US4472277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease trap
Assignee: ETL PATENT Inc
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Filing: 1982-08-11
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Granted: 1984-09-18
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Expires: 2002-08-11
Abstract
Abstract The invention pertains to water and grease separators as used in a conventional plumbing system. A synthetic plastic receptacle is supported upon a framework usually located below, or adjacent to, a sink receiving liquid wastes to be separated. The framework supports a pair of coupling halves connected to the plumbing system, and inlet and outlet fittings mounted upon the receptacle align with and are connected to the frame supported couplings when the receptacle is mounted upon the frame. Baffling within the receptacle aids in the separation of water and grease, the fittings permit the receptacle to be quickly removed from the plumbing circuit, and a valved drain within the receptacle permits rapid disposal of its contents.
Inventors
- 👤 Christopher Bailey
- 👤 Ernest T. Lago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:26
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/14; E03F5/16; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D21/00; B01D21/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86212; Y10T137/86348
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
A grease trap utilized within a permanent plumbing system characterized by its portability and ease of maintenance comprising, in combination, a closed waste water receptacle having an inlet and an outlet adapted to confine water and grease, a support removably supporting said receptacle, carrying handles defined on said receptacle, first and second conduit connections mounted upon said support adapted to be connected to the permanent plumbing system, a quick connect and disconnect inlet fitting mounted within said receptacle inlet, a quick connect and disconnect outlet fitting mounted within said receptacle outlet, said inlet fitting being releasably connectable to said first conduit connection and said outlet fitting being releasably connectable to said second conduit connection upon said receptacle being placed upon said support, and drain means defined upon said receptacle.
Claim 2
Dependent Claim
129 words
A grease trap utilized within a permanent plumbing system characterized by its portability and ease of maintenance comprising, in combination, a closed waste water receptacle having an inlet and an outlet adapted to confine water and grease, a support removably supporting said receptacle, carrying handles defined on said receptacle, first and second conduit connections mounted upon said support adapted to be connected to the permanent plumbing system, a quick connect and disconnect inlet fitting mounted within said receptacle inlet, a quick connect and disconnect outlet fitting mounted within said receptacle outlet, said inlet fitting being releasably connectable to said first conduit connection and said outlet fitting being releasably connectable to said second conduit connection upon said receptacle being placed upon said support, and drain means defined upon said receptacle.
Claim 3
Dependent Claim
17 words
In a grease trap as in claim 1, said container being formed of a synthetic plastic material.
Claim 4
Dependent Claim
48 words
In a grease trap as in claim 1, said conduit connections each comprising a female coupling half, said fittings each comprising a male coupling half sealingly receivable within a female coupling half, and latch means mounted upon each female coupling half releasably maintaining the interconnection of coupling halves.
Claim 5
Dependent Claim
45 words
In a grease trap as in claim 1, said support comprising a metal frame including a horizontal base, said receptacle being mounted upon said base, a vertically extending pedestal defined upon said support extending above said base, said conduit connections being mounted upon said pedestal.
Claim 6
Dependent Claim
26 words
In a grease trap as in claim 1, baffle means within said receptacle adjacent said inlet and outlet baffling liquid flow through said inlet and outlet.
Claim 7
Dependent Claim
30 words
In a grease trap as in claim 1, said drain means comprising an opening defined within said receptacle and a valve within said opening movable between open and closed positions.
References Cited (Backward Citations)
US723618A
Cited
US1634871A
Cited
US2550497A
Cited
US2682356A
Cited
US2763335A
Cited
US2822927A
Cited
US3168905A
Cited
US4381996A
Cited
US4319762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |