US4806240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adapter and cartridge assembly
Assignee: 3M Purification Inc
•
Filing: 1987-06-12
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Granted: 1989-02-21
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Expires: 2007-06-12
Abstract
Abstract The present invention sets forth an adapter for filter cartridges and a mating cartridge which provides sealing means between the cartridge and the adapter and sealing means between the adapter and a filter head to which it is to be installed, and means for installing the adapter on a cartridge and for installing the adapter in the filter head with an aligning and locking means that ensures that all parts are appropriately positioned for proper function and at the same time will prevent physical disengagement and/or a break in the flow path from the cartridge to the filter head when the cartridge and adapter are properly installed in the filter head.
Inventors
- 👤 Edward C. Giordano
- 👤 Raymond M. Petrucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:27
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D27/00; B01D27/08; B01D35/30; B01D35/306; B01D2201/00; B01D2201/40; B01D2201/4015; Y; Y10; Y10S; Y10S206/00; Y10S206/831
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
An adapter for connecting a filter cartridge to a filter head comprising: an outer shell; an inner core having a cylindrical section thereon; receptacle means in said adapter to receive said filter cartridge; lug means on said adapter to attach said adapter to a filter head; aligning means disposed on said cylindrical section of said inner core axially movable on said cylindrical section, said aligning means coacting with said outer shell to radially align said inner core with respect to said outer shell to maintain said filter cartridge in the receptacle means; and axially slidable means to lock the cartridge in the adapter, said locking means constructed and arranged to coact with the filter head to maintain the cartridge in the adapter.
Claim 2
Dependent Claim
122 words
An adapter for connecting a filter cartridge to a filter head comprising: an outer shell; an inner core having a cylindrical section thereon; receptacle means in said adapter to receive said filter cartridge; lug means on said adapter to attach said adapter to a filter head; aligning means disposed on said cylindrical section of said inner core axially movable on said cylindrical section, said aligning means coacting with said outer shell to radially align said inner core with respect to said outer shell to maintain said filter cartridge in the receptacle means; and axially slidable means to lock the cartridge in the adapter, said locking means constructed and arranged to coact with the filter head to maintain the cartridge in the adapter.
Claim 3
Dependent Claim
24 words
The adapter of claim 1, further comprising flow path means in said adapter defined by coaction of said inner core with said outer shell.
Claim 4
Dependent Claim
28 words
The adapter of claim 1, wherein said inner core includes receptacle means which coact with receptacle means in said outer shell to receive and secure said filter cartridge.
Claim 5
Dependent Claim
34 words
The adapter of claim 3, further comprising sealing means between said inner core and said outer shell to seal said flow path means defined by coaction between said inner core and said outer shell.
Claim 6
Dependent Claim
26 words
The adapter of claim 1, wherein said aligning means further comprise means to lock the position of said inner core with respect to said outer shell.
Claim 7
Dependent Claim
40 words
The adapter of claim 5, wherein said receptacle means include receptacle means on said inner core adapted to coact with said receptacle means in said outer shell when said inner core is operatively positioned with respect to said outer shell.
Claim 8
Dependent Claim
36 words
The adapter of claim 6, wherein said receptacle means are constructed and arranged to receive a relatively narrow necked filter cartridge having eccentrically disposed mounting toes adapted to coact with the receptacle means of said adapter.
Claim 9
Dependent Claim
15 words
The adapter of claim 5, wherein said means to lock is a free floating means.
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |