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US4064795A
Expired / Lapsed
US
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Automatic bypass coffee brewer
Assignee: Individual
•
Filing: 1976-06-01
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Granted: 1977-12-27
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Expires: 1996-06-01
Abstract
Abstract An automatic coffee brewer including a water heating tank, a funnel-like holder for ground coffee, a siphon device for dispensing a predetermined amount of hot water from the tank through the grounds holder, and a bypass valve for directing approximately 40% of the hot water around the grounds and directly to an unheated, thermo-insulated beaker so that the resultant brew has extracted about 60% of the soluble solids in the coffee to yield a better tasting brew free of bitterness and astringency. The use of the thermo-insulated beaker enables the brewed coffee to be kept hot without further heating for several hours and avoids bitterness derived by continuous heating.
Inventors
- 👤 Maria Elena Perdomo Ackerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:20
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/057; A47J31/06; A47J31/0621
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
75 words
An automatic coffee brewer comprising: a water tank, means for heating water in said tank, a holder for coffee grounds, a beaker for brewed coffee positioned under said grounds holder, and means for dispensing a predetermined amount of hot water from said tank to said grounds holder, said means including bypass means for conducting a portion of said predetermined amount of hot water directly to said beaker so as to bypass grounds in said holder.
Claim 2
Dependent Claim
75 words
An automatic coffee brewer comprising: a water tank, means for heating water in said tank, a holder for coffee grounds, a beaker for brewed coffee positioned under said grounds holder, and means for dispensing a predetermined amount of hot water from said tank to said grounds holder, said means including bypass means for conducting a portion of said predetermined amount of hot water directly to said beaker so as to bypass grounds in said holder.
Claim 3
Dependent Claim
33 words
An automatic coffee brewer according to claim 1, wherein said bypass means is operative to bypass about 36 to 47% of the hot water away from contact with coffee grounds in the holder.
Claim 4
Dependent Claim
31 words
An automatic coffee brewer according to claim 1, wherein said bypass means is operative to bypass about 40% of the hot water away from contact with coffee grounds in the holder.
Claim 5
Dependent Claim
98 words
An automatic coffee brewer according to claim 1, wherein said means for dispensing hot water comprises a conduit leading from the upper portion of said water tank to a discharge outlet above the grounds holder, said bypass means being a stream divider valve device inserted in said conduit and having an inlet passage and two outlet passages, each of smaller size than the inlet passage, one of said outlet passages leading to said discharge outlet and other leading to a discharge position so located as to prevent hot water being discharged therefrom to contact grounds in said holder.
Claim 6
Dependent Claim
48 words
An automatic coffee brewer according to claim 4, wherein said stream divider valve device inlet passage has an area equal to the sum of the areas of said two outlet passages and said one outlet passage has approximately a 50% greater cross-sectional area than the other outlet passage.
Claim 7
Dependent Claim
86 words
An automatic coffee brewer according to claim 4, wherein said holder for coffee grounds comprises a generally conical-shaped outer container and a removable conical-shaped spider for supporting a filter and coffee grounds, the conical side wall surfaces of the spider being completely spaced inwardly from the corresponding conical side wall surfaces of said outer container, the discharge position of said other outlet passage of the stream divider valve device being directly above the space separating the said spider from the outer container of the grounds holder.
Claim 8
Dependent Claim
37 words
An automatic coffee brewer according to claim 5, wherein a manifold passage connects said input and outlet passages, said manifold passage being closed by a removable plug whose removal permits cleaning of the stream divider valve device.
Claim 9
Dependent Claim
27 words
An automatic coffee brewer according to claim 1, wherein said beaker is a thermal insulating vessel which avoids the need for heating the brewed coffee discharged thereto.
Claim 10
Dependent Claim
66 words
An automatic coffee brewer according to claim 1, wherein is additionally provided means for feeding said predetermined amount of water to said tank for heating, said water feeding means including an open topped tray having a bottom sloping to a discharge outlet positioned above the water tank, whereby said predetermined amount of water may be manually poured into said tray for feeding into said water tank.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |