US5045192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter assembly with lockable lug means
Assignee: Purolator Facet Inc
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Filing: 1989-09-08
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Granted: 1991-09-03
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Expires: 2009-09-08
Abstract
Abstract A filter assembly including a base for supporting and providing fluid connection to a removable filter cartridge, the base having a hollow connecting end for mating with the cartridge, a removable filter cartridge comprising a filter medium and having a connecting end shaped to mate coaxially with the end of the base in a rotatable, telescopic relationship, the connecting end of one of the base and the cartridge having lug means extending radially toward the end of the other, the other connecting end having corresponding passage means for lockably receiving the lug means, the telescopically related mating ends of the base and cartridge providing radially opposed surfaces of circular cross-section about the mutual axis of the connecting ends of the base and cartridge, and a circular elastomeric sealing ring providing a radial seal between the circular cross-section surfaces, preventing liquid flow past it between the telescopic ends. Also disclosed are a spring locking mechanism to bias the lug means into locked position, and a filter cartridge having its filter medium both mechanically and adhesively secured to its connecting end member.
Inventors
- 👤 Ralph D. Terhune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:29
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/96; B01D2201/00; B01D2201/04; B01D2201/0415; B01D2201/40; B01D2201/4015; B01D2201/4084; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
132 words
A filter cartridge assembly comprising a connecting end member having a fluid flow passage therethrough and an annular channel surrounding said passage, said connecting end member having portions for making connection of said filter cartridge assembly to a filter mounting structure, a filter medium support including a circular cross-section end received in said channel, said filter medium support being generally cylindrical in configuration, said connecting end member and said support defining a means for mechanically locking said support to said connecting end member, a filter medium supported by said support and having a circular cross-section end received in said channel, and adhesive in said annular channel permanently securing said end member, said filter medium support and said filter medium to each other and sealably securing said filter medium to said end member.
Claim 2
Dependent Claim
132 words
A filter cartridge assembly comprising a connecting end member having a fluid flow passage therethrough and an annular channel surrounding said passage, said connecting end member having portions for making connection of said filter cartridge assembly to a filter mounting structure, a filter medium support including a circular cross-section end received in said channel, said filter medium support being generally cylindrical in configuration, said connecting end member and said support defining a means for mechanically locking said support to said connecting end member, a filter medium supported by said support and having a circular cross-section end received in said channel, and adhesive in said annular channel permanently securing said end member, said filter medium support and said filter medium to each other and sealably securing said filter medium to said end member.
Claim 3
Dependent Claim
37 words
The filter cartridge assembly of claim 1 wherein said connecting end member has an outwardly-directed circular cross-section surface and lug means that extend radially from said surface for lockably engaging passage means in a mating base member.
Claim 4
Dependent Claim
20 words
The filter cartridge assembly of claim 2 further comprising a circular elastomeric sealing ring mounted around said circular cross-section surface.
Claim 5
Dependent Claim
37 words
The filter cartridge assembly of claim 3 further comprising a base for mating with said connecting end member, said base having an inwardly directed circular cross-section surface and a passage means for lockably receiving said lug means.
Claim 6
Dependent Claim
148 words
The filter cartridge assembly of claim 4 wherein said passage means extends in a first circumferential direction along a first circumferential path at a first axial position to an angular position and in an axial direction from said first circumferential path at said angular position to a locked position at a second axial position that is different from said first axial position, there being a stop member at a position along a second circumferential path at said second axial position such that said lug means is prevented from circumferential movement along said second circumferential path in a second circumferential direction opposite to said first circumferential direction, and further comprising a locking mechanism biasing said lug means relative to said passage means in said axial direction into said locked position, said biasing being in the direction to cause said connecting end member to be biased away from said base.
Claim 7
Dependent Claim
14 words
The filter cartridge assembly of claim 5 wherein said locking mechanism is a spring.
Claim 8
Dependent Claim
29 words
The filter assembly of claim 6 wherein said spring is a wave spring that completely surrounds a flow passage through said base and has portions at different axial positions.
Claim 9
Dependent Claim
42 words
The filter cartridge assembly of claim 5 wherein said base includes struts transversing a fluid passage of said base, said struts joining at a central hub having a hole therethrough for receiving a member for connecting said base to a vessel wall.
Claim 10
Dependent Claim
29 words
The filter cartridge assembly of claim 5 wherein said connecting end member has an annular groove in said outwardly directed surface, and said ring is mounted in said groove.
Claim 11
Dependent Claim
26 words
The filter cartridge assembly of claim 5 further comprising a handle connected to said filter medium support permitting rotation and connection or removal of said cartridge.
Claim 12
Dependent Claim
39 words
The filter cartridge assembly of claim 5 further comprising a handled connected to said filter medium support permitting rotation and connection or removal of said cartridge, and said handle is rotatable between an upright position and a horizontal position.
Claim 13
Dependent Claim
58 words
The assembly of claim 1 wherein said locking means comprises a locking head on one of said connecting end member and said filter medium support, said locking head snapping into a recess on the other of said connecting end member and said filter medium support as the connecting end member and the filter medium support are brought together.
Claim 14
Dependent Claim
36 words
The assembly of claim 12 wherein said connecting end member and said filter medium support each have a locking head and a recess that mate with a recess and a locking head, respectively, on the other.
Claim 15
Dependent Claim
15 words
The assembly of claim 13 wherein there are narrow connecting portions adjacent to said recesses.
Claim 16
Dependent Claim
30 words
The assembly of claim 14 wherein there are first inclined surfaces on said locking heads to cause said heads to slide on each other as they are snapped in place.
Claim 17
Dependent Claim
69 words
The assembly of claim 15 wherein each said locking head has a second inclined surface that faces the second inclined surface of the mating locking head, said second inclined surface being inclined in the same direction as said first inclined surface so as to cause said locking heads to lock even tighter in response to forces tending to pull said filter medium support and said connecting end member apart.
Claim 18
Dependent Claim
14 words
The assembly of claim 13 wherein one said locking head is a continuous ring.
Claim 19
Dependent Claim
21 words
The filter assembly of claim 1 wherein said locking means comprises wedge means for wedging said support against said connecting member.
Claim 20
Dependent Claim
60 words
The filter assembly of claim 18 wherein said wedge means comprise projections extending axially from said connecting end member at said annular channel, said projections including necks and headed ends of larger width, and slot means provided by said support to receive said projections, said slots including portions wider than said headed ends and portions narrower than said headed ends.
Claim 21
Dependent Claim
24 words
The filter assembly of claim 19 wherein said support includes a circular ring plate having a flow passage therethrough and providing said slot means.
Claim 22
Dependent Claim
18 words
The filter assembly of claim 20 wherein said connecting member and said support are constructed from structural plastic.
Claim 23
Dependent Claim
39 words
The filter assembly of claim 20 wherein said filter medium comprises a pleated filter inside of said support and individual layers outside of said support, the ends of said pleated filter and layers being located in said annular channel.
Claim 24
Dependent Claim
18 words
The filter assembly of claim 20 wherein said connecting member has a diameter between 5 and 6 inches.
Claim 25
Dependent Claim
28 words
The filter assembly of claim 20 wherein said wedge means further comprises radial ribs in said channel, said circular ring plate being supported on top of said ribs.
Claim 26
Dependent Claim
23 words
The assembly of claim 19 wherein said cartridge is made of nonmetals, can be incinerated, and includes structural plastic and static dissipative material.
Claim 27
Dependent Claim
28 words
The filter assembly of claim 1 further comprising a sealing member having an annular channel receiving the other end of said filter medium and adhesive in said channel.
Claim 28
Dependent Claim
45 words
The filter assembly of claim 26 wherein said sealing member has a flow passage therethrough and a second annular channel on the opposite side, and further comprising a second filter medium with an end in said second annular channel and adhesive in said annular channel.
Claim 29
Dependent Claim
34 words
The filter assembly of claim 27 wherein said connecting member has diameter of between 5 to 6 inches, and said filter medium includes material causing coalescing of water in fuel passing through said medium.
Claim 30
Dependent Claim
21 words
The assembly of claim 1 wherein said cartridge is completely made of material that can be incinerated, and includes structural plastic.
Claim 31
Independent Claim
186 words
A method of making a filter cartridge assembly comprising providing a connecting end member, a filter medium support, means for mechanically locking said support to said end member, and a filter medium, said connecting end member having a fluid flow passage therethrough and an annular channel surrounding said passage, said connecting end member having portions for making connection of said filter cartridge assembly to a filter mounting structure, said filter medium support including a circular cross-section end sized to be received in said channel, said filter medium support being generally cylindrical in configuration, said filter medium being supported by said support and having a circular cross-section end sized to be received in said channel, said connecting end member and said support defining said means for mechanically locking, applying adhesive in said annular channel, mechanically connecting said filter medium support to said connecting end member by connecting said means for mechanically locking, and allowing said adhesive to set so as to permanently secure said end member, said filter medium support and said filter medium to each other and sealably secure said filter medium to said end member.
Claim 32
Independent Claim
186 words
A method of making a filter cartridge assembly comprising providing a connecting end member, a filter medium support, means for mechanically locking said support to said end member, and a filter medium, said connecting end member having a fluid flow passage therethrough and an annular channel surrounding said passage, said connecting end member having portions for making connection of said filter cartridge assembly to a filter mounting structure, said filter medium support including a circular cross-section end sized to be received in said channel, said filter medium support being generally cylindrical in configuration, said filter medium being supported by said support and having a circular cross-section end sized to be received in said channel, said connecting end member and said support defining said means for mechanically locking, applying adhesive in said annular channel, mechanically connecting said filter medium support to said connecting end member by connecting said means for mechanically locking, and allowing said adhesive to set so as to permanently secure said end member, said filter medium support and said filter medium to each other and sealably secure said filter medium to said end member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |