US4751359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave hot water kettle
Assignee: Individual
•
Filing: 1987-01-09
•
Granted: 1988-06-14
•
Expires: 2007-01-09
Abstract
Abstract A microwave hot water kettle employing a three magnetron source housed in an accylene or plastic shell having a metallic outer casing. Uniformly distributed throughout the kettle are thin hollow platelets which hold the water to be heated. The reflective outer casing in conjunction with the three magnetron source provides near instantaneous heating of the water without cold spots. The kettle incorporates features for thermostatically controlling water temperature and providing pressure relief of the steam generated.
Inventors
- 👤 Ian R. Jamieson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:37
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6491; H05B6/6494; A; A47; A47J; A47J27/00; A47J27/21
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
73 words
An instantaneous hot water heating apparatus comprising: a source of electromagnetic energy capable of producing high frequency energy; a vessel adapted as a resonance cavity for the electromagnetic energy source; a handle positioned on the vessel for grasping; a spout opening in the vessel for filling and emptying the vessel; and a control means located on the vessel for controlling the temperature and relieving the pressure of the water heated in the vessel.
Claim 2
Dependent Claim
73 words
An instantaneous hot water heating apparatus comprising: a source of electromagnetic energy capable of producing high frequency energy; a vessel adapted as a resonance cavity for the electromagnetic energy source; a handle positioned on the vessel for grasping; a spout opening in the vessel for filling and emptying the vessel; and a control means located on the vessel for controlling the temperature and relieving the pressure of the water heated in the vessel.
Claim 3
Dependent Claim
22 words
The heating apparatus of claim 1 wherein the vessel is made of a accylene or plastic shell having a metallic outer casing.
Claim 4
Dependent Claim
15 words
The heating apparatus of claim 1 wherein the electromagnetic energy source comprises three magnetron units.
Claim 5
Dependent Claim
18 words
The heating apparatus of claim 3 wherein each magnetron unit has a power output of approximately 200 watts.
Claim 6
Dependent Claim
31 words
The heating apparatus of claim 2 wherein the vessel has a curvilinear shape to cause reflective radiation from the walls of the vessel to transverse a central region of the vessel.
Claim 7
Dependent Claim
88 words
An instantaneous hot water heating apparatus comprising: a source of electromagnetic energy capable of producing high frequency energy; a vessel adapted as a resonance cavity for the electromagnetic energy source; a plurality of platelets housed in the vessel for holding water to be heated; a handle positioned on the vessel for grasping; a spout in communication with the platelets for filling and emptying the vessel; and a control means located on the vessel for controlling the temperature and relieving the pressure of the water heated in the vessel.
Claim 8
Dependent Claim
88 words
An instantaneous hot water heating apparatus comprising: a source of electromagnetic energy capable of producing high frequency energy; a vessel adapted as a resonance cavity for the electromagnetic energy source; a plurality of platelets housed in the vessel for holding water to be heated; a handle positioned on the vessel for grasping; a spout in communication with the platelets for filling and emptying the vessel; and a control means located on the vessel for controlling the temperature and relieving the pressure of the water heated in the vessel.
Claim 9
Dependent Claim
22 words
The heating apparatus of claim 6 wherein the vessel is made of a accylene or plastic shell having a metallic outer casing.
Claim 10
Dependent Claim
15 words
The heating apparatus of claim 6 wherein the electromagnetic energy source comprises three magnetron units.
Claim 11
Dependent Claim
18 words
The heating apparatus of claim 8 wherein each magnetron unit has a power output of approximately 200 watts.
Claim 12
Dependent Claim
31 words
The heating apparatus of claim 7 wherein the vessel has a curvilinear shape to cause reflective radiation from the walls of the vessel to transverse a central region of the vessel.
Claim 13
Dependent Claim
19 words
The heating apparatus of claim 6 wherein the platelets are evenly distributed throughout the central region of the vessel.
Claim 14
Dependent Claim
18 words
The heating apparatus of claim 6 wherein the platelets are made of accylene, plastic, or other dielectric material.
Claim 15
Dependent Claim
103 words
A portable instantaneous hot water heating apparatus comprising: a source of electromagnetic energy capable of producing high frequency energy; a vessel adapted as a resonance cavity for the electromagnetic energy source; a base supporting the vessel and providing electrical connections to the electromagnetic energy source; a plurality of platelets housed in the vessel for holding water to be heated; a handle positioned on the vessel for grasping; a spout in communication with the platelets for filling and emptying the vessel; and a control means located on the vessel for controlling the temperature and relieving the pressure of the water heated in the vessel.
Claim 16
Dependent Claim
103 words
A portable instantaneous hot water heating apparatus comprising: a source of electromagnetic energy capable of producing high frequency energy; a vessel adapted as a resonance cavity for the electromagnetic energy source; a base supporting the vessel and providing electrical connections to the electromagnetic energy source; a plurality of platelets housed in the vessel for holding water to be heated; a handle positioned on the vessel for grasping; a spout in communication with the platelets for filling and emptying the vessel; and a control means located on the vessel for controlling the temperature and relieving the pressure of the water heated in the vessel.
Claim 17
Dependent Claim
22 words
The heating apparatus of claim 13 wherein the vessel is made of a accylene or plastic shell having a metallic outer casing.
Claim 18
Dependent Claim
15 words
The heating apparatus of claim 13 wherein the electromagnetic energy source comprises three magnetron units.
Claim 19
Dependent Claim
18 words
The heating apparatus of claim 15 wherein each magnetron unit has a power output of approximately 200 watts.
Claim 20
Dependent Claim
31 words
The heating apparatus of claim 14 wherein the vessel has a curvilinear shape to cause reflective radiation from the walls of the vessel to transverse a central region of the vessel.
Claim 21
Dependent Claim
19 words
The heating apparatus of claim 13 wherein the platelets are evenly distributed throughout the central region of the vessel.
Claim 22
Dependent Claim
18 words
The heating apparatus of claim 13 wherein the platelets are made of accylene, plastic, or other dielectric material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |