Patent US4815366A successfully refreshed from Google Patents.
US4815366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee or tea maker
Assignee: Melitta Haushaltsprodukte GmbH and Co KG
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Filing: 1987-12-21
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Granted: 1989-03-28
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Expires: 2007-12-21
Abstract
Abstract A coffee or tea maker includes a freshwater container, a heater for heating water withdrawn from the freshwater container, a filter holder receptacle and a feed pipe extending from the heater and arranged for carrying hot water from the heater; an intermediate container into which the feed pipe opens to introduce hot water thereinto. There is further provided an arrangement for periodically emptying the hot water from the intermediate container into the filter holder receptacle.
Inventors
- 👤 Reinhard Hauslein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:37
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/057; A47J31/0573; A47J31/44; A47J31/46; A47J31/462; A47J31/465
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
196 words
In a coffee or tea maker including a freshwater container; heating means for heating water withdrawn from said freshwater container; a filter holder receptacle arranged for receiving a filter and a dosage of coffee or tea to be brewed by hot water during a brewing process; and a feed pipe extending from said heating means and being arranged for carrying hot water from said heating means; the improvement comprising (a) an intermediate container; said feed pipe opening into said intermediate container to introduce hot water thereinto; (b) a guide means for guiding water from said intermediate container directly into said filter holder receptacle for effecting the brewing process; (c) emptying means having an operating state for causing hot water to be rapidly introduced from the intermediate container into said filter holder receptacle; said emptying means having a non-operating state in which no water flow from the intermediate container into the filter holder receptacle occurs; and (d) control means connected to said emptying means for automatically periodically placing said emptying means into the operating state for automatically intermittently and in increments introducing hot water from said intermediate container into said filter holder receptacle during each brewing process.
Claim 2
Dependent Claim
196 words
In a coffee or tea maker including a freshwater container; heating means for heating water withdrawn from said freshwater container; a filter holder receptacle arranged for receiving a filter and a dosage of coffee or tea to be brewed by hot water during a brewing process; and a feed pipe extending from said heating means and being arranged for carrying hot water from said heating means; the improvement comprising (a) an intermediate container; said feed pipe opening into said intermediate container to introduce hot water thereinto; (b) a guide means for guiding water from said intermediate container directly into said filter holder receptacle for effecting the brewing process; (c) emptying means having an operating state for causing hot water to be rapidly introduced from the intermediate container into said filter holder receptacle; said emptying means having a non-operating state in which no water flow from the intermediate container into the filter holder receptacle occurs; and (d) control means connected to said emptying means for automatically periodically placing said emptying means into the operating state for automatically intermittently and in increments introducing hot water from said intermediate container into said filter holder receptacle during each brewing process.
Claim 3
Dependent Claim
36 words
A coffee or tea maker as defined in claim 1, wherein said emptying means comprises a pump arranged for drawing water from said intermediate container and a motor connected to said pump for driving said pump.
Claim 4
Dependent Claim
36 words
A coffee or tea maker as defined in claim 1, wherein said control means comprises a water level sensor means for generating a signal in response to a predetermined level of water in said intermediate container.
Claim 5
Dependent Claim
28 words
A coffee or tea maker as defined in claim 1, wherein said intermediate container has a capacity which is a fraction of the capacity of said freshwater container.
Claim 6
Dependent Claim
45 words
A coffee or tea maker as defined in claim 1, wherein said emptying means comprises an outlet opening provided in said intermediate container and an openable and closable shutoff gate arranged at said outlet opening of said intermediate container for controlling discharge of water therefrom.
Claim 7
Dependent Claim
29 words
A coffee or tea maker as defined in claim 5, wherein said shutoff gate is pivotally supported in said intermediate container for swinging movements between open and closed positions.
Claim 8
Dependent Claim
33 words
A coffee or tea maker as defined in claim 5, wherein said outlet opening is defined by an outlet nipple affixed to said intermediate container; said gate being arranged in said outlet nipple.
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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |