US3589271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee making apparatus
Assignee: WESTERN URN Manufacturing CO
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Filing: 1969-07-25
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Granted: 1971-06-29
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Expires: 1989-07-25
Abstract
Abstract A coffee making apparatus in which a single piece container, molded of plastic material having insulation properties, forms a control chamber and a water heating chamber sharing a common wall, the water heating chamber receiving near its bottom wall a heating coil having extensions projecting to the op of the wall or partition and folded thereover for connection to an electrical source. A thermostat element is conductively connected to the heating coil and provided with a connecting member also folded over the wall. The water heating chamber receives at its upper portion a reservoir member having a depending supply tube terminating adjacent the heating coil to deliver cold water, and a siphon is provided having an upper end located above the bottom of the reservoir and a lower end terminating in a spray head located under the bottom wall of the water heating chamber. The reservoir member is intended to be filled with cold water, which may be supplied manually or may be supplied through a valve from a water supply, the valve being controlled by water level sensors.
Inventors
- 👤 James H Tarrant
- 👤 Arthur L Stoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:55
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/56
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
208 words
A coffee making apparatus, comprising: a. a single piece container structure including a bottom wall, sidewalls and a partition separating said container into a control chamber and a water heating chamber; b. a heating element adjacent the bottom wall of said water heating chamber, said heating element having extensions disposed adjacent said partition, reaching to the top thereof and terminating within said control chamber; c. means in said control chamber for controlling said heating element; d. a single piece reservoir tray received in the upper portion of said water heating chamber, said tray including a bottom wall having an integral depending discharge tube terminating adjacent the bottom wall of said water heating chamber, and a downwardly open integral siphon cap projecting above said bottom wall; e. a spray head disposed in the bottom wall of said water heating chamber; and a siphon tube extending from said spray head into said siphon cap; f. said water heating chamber adapted to be filled with water approximately to the level of the bottom wall of said tray, and said tray adapted to receive a supplementary charge of water sufficient to cause operation of said siphon tube thereby to cause discharge of water from said spray head corresponding to said supplemental charge.
Claim 2
Dependent Claim
208 words
A coffee making apparatus, comprising: a. a single piece container structure including a bottom wall, sidewalls and a partition separating said container into a control chamber and a water heating chamber; b. a heating element adjacent the bottom wall of said water heating chamber, said heating element having extensions disposed adjacent said partition, reaching to the top thereof and terminating within said control chamber; c. means in said control chamber for controlling said heating element; d. a single piece reservoir tray received in the upper portion of said water heating chamber, said tray including a bottom wall having an integral depending discharge tube terminating adjacent the bottom wall of said water heating chamber, and a downwardly open integral siphon cap projecting above said bottom wall; e. a spray head disposed in the bottom wall of said water heating chamber; and a siphon tube extending from said spray head into said siphon cap; f. said water heating chamber adapted to be filled with water approximately to the level of the bottom wall of said tray, and said tray adapted to receive a supplementary charge of water sufficient to cause operation of said siphon tube thereby to cause discharge of water from said spray head corresponding to said supplemental charge.
Claim 3
Dependent Claim
76 words
A coffee making apparatus, as defined in claim 1, wherein: a. a temperature sensing element is disposed adjacent said heating element; b. and a heat conducting member extends between said elements to transmit heat directly to said temperature sensing element in the event the heating element is not covered by water, said heat conducting member having, when covered by water, sufficient area to be maintained at water temperature whereby said temperature sensing element indicates water temperature.
Claim 4
Dependent Claim
57 words
A coffee making apparatus, as defined in claim 1, wherein: a. said container structure is open at its upper side exposing said control chamber and water heating chamber; b. a single piece cover is fitted on said container structure and includes a recessed perforated area overlying said tray for the pouring of water therethrough into said tray.
Claim 5
Dependent Claim
33 words
A coffee making apparatus, as defined in claim 1, wherein: a. a mounting member is secured to said extensions wherein said control chamber, and is secured to the upper portion of said partition.
Claim 6
Dependent Claim
44 words
A coffee making apparatus, as defined in claim 1, which further comprises: a. a water supply line terminating in said tray; b. a solenoid valve interposed in said line; c. and means for operating said solenoid valve to supply said supplementary charge of water.
Claim 7
Dependent Claim
70 words
A coffee making apparatus, as defined in claim 5, wherein said operating means includes: a. a momentarily actuated switch for initiating supply of water to said tray; b. a first water level sensor in said tray for terminating flow of water; c. and a second water level sensor in said heating chamber operable to nullify operation of said switch should it be engaged during discharge of water from said tray.
Claim 8
Dependent Claim
39 words
A coffee making apparatus, as defined in claim 5, wherein said operating means includes: a. an adjustable timer permitting operation of said valve for a preselected length of time calculated to fill said tray to a corresponding preselected level.
Claim 9
Independent Claim
167 words
An apparatus for supplying hot water to a coffee brewing vessel, comprising: a. a closed container structure including a bottom wall and a horizontal wall thereabove, said horizontal wall dividing the container into a lower chamber and an upper chamber; b. a depending discharge tube extending from said horizontal wall iNto proximity to said bottom wall; c. a siphon cap projecting upwardly from said horizontal wall, said cap being closed at its upper end and open at its lower end; d. a spray head set into said bottom wall; e. a siphon tube extending upwardly from said spray head into said siphon cap and terminating at a level above said horizontal wall; f. a heating element in said lower chamber; g. means for supporting a coffee brewing vessel under said spray head; h. said lower chamber being normally filled with water to the level of the lower open end of said siphon cap, the water being maintained in a heated condition by said heating element and means.
Claim 10
Independent Claim
167 words
An apparatus for supplying hot water to a coffee brewing vessel, comprising: a. a closed container structure including a bottom wall and a horizontal wall thereabove, said horizontal wall dividing the container into a lower chamber and an upper chamber; b. a depending discharge tube extending from said horizontal wall iNto proximity to said bottom wall; c. a siphon cap projecting upwardly from said horizontal wall, said cap being closed at its upper end and open at its lower end; d. a spray head set into said bottom wall; e. a siphon tube extending upwardly from said spray head into said siphon cap and terminating at a level above said horizontal wall; f. a heating element in said lower chamber; g. means for supporting a coffee brewing vessel under said spray head; h. said lower chamber being normally filled with water to the level of the lower open end of said siphon cap, the water being maintained in a heated condition by said heating element and means.
Claim 11
Dependent Claim
28 words
An apparatus, as defined in claim 8, wherein: a. said means for introducing water includes a cover for said container having an opening for manual introduction of water.
Claim 12
Dependent Claim
42 words
An apparatus, as defined in claim 8, wherein said means for introducing water includes: a. a water line terminating in said tray; b. a solenoid valve interposed in said line; c. and means for operating said valve to supply said measured quantity.
Claim 13
Dependent Claim
69 words
A coffee brewing apparatus, as defined in claim 10, wherein said operating means includes: a. a momentarily actuated switch for initiating introduction of water to said upper chamber; b. a first water level sensor in said tray for terminating flow of water; c. and a second water level sensor in said lower compartment operable to nullify operation of said switch during discharge of water into said coffee brewing vessel.
Claim 14
Dependent Claim
27 words
A coffee brewing apparatus, as defined in Claim 10, wherein said operating means includes: a. an adjustable timer permitting operation of said valve for a preselected interval.
Claim 15
Dependent Claim
53 words
An apparatus, as defined in claim 8, wherein: a. said container includes a passageway extending above said horizontal wall to a level above the maximum water level in said upper chamber and isolated therefrom; b. said heater includes extensions passing into said passage and exiting from said container above said maximum water level.
Claim 16
Dependent Claim
79 words
An apparatus, as defined in claim 8, wherein: a. a temperature sensing element is disposed in said lower chamber; b. a heat conducting member joins said heating element and sensing element to transmit heat from said heating element to said sensing element in the event said lower chamber is without water, thereby to prevent overheating of said heating element, said member having sufficient area to cause said member to be maintained at approximately water temperature when immersed in water.
References Cited (Backward Citations)
US2568474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |