US3733027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric fuel control for gas griddle
Assignee: Individual
•
Filing: 1972-03-31
•
Granted: 1973-05-15
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Expires: 1992-03-31
Abstract
Abstract This specification discloses a griddle comprising a thick griddle plate, a plurality of burners positioned below the plate, a gas header line connected to each of the burners by a branch line in which is included a solenoid operated valve, and a thermostat control switch operatively associated with each solenoid valve with the operation of the switch being controlled by a mercury filled capillary tube, the free end of which is inserted in the griddle plate in close proximity to the upper surface thereof with the lower portion of the tube being insulated from the griddle plate. A pilot is associated with each burner and is connected to the input side of the solenoid valve for that burner.
Inventors
- 👤 C Napier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:22
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; A; A47; A47J; A47J37/00; A47J37/06; A47J37/067; A47J37/0682
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
In a gas griddle intended for the cooking of foods and particularly frozen hamburger patties: a. a metallic griddle plate of a thickness in the order of two inches and having a top cooking surface, a bottom surface and a rear surface; b. a plurality of gas burners arranged in spaced relation below said bottom surface; c. a supply of gas in the form of a header; d. a plurality of branch lines extending from said header to said burners, there being a branch line for each of said burners; e. a solenoid operated valve in each of said branch lines including a coil, and controlling the flow of gas therethrough; f. a thermostatic switch associated with each of said solenoid operated valves and including a switch controlling the current through said coil, and g. a mercury filled capillary tube for each thermostatic switch and having a free end portion inserted in said griddle plate in close proximity to the top surface thereof above a burner.
Claim 2
Dependent Claim
166 words
In a gas griddle intended for the cooking of foods and particularly frozen hamburger patties: a. a metallic griddle plate of a thickness in the order of two inches and having a top cooking surface, a bottom surface and a rear surface; b. a plurality of gas burners arranged in spaced relation below said bottom surface; c. a supply of gas in the form of a header; d. a plurality of branch lines extending from said header to said burners, there being a branch line for each of said burners; e. a solenoid operated valve in each of said branch lines including a coil, and controlling the flow of gas therethrough; f. a thermostatic switch associated with each of said solenoid operated valves and including a switch controlling the current through said coil, and g. a mercury filled capillary tube for each thermostatic switch and having a free end portion inserted in said griddle plate in close proximity to the top surface thereof above a burner.
Claim 3
Dependent Claim
36 words
The gAs griddle of claim 1 in which each of said capillary tubes passes below the bottom surface of said plate and up the rear surface to the point where it is inserted in said plate.
Claim 4
Dependent Claim
89 words
The gas griddle of claim 1 in which a passage having a cross-section greater than that of a capillary tube is formed in said plate and extends from the rear face thereof onto which it opens to a point spaced from the front end of the plate and centrally of a burner, together with insulation between the bottom portion of said passage and that portion of the capillary tube which is received therein with the capillary tube in contact with the plate at the upper portion of said passage.
Claim 5
Dependent Claim
26 words
The gas griddle of claim 3 together with insulation completely covering each capillary tube from the point where it enters the plate to the thermostatic switch.
Claim 6
Dependent Claim
34 words
The gas griddle of claim 4 in which each passage in the griddle terminates in a counterbore at the rear surface and the insulation completely covering a capillary tube is received in said counterbore.
Claim 7
Dependent Claim
18 words
The gas griddle of claim 1 together with a channel-like heat insulating shield receiving said solenoid operated valve.
Claim 8
Dependent Claim
36 words
The gas griddle of claim 1 in which each solenoid operated valve has an input side together with a pilot associated with a burner, and which is connected to the input side of the solenoid valve.
Claim 9
Dependent Claim
31 words
The gas griddle of claim 1 together with an indicating light included in the circuit of the coil of the solenoid of each valve to indicate when said solenoid is energized.
Claim 10
Dependent Claim
33 words
The gas griddle of claim 1 in which each burner includes an open end venturi tube and the branch line for that burner extends into said venturi tube in spaced relation relative thereto.
References Cited (Backward Citations)
US2762360A
Cited
US3463139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |