Patent US4222320A successfully refreshed from Google Patents.
US4222320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee maker
Assignee: AAA Office Coffee Service Inc
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Filing: 1978-10-27
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Granted: 1980-09-16
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Expires: 1998-10-27
Abstract
Abstract A coffee brewing apparatus has a hot water reservoir which sets, unconnected, on a housing above a grounds basket. The carafe rests upon a warming plate below the basket. The control unit is attached to the reservoir and the control unit is held by two screws to the housing so that the control unit and the reservoir may be readily removed as a unit from the housing for maintenance. The pouring tray is clamped to the top of the reservoir to form a vapor seal between the hot water reservoir and pouring tray. The vapor seal prevents the machines "boiling dry" by preventing vapors from escaping to condense on the apparatus.
Inventors
- 👤 Billy J. Castleberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:13
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/10; A47J31/103; A47J31/44; A47J31/54
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
233 words
In a coffee making apparatus having a. a hot water reservoir containing (i) a heating coil, and (ii) at least one thermostat, b. a pouring tray setting on top the reservoir, c. a tube extending from the bottom of the tray to near the bottom of the reservoir, d. a spray head in the bottom of the reservoir, e. a warming plate to receive a carafe, and f. a housing supporting the reservoir above the warming plate; the improved structure comprising: g. a spray tube connected to the spray head, h. said spray tube extending up into the reservoir to j. an integral inverted U-shaped top thereof, k. the opening of the tube below the bight of the inverted U, and m. the opening being spaced from the remainder of the tube by a distance equal to at least the outer diameter of the tube, n. all parts of the spray tube being below the bottom of the pouring tray, o. rack means on the housing for holding a grounds basket below the spray head, p. control means for supplying energy to the heating coil responsive to the thermostat, q. an opening in the housing surrounding said spray head, r. a chassis with said control means attached thereto, s. said chassis detachably connected to said housing, t. said chassis detachably connected to said reservoir, and u. said reservoir setting unconnected on said housing.
Claim 2
Dependent Claim
233 words
In a coffee making apparatus having a. a hot water reservoir containing (i) a heating coil, and (ii) at least one thermostat, b. a pouring tray setting on top the reservoir, c. a tube extending from the bottom of the tray to near the bottom of the reservoir, d. a spray head in the bottom of the reservoir, e. a warming plate to receive a carafe, and f. a housing supporting the reservoir above the warming plate; the improved structure comprising: g. a spray tube connected to the spray head, h. said spray tube extending up into the reservoir to j. an integral inverted U-shaped top thereof, k. the opening of the tube below the bight of the inverted U, and m. the opening being spaced from the remainder of the tube by a distance equal to at least the outer diameter of the tube, n. all parts of the spray tube being below the bottom of the pouring tray, o. rack means on the housing for holding a grounds basket below the spray head, p. control means for supplying energy to the heating coil responsive to the thermostat, q. an opening in the housing surrounding said spray head, r. a chassis with said control means attached thereto, s. said chassis detachably connected to said housing, t. said chassis detachably connected to said reservoir, and u. said reservoir setting unconnected on said housing.
Claim 3
Dependent Claim
28 words
The invention as defined in claim 1 further comprising: v. a vapor seal between the tray and reservoir, and w. a clamp attaching the tray to the reservoir.
Claim 4
Dependent Claim
159 words
In a coffee making apparatus having a. a hot water reservoir containing (i) a heating coil, and (ii) at least one thermostat, b. a pouring tray setting on top the reservoir, c. a tube extending from the bottom of the tray to near the bottom of the reservoir, d. a spray head in the bottom of the reservoir, e. a warming plate to receive a carafe, f. a housing supporting the reservoir above the warming plate, g. rack means for holding a grounds basket below the spray head, and h. control means for supplying energy to the heating coil responsive to the thermostat, the improved structure comprising: j. said rack means attached to said housing, k. an opening in the housing surrounding said spray head, m. a chassis with said control means attached thereto, n. said chassis detachably connected to said housing, o. said chassis detachably connected to said reservoir, and p. said reservoir setting unconnected on said housing.
Claim 5
Dependent Claim
159 words
In a coffee making apparatus having a. a hot water reservoir containing (i) a heating coil, and (ii) at least one thermostat, b. a pouring tray setting on top the reservoir, c. a tube extending from the bottom of the tray to near the bottom of the reservoir, d. a spray head in the bottom of the reservoir, e. a warming plate to receive a carafe, f. a housing supporting the reservoir above the warming plate, g. rack means for holding a grounds basket below the spray head, and h. control means for supplying energy to the heating coil responsive to the thermostat, the improved structure comprising: j. said rack means attached to said housing, k. an opening in the housing surrounding said spray head, m. a chassis with said control means attached thereto, n. said chassis detachably connected to said housing, o. said chassis detachably connected to said reservoir, and p. said reservoir setting unconnected on said housing.
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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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |