US3759161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drip-type coffee maker and the like
Assignee: Individual
•
Filing: 1972-03-01
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Granted: 1973-09-18
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Expires: 1992-03-01
Abstract
Abstract Water withdrawn from a supply tank is heated by an electric heater and is pumped upwardly through a distributor for discharge through a bed of ground coffee. An electric switch is responsive to the pressure of the water head in the tank and de-energizes the heater immediately upon substantially complete emptying of the tank so that no water remains in the tank to form evaporation deposits. Downwardly inclined baffles underlie the outlet of the distributor and disperse the discharged water through the coffee bed while reducing clogging of the distributor outlet due to evaporation deposits.
Inventors
- 👤 G Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:21
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/56; A47J31/04; A47J31/057; A47J31/0573; A47J31/542; A47J31/545
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
236 words
In an appliance for heating liquid and for forcing the liquid upwardly, the combination of, a support, a container on said support for holding a quantity of liquid, first and second conduits leading downwardly and upwardly, respectively, from the bottom of said container, said first conduit directly connected to and communicating with said container to receive liquid therefrom, an electrically energizable tubular heater mounted on said support beneath said container and communicating at its ends with the lower ends of said conduits, said heater being operable when energized to receive and heat liquid flowing downwardly from said first conduit and to pump the heated liquid upwardly into said second conduit, a third conduit directly connected to, leading downwardly from and communicating with the bottom of said container, means responsive to the fluid pressure in said third conduit and operable to de-energize said heater when said pressure falls to a predetermined value, and a line establishing communication between said first and third conduits, said line being connected to said first conduit at a location between said heater and the bottom of said container and being connected to said third conduit at a location between the bottom of said container and said pressure-responsive means whereby any air bubbles in said third conduit are drawn out of the latter and into said first conduit through said line by the liqUid flowing downwardly to said heater through said first conduit.
Claim 2
Dependent Claim
236 words
In an appliance for heating liquid and for forcing the liquid upwardly, the combination of, a support, a container on said support for holding a quantity of liquid, first and second conduits leading downwardly and upwardly, respectively, from the bottom of said container, said first conduit directly connected to and communicating with said container to receive liquid therefrom, an electrically energizable tubular heater mounted on said support beneath said container and communicating at its ends with the lower ends of said conduits, said heater being operable when energized to receive and heat liquid flowing downwardly from said first conduit and to pump the heated liquid upwardly into said second conduit, a third conduit directly connected to, leading downwardly from and communicating with the bottom of said container, means responsive to the fluid pressure in said third conduit and operable to de-energize said heater when said pressure falls to a predetermined value, and a line establishing communication between said first and third conduits, said line being connected to said first conduit at a location between said heater and the bottom of said container and being connected to said third conduit at a location between the bottom of said container and said pressure-responsive means whereby any air bubbles in said third conduit are drawn out of the latter and into said first conduit through said line by the liqUid flowing downwardly to said heater through said first conduit.
Claim 3
Dependent Claim
68 words
An appliance as defined in claim 1 further including a horizontally extending distributor conduit communicating at one end with the upper end of said second conduit, a series of downwardly opening discharge holes formed in the other end portion of said distributor conduit, and downwardly inclined baffles underlying at least some of said holes for deflecting the discharged liquid outwardly away from the sides of said distributor conduit.
Claim 4
Dependent Claim
79 words
An appliance as defined in claim 2 in which said distributor conduit is a tube of substantially rectangular cross-section, said holes being formed in the bottom of said tube and being arranged in two rows extending lengthwise of the tube along the opposite side edge portions thereof, said baffles being inclined downwardly and outwardly from the sides of the tube and having inner ends located adjacent the inboard sides of the holes and near the bottom of the tube.
Claim 5
Dependent Claim
150 words
In an appliance for heating liquid and for discharging the liquid in a series of downwardly flowing streams, the combination of, a support, a container on said support for holding a quantity of liquid, a conduit leading upwardly from the bottom of said container, an electrically energizable tubular heater mounted on said support beneath said container and communicating with the container and said conduit, said heater being operable when energized to receive and heat liquid flowing downwardly from said container and to pump the heated liquid upwardly into said conduit, a horizontally extending distributor tube communicating at one end with the upper end of said conduit, a series of downwardly opening discharge holes formed in the other end portion of said distributor tube, and downwardly inclined baffles underlying at least some of said holes for deflecting downwardly flowing streams of liquid outwardly away from the sides of said distributor tube.
Claim 6
Dependent Claim
150 words
In an appliance for heating liquid and for discharging the liquid in a series of downwardly flowing streams, the combination of, a support, a container on said support for holding a quantity of liquid, a conduit leading upwardly from the bottom of said container, an electrically energizable tubular heater mounted on said support beneath said container and communicating with the container and said conduit, said heater being operable when energized to receive and heat liquid flowing downwardly from said container and to pump the heated liquid upwardly into said conduit, a horizontally extending distributor tube communicating at one end with the upper end of said conduit, a series of downwardly opening discharge holes formed in the other end portion of said distributor tube, and downwardly inclined baffles underlying at least some of said holes for deflecting downwardly flowing streams of liquid outwardly away from the sides of said distributor tube.
Claim 7
Dependent Claim
76 words
An appliance as defined in claim 4 in which said distributor tube is of rectangular cross-section, said holes being formed in the bottom of the tube and being arranged in two rows extending lengthwise of the tube along the opposite side edge portions thereof, said baffles being inclined downwardly and outwardly from the sides of the tube and having inner ends located adjacent the inboard sides of the holes and near the bottom of the tube.
Claim 8
Dependent Claim
48 words
An appliance as defined in claim 5 further including a flat mounting strip anchored to the bottom of said tube, the baffles for each row of holes being spaced from one another along said tube and all being formed integrally at their inner ends with said mounting strip.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |