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US 6,187,188 B1Granted
Filter cartridge retention system
AssigneeStanadyne Automotive Corp.
InventorsLeon P. Janik, Michael J. Williams
Life of this patent
Estimating the term…
Abstract
A fuel filter cartridge has a plurality of retention tabs which radially integrally project along the roll seam structure which joins a top section of the housing to the cylindrical lower section. A base contains complementary slots which allow for the cartridge to be axially inserted and rotated to secure the replaceable cartridge in position. Various numbers and configurations of the retention tabs may be provided.
Claims20
A filter cartridge comprising:
- a filter;
- a housing for said filter, said housing comprising first and second sections and a central axis;
- said first section defining an axial opening and joined to said second section along a peripheral roll-type seam;
- and
- at least one portion of said housing and roll-type seam being outwardly radially offset relative to said central axis and remaining portion of the housing and roll seam to form a retention tab.
2 more elements
A filter assembly comprising:
- a cartridge having an axis and comprising a filter, a housing for said filter comprising a first section defining an axial opening and a second section connected to said first section along a peripheral roll seam, at least one retention tab partially defined by an arcuate extension of said roll seam and said housing, said retention tab projecting radially outwardly relative to said axis and remaining portions of the housing and roll seam;
- and
- a base comprising:
- a receptacle defining a receiving cavity for receiving an end portion of said cartridge;
- and
- an extension extending from said receptacle and having an inwardly disposed retention lip having a retention shoulder, said lip defining at least one axial slot which is complementary with said at least one retention tab and angularly alignable therewith,
- so that said cartridge is axially mountable into said receptacle and rotatable, wherein said at least one retention tab engages the retention shoulder of said base for securement therewith.
4 more elements
A filter cartridge comprising:
- a filter;
- a housing for said filter, said housing comprising a central axis and defining an axial opening;
- a circumferential peripheral shoulder extending radially from said housing relative to said central axis;
- and
- multiple angularly spaced portions of said housing and shoulder being radially outwardly offset relative to said central axis and remaining portions of the housing and shoulder to form multiple retention tabs having arcuate profiles coaxial with said central axis.
2 more elements
Dependencies are inferred from the claim text.