Patent US4324475A successfully refreshed from Google Patents.
Patent US3716140A successfully refreshed from Google Patents.
US3716140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooking fat filter with fast start-up
Assignee: Keating of Chicago Inc
•
Filing: 1971-04-02
•
Granted: 1973-02-13
•
Expires: 1991-04-02
Abstract
Abstract A cooking fat filter constructed with the upper edge of the fat vessel low relative to the floor so that it may be used in conjunction with fat fryers having a gravity drain, said vessel having a shallow sump subtended therefrom, there being a suction tube opening in and adjacent the bottom of the sump, said suction tube being inclined downwardly to the sump from a pump inlet and said tube having a by-pass hole opening to the sump above the level of all melted fat back-drained to the sump from pump-fryer return conduit system following filter shut-down, said hole bypassing hot liquid fat from the vessel to the suction tube during start-up and quickly melting solidified drainage fat stopped up therein, thereby dispensing with the time-consuming need to clean or drain the fat flow system after filter shutdown.
Inventors
- 👤 R Keating
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:22
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/12; A47J37/1223; Y; Y10; Y10S; Y10S210/00; Y10S210/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
A fast start-up cooking fat filter for use with a gravitydrain fryer pot having a pump with an inlet and a discharge outlet comprising: a. a base for supporting a vessel having a bottom; b. a sump having a bottom subtending from the vessel bottom; c. a filter means overlying the sump; d. a suction conduit in fluid communication with the pump inlet and having an opening adjacent the Bottom of the sump; and e. a fluid by-pass means for providing fluid communication between the suction conduit and the vessel at a point below the inlet to the pump and above the said opening of the suction conduit in the sump at a level in the suction conduit above the level of all fat back-drained into said vessel from the said conduit and pump.
Claim 2
Dependent Claim
134 words
A fast start-up cooking fat filter for use with a gravitydrain fryer pot having a pump with an inlet and a discharge outlet comprising: a. a base for supporting a vessel having a bottom; b. a sump having a bottom subtending from the vessel bottom; c. a filter means overlying the sump; d. a suction conduit in fluid communication with the pump inlet and having an opening adjacent the Bottom of the sump; and e. a fluid by-pass means for providing fluid communication between the suction conduit and the vessel at a point below the inlet to the pump and above the said opening of the suction conduit in the sump at a level in the suction conduit above the level of all fat back-drained into said vessel from the said conduit and pump.
Claim 3
Dependent Claim
134 words
A fast start-up cooking fat filter for use with a gravity-drain fryer pot having a pump with an inlet and a discharge outlet comprising: a. a base for supporting a vessel having a bottom; b. a sump having a bottom subtending from the vessel bottom; c. a filter means overlying the sump; d. a suction conduit in fluid communication with the pump inlet and having an opening adjacent the Bottom of the sump; and e. a fluid by-pass means for providing fluid communication between the suction conduit and the vessel at a point below the inlet to the pump and above the said opening of the suction conduit in the sump at a level in the suction conduit above the level of all fat back-drained into said vessel from the said conduit and pump.
Claim 4
Dependent Claim
134 words
A fast start-up cooking fat filter for use with a gravity-drain fryer pot having a pump with an inlet and a discharge outlet comprising: a. a base for supporting a vessel having a bottom; b. a sump having a bottom subtending from the vessel bottom; c. a filter means overlying the sump; d. a suction conduit in fluid communication with the pump inlet and having an opening adjacent the Bottom of the sump; and e. a fluid by-pass means for providing fluid communication between the suction conduit and the vessel at a point below the inlet to the pump and above the said opening of the suction conduit in the sump at a level in the suction conduit above the level of all fat back-drained into said vessel from the said conduit and pump.
Claim 5
Dependent Claim
46 words
A cooking fat filter as in claim 1 wherein the suction conduit means comprises a suction tube downwardly inclined and extending into the sump and having a downwardly projecting bend therein providing for a depending portion having an end opening adjacent the bottom of said sump.
References Cited (Backward Citations)
US2287396A
Cited
US3337055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |