Patent US4048473A successfully refreshed from Google Patents.
US4048473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food cooking machine
Assignee: Individual
•
Filing: 1975-04-17
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Granted: 1977-09-13
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Expires: 1995-04-17
Abstract
Abstract A food cooking machine comprises a generally cylindrical vessel having liquid impervious walls, a closed end and an open end. A removable cap having a central axial vent opening closes the open end. The vessel is detachably supported on a base having a drive means engageable with the vessel for rotating the vessel about an axis substantially aligned with the vent opening and oriented between horizontal and an acute angle to horizontal and with the capped end of the vessel at least as elevated as the other end thereof. External heating means are provided for applying heat to the vessel contents through the vessel walls during rotation. The temperature in the vessel is selectively regulated by means of a temperature controller having a temperature sensing probe supported on the base in alignment with the vent opening in such manner that the opening is not blocked nor vessel rotation impeded. The probe senses the temperature of gases escaping through the vent opening and may be external to the vent opening or have an end projecting into the vessel through the opening. In one embodiment the drive train is coupled to the vessel cap for rotating the vessel.
Inventors
- 👤 William H. Burkhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:01
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/04; A47J37/047; A47J27/00; A47J27/004
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
274 words
A general purpose food cooking machine comprising a food-receiving vessel closed at one end, open at the opposite end, and having liquid-impervious walls, said vessel having a removable cap for closing said open end, and said cap being liquid-impervious except for a central vent opening therethrough through which gases may escape from the interior of the vessel, a base having means for detachably receiving and supporting said vessel for rotation about an axis of rotation substantially aligned with said vent opening and oriented between horizontal and an acute angle to horizontal, and with the capped end of said vessel at least as elevated as the first-mentioned vessel end, said base having a drive train thereon engageable with said vessel for rotating said vessel about said axis of rotation when the vessel is supported on said base, heater means supported adjacent to and exterior to said vessel and operatively associated therewith for applying heat to contents of said vessel through the walls thereof when said vessel is supported for rotation on said base, and temperature controller means operatively connected to said heater means for controlling said heater means to vary the temperature in said vessel, said temperature controller means having and being responsive to a temperature sensor, said sensor having means for supporting the same on said base substantially in alignment with said vent opening in such a manner that said vent opening is not blocked and rotation of the vessel is not impeded, said sensor being so positioned relative to said vent opening as to sense the temperature of gases which escape from said vessel through said vent opening while said vessel is rotated.
Claim 2
Dependent Claim
274 words
A general purpose food cooking machine comprising a food-receiving vessel closed at one end, open at the opposite end, and having liquid-impervious walls, said vessel having a removable cap for closing said open end, and said cap being liquid-impervious except for a central vent opening therethrough through which gases may escape from the interior of the vessel, a base having means for detachably receiving and supporting said vessel for rotation about an axis of rotation substantially aligned with said vent opening and oriented between horizontal and an acute angle to horizontal, and with the capped end of said vessel at least as elevated as the first-mentioned vessel end, said base having a drive train thereon engageable with said vessel for rotating said vessel about said axis of rotation when the vessel is supported on said base, heater means supported adjacent to and exterior to said vessel and operatively associated therewith for applying heat to contents of said vessel through the walls thereof when said vessel is supported for rotation on said base, and temperature controller means operatively connected to said heater means for controlling said heater means to vary the temperature in said vessel, said temperature controller means having and being responsive to a temperature sensor, said sensor having means for supporting the same on said base substantially in alignment with said vent opening in such a manner that said vent opening is not blocked and rotation of the vessel is not impeded, said sensor being so positioned relative to said vent opening as to sense the temperature of gases which escape from said vessel through said vent opening while said vessel is rotated.
Claim 3
Dependent Claim
33 words
A machine in accordance with claim 1, wherein said axis forms an acute angle with respect to horizontal and the capped end of said vessel is elevated relative to the first-mentioned vessel end.
Claim 4
Dependent Claim
28 words
A machine in accordance with claim 2, further comprising means associated with at least one of said vessel and base for adjusting said angle with respect to horizontal.
Claim 5
Dependent Claim
42 words
A machine in accordance with claim 1, wherein said temperature sensor is a probe so sized as to extend through said vent opening into the interior of said vessel without blocking the escape of gases from said vessel through said vent opening.
Claim 6
Dependent Claim
45 words
A machine in accordance with claim 1, wherein said temperature sensor is a probe having one end extending into said vessel via said vent opening without blocking the escape of gases from said vessel through said opening and the opposite end outside of said vessel.
Claim 7
Dependent Claim
35 words
A machine in accordance with claim 1, wherein said temperature sensor is located externally of said vessel adjacent to said vent opening in a position for sensing the temperature of gases vented through said opening.
Claim 8
Dependent Claim
81 words
A machine in accordance with claim 1, wherein said sensor is of such size as to be capable of insertion into the interior of said vessel through said vent opening without blocking the escape of gases through the vent opening from the interior of the vessel and wherein said means for supporting said temperature sensor has adjustable parts for positioning said temperature sensor exterior of said vessel adjacent to said vent opening or interior of said vessel through said vent opening.
Claim 9
Dependent Claim
17 words
A machine in accordance with claim 1, wherein said heater means comprises a radiant electric resistance heater.
Claim 10
Dependent Claim
14 words
A machine in accordance with claim 1, wherein said vessel is constructed of glass.
Claim 11
Dependent Claim
32 words
A machine in accordance with claim 1, wherein said vessel has removable means therein for causing circulation of solid food and liquid in the vessel as the vessel rotates about said axis.
Claim 12
Dependent Claim
19 words
A machine in accordance with claim 1, wherein said cap rotates with said vessel relative to said temperature sensor.
Claim 13
Dependent Claim
75 words
A machine in accordance with claim 1, wherein said temperature sensor comprises a probe of such size as to be capable of insertion into the interior of said vessel through said vent opening without blocking the escape of gases through the vent opening from the interior of the vessel, said probe extending downwardly at an angle from said base and entering said vessel through said vent opening as said vessel is supported upon said base.
Claim 14
Dependent Claim
22 words
A machine in accordance with claim 12, wherein said drive train is coupled to said vessel cap for rotation of said vessel.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |