Filter element and filter assembly including locking mechanism
First Claim
Patent Images
1. A filter, comprising:
- a cover having a rim region and a hub region, the hub region having an inlet port and an outlet port, the cover including an imperforate annular disc portion, the imperforate annular disc portion extends radially between and connects the rim region to the hub region to prevent fluid flow axially through the disc portion between the hub region and the rim region;
a tubular ring of filter media for filtering fluid flow from the inlet port to the outlet port, the tubular ring of filter media extending axially between first and second ends and having an inner diameter and an outer diameter;
at least one key provided proximate the rim region;
at least one lock detent provided between the rim and the hub region, the at least one lock detent having at least a portion positioned radially between the inner and outer diameters of the tubular ring of filter media, the at least one lock detent extending axially outward from an outer surface of the imperforate annular disc portion of the cover in a direction extending away from the filter media; and
the rim region and the hub region extending axially outward away from the tubular ring of filter media further than the at least one lock detent.
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Abstract
A fluid filtering apparatus and method may include keyed components to ensure that a correct filter element is being installed into a filter base. Keyed arrangements may occur between a filter element and a filter housing, a filter and a filter base, and a filter base and a filter housing. A locking arrangement may be provided to prevent undesired loosening of a filter relative to a filter base. The filter base may include a torsion lock insert that engages lock detents of a filter to prevent the undesired loosening. An adaptor may be provided to provide the lock detents that interact with a torsion lock insert.
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Citations
25 Claims
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1. A filter, comprising:
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a cover having a rim region and a hub region, the hub region having an inlet port and an outlet port, the cover including an imperforate annular disc portion, the imperforate annular disc portion extends radially between and connects the rim region to the hub region to prevent fluid flow axially through the disc portion between the hub region and the rim region; a tubular ring of filter media for filtering fluid flow from the inlet port to the outlet port, the tubular ring of filter media extending axially between first and second ends and having an inner diameter and an outer diameter; at least one key provided proximate the rim region; at least one lock detent provided between the rim and the hub region, the at least one lock detent having at least a portion positioned radially between the inner and outer diameters of the tubular ring of filter media, the at least one lock detent extending axially outward from an outer surface of the imperforate annular disc portion of the cover in a direction extending away from the filter media; and the rim region and the hub region extending axially outward away from the tubular ring of filter media further than the at least one lock detent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A filter assembly, comprising:
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a filter cartridge comprising; a housing having a first outer annular sidewall; a cover at one end of the housing, the cover having an inlet port and an outlet port; filter media disposed within the first outer annular sidewall; a mounting thread; and a torsion lock detent radially between the mounting thread and the inlet and outlet ports; and a filter base comprising; a second annular sidewall including an open end sized to receive an end of the housing therethrough, the second annular sidewall including an inclined shelf corresponding to the mounting thread formed in a radially inner surface of the second annular sidewall for securing the filter cartridge to the filter base, the shelf facing axially away from the open end of the second annular sidewall, the second annular sidewall having an inner diameter being less than an outer diameter of the mounting thread; and a lock assembly including a ramped surface terminating in a lock slot, the ramped surface abutting the torsion lock detent when the mounting thread is inserted into the thread slot, the ramped surface being axially moveable relative to the second annular sidewall, the lock assembly including a biasing member axially biasing the ramped surface towards the torsion lock detent. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification