Patent US3981231A successfully refreshed from Google Patents.
US3981231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beverage-making apparatus
Assignee: Pifco Ltd
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Filing: 1975-10-03
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Granted: 1976-09-21
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Expires: 1995-10-03
Abstract
Abstract A beverage making apparatus comprising a fixed, hermetically sealable, thermostatically controlled, water-heating, electric kettle mounted above a removable infusion vessel in which the beverage is prepared using hot water which syphons from the kettle via a syphon tube into the vessel through an opening in the top thereof. The syphon tube, which is in a generally vertical plane, has an upper part which is coiled and extends through a base of the kettle to discharge the water into the opening in the vessel.
Inventors
- 👤 Frederick Simm Grundy
- 👤 John Byron King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:45
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/52; A47J31/54
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A beverage-making apparatus comprising a water-heating kettle with removable lid means which when fitted on said kettle results in the interior of the kettle being in substantial fluid-tight isolation from the surrounding atmosphere, said kettle being provided with an electrically powered heating element connected to a control circuit for connection to a supply of electrical current, a syphon tube provided inside the kettle and having an open end disposed adjacent to the base of said kettle, said tube having a first tube portion extending upwardly from said end to a second tube portion comprising more than one coil of tube to prevent or impede pre-syphoning, and a third tube portion extending downwardly from the second tube portion to an open second end of the tube disposed below the base of the kettle for introducing hot water into a tea-pot or other infusion vessel, disposed below the kettle, and a thermally operated device responsive to the temperature of the water in the kettle to interrupt a conductive path supplying electrical energy to said heating element, when the temperature rises above a predetermined value.
Claim 2
Dependent Claim
182 words
A beverage-making apparatus comprising a water-heating kettle with removable lid means which when fitted on said kettle results in the interior of the kettle being in substantial fluid-tight isolation from the surrounding atmosphere, said kettle being provided with an electrically powered heating element connected to a control circuit for connection to a supply of electrical current, a syphon tube provided inside the kettle and having an open end disposed adjacent to the base of said kettle, said tube having a first tube portion extending upwardly from said end to a second tube portion comprising more than one coil of tube to prevent or impede pre-syphoning, and a third tube portion extending downwardly from the second tube portion to an open second end of the tube disposed below the base of the kettle for introducing hot water into a tea-pot or other infusion vessel, disposed below the kettle, and a thermally operated device responsive to the temperature of the water in the kettle to interrupt a conductive path supplying electrical energy to said heating element, when the temperature rises above a predetermined value.
Claim 3
Dependent Claim
18 words
A beverage-making apparatus as claimed in claim 1 in which the kettle is affixedly mounted on the apparatus.
Claim 4
Dependent Claim
28 words
A beverage-making apparatus as claimed in claim 1 in which the tea-pot can be removed from below the kettle without the latter or the syphon tube being moved.
Claim 5
Dependent Claim
50 words
A beverage-making apparatus as claimed in claim 1 in which the control circuit includes switch means arranged for actuation for permitting electrical energisation of the heating element, and said switch means being actuable by the tea-pot or other infusion vessel when the latter is placed in position below the kettle.
Claim 6
Dependent Claim
32 words
A beverage-making apparatus as claimed in claim 1 in which a tray is mounted over said kettle, and the tray is displaceable to give access to a filler opening of the kettle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |