end;
said filter element having a filter end cap on said first end thereof, said filter end cap formed of elastomeric material and having a substantially cylindrical radially inward-facing surface defining an opening into the interior of said filter element, said opening having a diameter smaller than the outside diameter of said portion of said outlet member extending into said tubular housing whereby said filter element is mounted on said portion of said outlet member to form a seal between said portion of said outlet member and said filter element;
and
means for closing said second end of said housing.

4 more elements

Dependencies are inferred from the claim text.