US4236056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave heater
Assignee: Individual
•
Filing: 1979-01-29
•
Granted: 1980-11-25
•
Expires: 1999-01-29
Abstract
Abstract A microwave heater is provided and comprises a tank having a plurality of fluid conduits disposed therein and communicating with a fluid inlet and a fluid outlet. Each fluid conduit comprises a plastic tube with an elongated metal core disposed therein to form an annular flow chamber within the tube. The inlet of a fluid transfer system is coupled to the outlet from the tank while a source of relatively cool fluid is connected to the tank inlet. A microwave generator is operatively coupled to the tank to generate microwave energy throughout the tank in order to heat the water and metal cores within the fluid conduits.
Inventors
- 👤 Donald D. Allen
- 👤 Earl D. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:36
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B6/802; H05B6/804
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A fluid heater comprising, a housing defining a chamber therein, fluid passage means disposed within said chamber and having an inlet and an outlet which are in fluid communication with the exterior of the housing, said fluid passage means further comprising a plurality of first conduits, each first conduit having a metal core axially disposed therein to form an annular flow chamber between each core and each conduit; and means for selectively radiating microwave energy throughout the chamber whereby the fluid in the conduits as well as the metal cores absorb the energy and are heated.
Claim 2
Dependent Claim
96 words
A fluid heater comprising, a housing defining a chamber therein, fluid passage means disposed within said chamber and having an inlet and an outlet which are in fluid communication with the exterior of the housing, said fluid passage means further comprising a plurality of first conduits, each first conduit having a metal core axially disposed therein to form an annular flow chamber between each core and each conduit; and means for selectively radiating microwave energy throughout the chamber whereby the fluid in the conduits as well as the metal cores absorb the energy and are heated.
Claim 3
Dependent Claim
48 words
The invention as defined in claim 1 wherein said fluid passage means further comprises at least one manifold having a plurality of said conduits which are spaced apart and substantially parallel to each other, each conduit being fluidly connected to larger diameter transfer conduit at each axial end.
Claim 4
Dependent Claim
45 words
The invention as defined in claim 2 wherein said fluid passage means comprises a plurality of said manifolds, the planes of said manifolds being spaced apart from but substantially parallel to each other, and a plurality of conduit risers for fluidly connecting the manifolds together.
Claim 5
Dependent Claim
49 words
The invention as defined in claim 3 wherein said risers are alternately connected at opposite ends of the manifolds so that fluid passing through the conduits of a single manifold flows in one direction while the flow in the conduits of the adjacent manifold is in the opposite direction.
Claim 6
Dependent Claim
14 words
The invention as defined in claim 1 wherein said cores are made of steel.
Claim 7
Dependent Claim
16 words
The invention as defined in claim 1 wherein said conduit is made of a plastic material.
References Cited (Backward Citations)
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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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |