Patent US3584568A successfully refreshed from Google Patents.
US3584568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single unit coffee maker
Assignee: Charter Design and Manufacturing Co
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Filing: 1969-06-20
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Granted: 1971-06-15
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Expires: 1989-06-20
Abstract
Abstract A coffee brewing unit providing a heating tank arranged for holding a quantity of water during heating and including control means for, after heating the water to a predetermined temperature, releasing the same over a measured amount of ground coffee with the releasing means including siphoning means for completely draining the tank with air relief means for draining the flow lines to the spray head and including automatic reset devices to prepare the unit for the next amount of water and the next brewing heating, cycle.
Inventors
- 👤 Leonard P Hausam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:16
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/10; A47J31/103; A47J31/44; A47J31/54; A47J31/106
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A coffee brewing device including: a. a ground coffee confining basket; b. a liquid receiving heating tank; c. means in said tank for heating liquid delivered thereto; d. a discharge conduit having a discharge head communicating with and receiving liquid from said tank to spray the same over said ground coffee; and e. valve means arranged in said discharge conduit responsive to said heating means for delivering heated liquid from said tank when said liquid reaches a predetermined temperature.
Claim 2
Dependent Claim
79 words
A coffee brewing device including: a. a ground coffee confining basket; b. a liquid receiving heating tank; c. means in said tank for heating liquid delivered thereto; d. a discharge conduit having a discharge head communicating with and receiving liquid from said tank to spray the same over said ground coffee; and e. valve means arranged in said discharge conduit responsive to said heating means for delivering heated liquid from said tank when said liquid reaches a predetermined temperature.
Claim 3
Dependent Claim
32 words
The structure set forth in claim 1 and conduit means having ends respectively communicating with said tank and said valve, said conduit arranged and constructed to siphon said liquid from said tank.
Claim 4
Dependent Claim
43 words
The structure set forth in Claim 2 wherein: a. the bottom surface of said receiving tank is provided with a liquid accumulation area therein; and, b. the end of said conduit communicating with said tank arranged to draw liquid from said accumulation area.
Claim 5
Dependent Claim
16 words
The structure set forth in claim 1 and air relief means communicating with said discharge conduit.
Claim 6
Dependent Claim
18 words
The structure set forth in claim 1 and float valve means in said tank controlling said heating means.
Claim 7
Dependent Claim
21 words
The structure set forth in claim 5 and heat sensing means controlling said heating means to prevent overheating of said device.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |