US 2015/0090651 A1Published application

Fuel Filter Cartridge and Method of Use Thereof

AssigneeStanadyne, Inc.

InventorsChandrakant Siddharam Kotale, Kenneth W. Dutil

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Abstract

A filter cartridge in accordance with the present disclosure has a longitudinal axis and comprises a housing, a filter element, and a collar. The housing has a generally cylindrical sidewall and defines an open first end, an axially opposite second end, and a flange projecting radially away from the axis at the first end. The filter element has a ring of filter media circumscribing the axis and extending between first and second end caps. The first end cap has a generally cylindrical wall extending axially between first and second peripheral rims. The wall defines first and second seal glands adjacent the first and second rims which receive first and second seal members, respectively. A ledge projects radially outwardly from the cylindrical wall. The collar has an annular sidewall having a shoulder projecting from an inner surface. The ledge and the shoulder radially overlap and retain the flange therebetween.

Claims25

Dependent claims

A filter cartridge having a longitudinal axis for use with a filter base, said cartridge comprising:

a housing having a generally cylindrical sidewall coaxial with the longitudinal axis and defining an open first end and an axially opposite second end, said sidewall having inner and outer surfaces, and a flange projecting radially away from said outer surface of said housing at said open first end;
a filter element having a ring of filter media circumscribing the longitudinal axis and extending axially between first and second end caps, said first end cap defining a fluid flow opening coaxial with the longitudinal axis, a generally cylindrical wall disposed at a circumferential periphery and extending axially between first and peripheral rims, said cylindrical wall defining first and second seal glands adjacent said first and second peripheral rims, respectively, said seal glands oriented radially away from the longitudinal axis and receiving first and second seal members, respectively, a ledge projects radially outwardly from said cylindrical wall intermediate said first and second peripheral rims;
a collar having an annular sidewall having first and second axial ends, a circumferential shoulder projecting from an inner surface of said sidewall intermediate said first and second axial end and configured such that said ledge and shoulder radially overlap and retain the flange therebetween said collar circumscribing said housing and engaged with said first end cap such that said flange is axially retained between said ledge and said shoulder.

A filter element having a longitudinal axis for use with a cartridge housing having a generally cylindrical sidewall having inner and outer surfaces and defining an open first end and an axially opposite second end, said filter element configured for use with a filter base, the filter element comprising:

a ring of filter media circumscribing the longitudinal axis and extending axially between filter media first and second ends;
a first end cap defining a fluid flow opening coaxial with said longitudinal axis, having first end cap first and second surfaces extending radially between a circumferential periphery and said fluid flow opening, an annular wall at said periphery and extending axially between first and second peripheral rims, said annular wall defining a first seal gland adjacent said first peripheral rim oriented radially away from the longitudinal axis and receiving a first seal member, said seal gland and seal member configured to create a seal with said base, said filter media first end secured to said first end cap second surface radially inwardly of said second annular wall;
an imperforate second end cap secured to said filter media second end.

A method of using a filter cartridge with a filter base comprising:

dismounting the filter cartridge from the filter base by uncoupling a connection between a collar surrounding an open first end of a filter cartridge housing and a skirt of the filter base thereby breaking a first seal between a first seal member retained in a first seal gland of a first end cap and oriented radially away from a longitudinal axis of the filter cartridge and an inner surface of the filter base skirt;
disengaging said first end cap and said collar thereby breaking a seal between a second seal member and an inner surface of a cylindrical sidewall of said housing;
axially withdrawing said element from said housing;
axially inserting a replacement element within said housing;
engaging a ledge projecting radially away from a generally cylindrical wall of a first end cap of said replacement element with a shoulder projecting radially inwardly from an inner surface of said collar and thereby trapping a flange projecting radially away from an outer surface of said cartridge housing adjacent said open first end between said ledge and said shoulder, and creating said second seal between said second seal member and said inner surface;
remounting said filer cartridge to said filter base by coupling said connection between said collar and said filter skirt, creating said first seal between said first seal member and said inner surface of said skirt.

3 more elements

Dependencies are inferred from the claim text.