US3570390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee maker, or the like
Assignee: Individual
•
Filing: 1969-12-04
•
Granted: 1971-03-16
•
Expires: 1989-12-04
Abstract
Abstract A drip-type coffee maker which maintains the hot water in contact with the ground coffee for at least approximately the same length of time irrespective of the quantity of coffee being brewed, within the capacity range of the apparatus. The coffee maker includes a drip pot, a water reservoir, a heat actuable, flow-through pump for pumping hot water from the reservoir to the drip pot, an electric heater for actuating the pump, and adjustable thermostatic control means regulating the heat output of the heater for causing the pump to deliver different quantities of hot water from the reservoir to the drip pot in approximately equal overall time intervals, the control means being manually adjustable to vary the overall pumping rate of the pump as a function of the quantity of water in the reservoir.
Inventors
- 👤 Hans Jordan
- 👤 Peter C Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:27
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/542; A47J31/545; A47J31/04; A47J31/057; A47J31/0573
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
In a water delivery system for a drip pot, the combination of: a. a water reservoir; b. a heat actuable pump for pumping water from said reservoir at a desired temperature; c. an electric heater for actuating said pump; and d. control means regulating the heat output of said heater for varying the overall pumping rate of said pump as a function of the volume of water in said reservoir.
Claim 2
Dependent Claim
70 words
In a water delivery system for a drip pot, the combination of: a. a water reservoir; b. a heat actuable pump for pumping water from said reservoir at a desired temperature; c. an electric heater for actuating said pump; and d. control means regulating the heat output of said heater for varying the overall pumping rate of said pump as a function of the volume of water in said reservoir.
Claim 3
Dependent Claim
81 words
In a water delivery system for a drip pot containing ground coffee, the combination of: a. a water reservoir; b. a heat actuable, flow-through pump for pumping water from said reservoir to the ground coffee in the drip pot at a desired temperature; c. an electric heater for actuating said pump; and d. control means regulating the heat output of said heater for causing said pump to pump different quantities of water from said reservoir in approximately equal overall time intervals.
Claim 4
Dependent Claim
81 words
In a water delivery system for a drip pot containing ground coffee, the combination of: a. a water reservoir; b. a heat actuable, flow-through pump for pumping water from said reservoir to the ground coffee in the drip pot at a desired temperature; c. an electric heater for actuating said pump; and d. control means regulating the heat output of said heater for causing said pump to pump different quantities of water from said reservoir in approximately equal overall time intervals.
Claim 5
Dependent Claim
52 words
A water delivery system according to claim 2 wherein said control means includes means for initially maintaining the heater energized throughout a time interval sufficiently long to thoroughly wet the ground coffee with hot water, when making a quantity of coffee less than capacity, before reducing the heat output of the heater.
Claim 6
Dependent Claim
57 words
A water delivery system as set foRth in claim 2 wherein said control means comprises thermostat means responsive to the heat output of said heater for regulating the heat output thereof, said thermostat means being manually adjustable to vary the overall pumping rate of said pump as a function of the quantity of water in said reservoir.
Claim 7
Dependent Claim
79 words
In a drip-type coffee maker, or the like, the combination of: a. a drip pot; b. a water reservoir; c. a heat actuable, flow-through pump for pumping hot water from said reservoir to said drip pot; d. an electric heater for actuating said pump; and e. control means regulating the heat output of said heater for causing said pump to deliver different quantities of hot water from said reservoir to said drip pot in approximately equal overall time intervals.
Claim 8
Dependent Claim
79 words
In a drip-type coffee maker, or the like, the combination of: a. a drip pot; b. a water reservoir; c. a heat actuable, flow-through pump for pumping hot water from said reservoir to said drip pot; d. an electric heater for actuating said pump; and e. control means regulating the heat output of said heater for causing said pump to deliver different quantities of hot water from said reservoir to said drip pot in approximately equal overall time intervals.
Claim 9
Dependent Claim
59 words
A coffee maker, or the like, as set forth in claim 5 wherein said control means comprises thermostat means responsive to the heat output of said heater for regulating the heat output thereof, said thermostat means being manually adjustable to vary the overall pumping rate of said pump as a function of the quantity of water in said reservoir.
Claim 10
Dependent Claim
60 words
A coffee maker, or the like, according to claim 6 wherein said thermostat means comprises a switch in series with said heater which is closed substantially continuously when said thermostat means is adjusted for the maximum quantity of water in said reservoir and which is closed only intermittently when said thermostat means is adjusted for a smaller quantity of water.
Claim 11
Dependent Claim
23 words
A coffee maker, or the like, as defined in claim 7 wherein said drip pot is a separate vessel located alongside said reservoir.
Claim 12
Dependent Claim
22 words
A coffee maker, or the like according to claim 8 including an auxiliary, continuously operating electric heater for heating said drip pot.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |