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US 6,554,140 B2Granted
Spin-on filter assembly
AssigneeFleetguard, Inc.
InventorsThomas H. Steger, Jr., A. Caner Demirdogen, Paul D. Miller, Bruce Bounnakhom, Samuel T. Masters
Life of this patent
Estimating the term…
Abstract
A fluid filter has a filter element for filtering fluid. A nutplate having a threaded mounting portion is adapted to threadedly engage an externally threaded filter head. An inner seal retainer is positioned between the nutplate and the filtering element in order to define a hollow interior. The inner seal retainer has at least one stiff hollow web extending in a radial direction adapted to provide a space for transmitting fluid between the nutplate and the filter element. An inner radial seal is attached to the inner seal retainer for sealing the filter element with the filter head.
Claims23
An apparatus, comprising:
- an externally threaded filter head;
- a fluid filter including
- an outer shell having an open end,
- a filter element having an end plate attached thereto, said filter element being disposed in said outer shell,
- a nutplate attached to the open end of said outer shell, said nutplate having a
- threaded mounting portion adapted to threadedly engage said threaded filter head,
- an inner radial seal for sealing said filter element with said filter head,
- a rigid inner seal retainer positioned between said nutplate and the end plate of said filter element for coupling said inner seal to the end plate of said filter element, said inner seal retainer being separable from said nutplate, said inner seal retainer defining at least one rigid standoff constructed and arranged to define a passageway for transmitting fluid between said nutplate and said filter element, and
- wherein said at least one rigid standoff is formed from a rigid material whereas said inner seal is formed from a resilient material different from said rigid material;
- and
- wherein said filter head has a seal retainer engaging surface contacting said inner seal to space said nutplate from said inner seal retainer.
8 more elements
A fluid filter, comprising:
- an outer shell having an open end;
- a filter element having an endplate attached thereto said filter element being disposed in said outer shell;
- a nutplate attached to the open end of said outer shell, said nutplate having a threaded mounting portion adapted to threadedly engage an externally threaded filter head;
- an inner radial seal for sealing said filter element to said filter head;
- a rigid inner seal retainer for coupling said inner radial seal to the end plate of said filter element, said seal retainer being positioned between said nutplate and the end plate of said filter element, said inner seal retainer and said nutplate being separate components, said inner seal retainer defining at least one rigid hollow web constructed and arranged to define a passageway for transmitting fluid between said nutplate and said filter element;
- and
- wherein said at least one rigid hollow web is formed from a rigid material whereas said inner seal is formed from a resilient material different from said rigid material.
4 more elements
A fluid filter assembly, comprising:
- an outer shell having an open end;
- a filter element having an end Plate attached thereto, said filter element being disposed in said outer shell;
- a nutplate attached to the open end of said outer shell, said nutplate having a threaded mounting portion adapted to threadedly engage a threaded filter head;
- an inner radial seal for sealing said filter element to said filter head;
- a rigid inner seal retainer for coupling said inner radial seal to the end plate of said filter element, said seal retainer being positioned between said nutplate and the end plate of said filter element, said inner seal retainer being separable from said nutplate, said inner seal retainer defining at least one rigid standoff constructed and arranged to define a passageway for transmitting fluid between said nutplate and said filter element, wherein said at least one rigid standoff has an alignment tab extending therefrom and toward an inner surface of said outer shell to align said filter element over said nutplate;
- an inner radial seal coupled to said inner seal retainer for sealing said filter element with said filter head;
- said rigid standoff has a nutplate engaging wall at which said rigid standoff engages said nutplate;
- and
- said alignment tab extends from said rigid standoff at an oblique angle with respect to said nutplate engaging wall and toward said nutplate to align said filter element over said nutplate.
6 more elements
An apparatus, comprising:
- an externally threaded filter head;
- and
- a fluid-filter including
- an outer shell having an open end;
- a filter element disposed in said outer shell,
- a nutplate attached to the open end of said outer shell, said nutplate having a threaded mounting portion adapted to threadedly engage said threaded filter head,
- an endplate attached to an end of said filter element proximal said nutplate,
- an rigid inner seal retainer positioned between said nutplate and said filter element, said inner seal retainer defining at least one rigid hollow web constructed and arranged to define a passageway for transmitting fluid between said nutplate and said filter element, said inner seal retainer being separable from said nutplate, and
- an inner radial seal positioned in an expansion space defined between said endplate and said inner seal retainer for sealing said filter element with said filter head, wherein said at least one rigid hollow web is formed from a rigid material whereas said inner seal is formed from a resilient material different from said rigid material.
6 more elements
Dependencies are inferred from the claim text.