US4178494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micro-wave air heater
Assignee: Individual
•
Filing: 1977-11-10
•
Granted: 1979-12-11
•
Expires: 1997-11-10
Abstract
Abstract This disclosure relates to a micro-wave air heater which includes a generally upstanding frusto-conical air duct housing between opposite input and output end portions thereof, crossed tubular liquid conduits which open into an encirculating liquid chamber, and a plurality of micro-wave generating means externally of the liquid chamber for generating micro-wave energy for heating the liquid whereby air passing through the duct and passed the tubular conduits is heated. The liquid is self-circulating within the tubular conduits and the liquid chamber through liquid temperature gradients, and means are provided for selectively regulating the operation of the micro-wave generating means to create the liquid temperature gradients.
Inventors
- 👤 Frank P. Bottalico
- 👤 Frank P. Bottalico, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:51
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B6/802; F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/08; F24H3/081; F24H3/085; F24H2250/00; F24H2250/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A micro-wave air heater comprising a hollow air duct through which air is adapted to pass from an input end portion toward and through an output end portion thereof, a plurality of tubular conduits spanning said duct within an interior thereof between said input and output end portions, micro-wave transparent wall means externally of and in generally spaced relationship to said duct and defining therewith a liquid chamber, a liquid in said tubular conduits and said liquid chamber, and micro-wave generating means exteriorly of said liquid chamber for generating micro-wave energy for heating said liquid whereby air passing through said duct and past said tubular conduits is heated.
Claim 2
Dependent Claim
108 words
A micro-wave air heater comprising a hollow air duct through which air is adapted to pass from an input end portion toward and through an output end portion thereof, a plurality of tubular conduits spanning said duct within an interior thereof between said input and output end portions, micro-wave transparent wall means externally of and in generally spaced relationship to said duct and defining therewith a liquid chamber, a liquid in said tubular conduits and said liquid chamber, and micro-wave generating means exteriorly of said liquid chamber for generating micro-wave energy for heating said liquid whereby air passing through said duct and past said tubular conduits is heated.
Claim 3
Dependent Claim
24 words
The micro-wave air heater as defined in claim 1 wherein said micro-wave generating means are a plurality of micro-wave generators surrounding said wall means.
Claim 4
Dependent Claim
29 words
The micro-wave air heater as definced in claim 1 wherein said air duct is disposed generally vertically and is of a generally frusto-conical configuration as viewed in longitudinal cross-section.
Claim 5
Dependent Claim
22 words
The micro-wave air heater as defined in claim 1 wherein said duct, and conduits are made of material transparent to micro-wave energy.
Claim 6
Dependent Claim
18 words
The micro-wave air heater as defined in claim 1 wherein said tubular conduits are in alternating crossed relationship.
Claim 7
Dependent Claim
29 words
The micro-wave air heater as defined in claim 1 wherein said liquid is self-circulating within said tubular conduits and said liquid chamber through liquid temperature gradients of said liquid.
Claim 8
Dependent Claim
47 words
The micro-wave air heater as defined in claim 1 wherein said liquid is self-circulating within said tubular conduits and said liquid chamber through liquid temperature gradients of said liquid, and means to selectively regulate the operation of said micro-wave generating means to create said liquid temperature gradients.
Claim 9
Dependent Claim
68 words
The micro-wave air heater as defined in claim 1 wherein said liquid is self-circulating within said tubular conduits and said liquid chamber through liquid temperature gradients of said liquid, means to selectively regulate the operation of said micro-wave generating means to create said liquid temperature gradients, and pump means for circulating said liquid through said tubular conduits and said liquid chamber thereby augmenting the self-circulation of said liquid.
Claim 10
Dependent Claim
106 words
The micro-wave air heater as defined in claim 1 wherein said micro-wave generating means are a plurality of micro-wave generators surrounding said wall means, said air duct is disposed generally vertically and is of a generally frusto-conical configuration as viewed in longitudinal cross-section, said duct input end portion is below said duct output end portion and the latter being of a larger square area than the former, said duct, and conduits being made of material transparent to micro-wave energy, said tubular conduits being alternating crossed relationship, and said liquid being self-circulating within said tubular conduits and said liquid chamber through liquid temperature gradients of said liquid.
Claim 11
Dependent Claim
25 words
The micro-wave heater as defined in claim 9 including means for selectively regulating the operation of said micro-wave generators to create said liquid temperature gradients.
Claim 12
Dependent Claim
21 words
The micro-wave air heater as defined in claim 10 including air temperature detecting means for operating said micro-wave generator regulating means.
Claim 13
Dependent Claim
50 words
The micro-wave air heater as defined in claim 11 including means for sensing the level of liquid in said liquid chamber, and said micro-wave generator regulating means being deactivated to deactivate said micro-wave generators upon a predetermined liquid level within said liquid chamber being sensed by said level sensing means.
References Cited (Backward Citations)
US2585970A
Cited
US3778578A
Cited
US3891817A
Cited
US4006730A
Cited
US3920945A
Cited
US4029927A
Cited
US4114011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |