US4238995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toaster control
Assignee: Individual
•
Filing: 1978-05-30
•
Granted: 1980-12-16
•
Expires: 1998-05-30
Abstract
Abstract High intensity radiant energy is supplied to the surface of food items by a quartz iodide lamp. A temperature probe which senses both the ambient temperature in the toaster housing and the lamp radiance controls the on-time of the lamp to produce the desired surface temperature to accomplish the desired cooking.
Inventors
- 👤 Louis S. Polster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:09
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/0623; A47J37/0629; A47J37/0635
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
A toaster for the cooking of a food item, said toaster comprising: a housing; a support surface for supporting a food item to be cooked within said housing; an elongated quartz-iodide lamp in said housing spaced from and parallel to said support surface; and an elongated temperature-resistance transducer in the form of a probe positioned within said housing, said transducer being coextensive with and parallel to said lamp for sensing the heat energy from both the ambient temperature within said housing and the radiance of said lamp for producing a signal corresponding to said heat energy; and control means operatively connected to said lamp and to said transducer for turning off said lamp at a predetermined time when the heat energy of both the ambient temperature within said housing and also the radiance of said lamp have been sufficient to cook a food item supported on said support surface.
Claim 2
Dependent Claim
149 words
A toaster for the cooking of a food item, said toaster comprising: a housing; a support surface for supporting a food item to be cooked within said housing; an elongated quartz-iodide lamp in said housing spaced from and parallel to said support surface; and an elongated temperature-resistance transducer in the form of a probe positioned within said housing, said transducer being coextensive with and parallel to said lamp for sensing the heat energy from both the ambient temperature within said housing and the radiance of said lamp for producing a signal corresponding to said heat energy; and control means operatively connected to said lamp and to said transducer for turning off said lamp at a predetermined time when the heat energy of both the ambient temperature within said housing and also the radiance of said lamp have been sufficient to cook a food item supported on said support surface.
Claim 3
Dependent Claim
61 words
The toaster of claim 1 wherein there are two quartz-iodide lamps and said support surface includes a drawer adjacent the bottom of said housing, said drawer being at least partially withdrawable from said housing to receive a food item to be cooked and being repositionable within said housing to place a food item thereon within the radiance of said quartz-iodide lamps.
Claim 4
Dependent Claim
45 words
The toaster of claim 2 wherein a reflector is positioned above each of said lamps to direct the radiant energy from said lamps in a generally downward direction and at least one guard bar is positioned below the level of said lamps within said housing.
Claim 5
Dependent Claim
29 words
The toaster of claim 3 wherein said sensing probe is mounted above said guard bar to protect said probe against physical contact and is mounted on said guard bar.
Claim 6
Dependent Claim
30 words
The toaster of claim 4 wherein a drawer-operated switch is connected to said controller so that, when said drawer is partially withdrawn from said housing, said lamps are turned off.
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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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |