US3931015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter vessel and filter element assembly
Assignee: CB Kaupp and Sons Inc
•
Filing: 1974-12-04
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Granted: 1976-01-06
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Expires: 1994-12-04
Abstract
Abstract A casing preferably formed of sheet metal deep drawn and seamless has an outlet at its bottom and an inlet in its cylindrical side wall below its open top a portion of which is circumferentially indented providing an inwardly projecting shoulder below said inlet, and a cover is removably clamped on said open top of the casing and has an extension engaging and holding a circumferential projection on a filter element in liquid-tight contact with said shoulder. The extension has perforations providing for passing of liquid from said inlet into said filter element, and may have an imperforate portion to extend into the liquid in said casing below said circumferential shoulder when the cover is closed during filtering operations so the liquid level will drop below the upper end of the filter element when the cover is removed and thus prevent spilling of the liquid.
Inventors
- 👤 Bernard M. Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:54
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D29/88; B01D29/90; B01D29/902
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A filter comprising a casing having a vertical cylindrical side wall, an open top, a side inlet extending through said side wall below said open top, and a bottom outlet, said cylindrical wall having a circumferentially indented portion providing an inner circumferential shoulder below said inlet and above said outlet, a filter element open at its top and having a circumferential outward projection separably seated on said shoulder below said inlet, a cover including a top wall and closing said top of said cylindrical side wall and having an extension to extend into said casing to a point below said inlet and engage said outward projection of the filter element and press said projection against said shoulder when the cover is closed, said extension having perforations located above said shoulder when the cover is closed and providing for flow of liquid from said inlet through the open top of said filter element, and means for releasably holding said cover in closed position.
Claim 2
Dependent Claim
162 words
A filter comprising a casing having a vertical cylindrical side wall, an open top, a side inlet extending through said side wall below said open top, and a bottom outlet, said cylindrical wall having a circumferentially indented portion providing an inner circumferential shoulder below said inlet and above said outlet, a filter element open at its top and having a circumferential outward projection separably seated on said shoulder below said inlet, a cover including a top wall and closing said top of said cylindrical side wall and having an extension to extend into said casing to a point below said inlet and engage said outward projection of the filter element and press said projection against said shoulder when the cover is closed, said extension having perforations located above said shoulder when the cover is closed and providing for flow of liquid from said inlet through the open top of said filter element, and means for releasably holding said cover in closed position.
Claim 3
Dependent Claim
60 words
The filter as defined in claim 1 wherein said extension has a cylindrical wall coaxial with said top wall of the cover and provided with an outwardly projecting circumferential flange to engage said outward projection of said filter element and press said projection against said shoulder when the cover is closed, and said perforations are formed in said circumferential flange.
Claim 4
Dependent Claim
35 words
The filter as defined in claim 2 wherein said extension has a portion below said circumferential flange to extend into the liquid in the casing below said inner circumferential shoulder when the cover is closed.
References Cited (Backward Citations)
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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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |