US3851640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep fat fryer with controllable heat-up for cold fat melt
Assignee: Keating of Chicago Inc
•
Filing: 1973-04-27
•
Granted: 1974-12-03
•
Expires: 1993-04-27
Abstract
Abstract A deep fat fryer with two-stage fuel flow control for slowly melting newly packed or solidified fat without overheating and burning followed by thermostatically-controlled high heat of a liquid fat bath for frying.
Inventors
- 👤 R Keating
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:18
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/12; A47J37/1266
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
198 words
A two-stage gas supply system for deep-fat melter-fryer burners comprising: a. a gas source; b. a single gas line having its inlet end connected in fluid communication with an outlet from the source; c. a flow-control valve having a remote control input and having its inlet connected in fluid communication with the outlet from the gas line and its outlet in fluid communication with the inlet to the melter-fryer burners; d. a fat fryer control means having its input operationally connected to a power supply and its output operationally connected to the remote control input of the flow-control valve for controlling the supply of gas to the burners supplying heat to the melted fat for pUrposes of frying; e. a fat melter control means having its input operationally connected to the output of the fat fryer control means, and its output operationally connected to the remote control input of the flow-control valve for controlling the supply of gas to the burners supplying heat to melt the solid fat; and f. selection means operationally connected to both the fat fryer control means and the fat melter control means for mutually excluding the operation of each one from the other.
Claim 2
Dependent Claim
198 words
A two-stage gas supply system for deep-fat melter-fryer burners comprising: a. a gas source; b. a single gas line having its inlet end connected in fluid communication with an outlet from the source; c. a flow-control valve having a remote control input and having its inlet connected in fluid communication with the outlet from the gas line and its outlet in fluid communication with the inlet to the melter-fryer burners; d. a fat fryer control means having its input operationally connected to a power supply and its output operationally connected to the remote control input of the flow-control valve for controlling the supply of gas to the burners supplying heat to the melted fat for pUrposes of frying; e. a fat melter control means having its input operationally connected to the output of the fat fryer control means, and its output operationally connected to the remote control input of the flow-control valve for controlling the supply of gas to the burners supplying heat to melt the solid fat; and f. selection means operationally connected to both the fat fryer control means and the fat melter control means for mutually excluding the operation of each one from the other.
Claim 3
Dependent Claim
25 words
A two-stage gas supply system for a deep fat fryer-melter as set forth in claim 1 wherein the fat fryer control means comprises a thermostat.
Claim 4
Dependent Claim
46 words
A two-stage gas supply system for a deep fat fryer-melter as set forth in claim 1 wherein the fat melter control means comprises an ''''infinite timer'''' for supplying electrical signals to cyclically operate the flow-control valve a set closed period followed by a set open period.
Claim 5
Dependent Claim
65 words
A two-stage gas supply system for a deep fat fryer-melter as set forth in claim 1 wherein the mutually exclusive selection means comprises a double-pole, double-throw switch having its input operationally connected to the output of the fat fryer control means and each of its double-pole outlets operationally connected to each of the inputs of the fat melter control means and the flow-control valve, respectively.
Claim 6
Dependent Claim
30 words
A two-stage gas supply system for a deep fat melter-fryer as set forth in claim 1 wherein the flow-control valve having a remote control input comprises a solenoid-operated shutoff valve.
References Cited (Backward Citations)
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US2266563A
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US2329682A
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US2846147A
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |