US3690549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary heating system for automotive vehicles
Assignee: Individual
•
Filing: 1971-01-27
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Granted: 1972-09-12
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Expires: 1991-01-27
Abstract
Abstract An auxiliary heating system, composed of an auxiliary heater and automatic controls, is operatively mounted in an automobile to heat the interior of the car and to maintain it at a predetermined above-freezing subnormal temperature of say 40* F. during engine shut-off periods in cold weather when the ambient temperature is at or below said predetermined temperature.
Inventors
- 👤 Warren Frank Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:05
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; B60H1/2203; B60H1/2212; B60H2001/2268; B60H2001/2293
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
154 words
In an automotive vehicle of the type having a heat-generating vehicle-propelling engine, a main heating system using waste heat of the engine to heat the interior of the car only when the engine is operating, and a glassed area which, from time to time during cold weather, is subject to visibility-reducing formations of cold layers, an improvement comprising: A. an auxiliary heating system for heating the car interior during engine shut-down periods when the ambient atmospheric temperature is at or below a predetermined subnormal value, which is substantially below the normal room temperature range, said system including 1. auxiliary heating apparatus operative, when energized, to heat the interior of the car, 2. readying means operating, in response to the shut-down of said engine, to ready said auxiliary heating apparatus for energization, and 3. thermal response means operating, in response to car room temperatures at and below said predetermined value, for energizing said heating apparatus.
Claim 2
Dependent Claim
154 words
In an automotive vehicle of the type having a heat-generating vehicle-propelling engine, a main heating system using waste heat of the engine to heat the interior of the car only when the engine is operating, and a glassed area which, from time to time during cold weather, is subject to visibility-reducing formations of cold layers, an improvement comprising: A. an auxiliary heating system for heating the car interior during engine shut-down periods when the ambient atmospheric temperature is at or below a predetermined subnormal value, which is substantially below the normal room temperature range, said system including 1. auxiliary heating apparatus operative, when energized, to heat the interior of the car, 2. readying means operating, in response to the shut-down of said engine, to ready said auxiliary heating apparatus for energization, and 3. thermal response means operating, in response to car room temperatures at and below said predetermined value, for energizing said heating apparatus.
Claim 3
Dependent Claim
20 words
readying means operating, in response to the shut-down of said engine, to ready said auxiliary heating apparatus for energization, and
Claim 4
Dependent Claim
20 words
readying means operating, in response to the shut-down of said engine, to ready said auxiliary heating apparatus for energization, and
Claim 5
Dependent Claim
9 words
a heater chamber to heat said hot air chamber,
Claim 6
Dependent Claim
9 words
a heater chamber to heat said hot air chamber,
Claim 7
Dependent Claim
29 words
The improvement of claim 1 wherein: A. the readying means includes a switch which is normally open when the engine is operating and closed when it is shut down.
Claim 8
Dependent Claim
42 words
The improvement of claim 1 wherein: A. the thermal response means includes a switch which is normally open when the car room temperatures are above said predetermined value and closed when the car room temperatures are at or below said predetermined value.
Claim 9
Dependent Claim
7 words
a heater associated with said heater chamber,
Claim 10
Dependent Claim
7 words
a heater associated with said heater chamber,
Claim 11
Dependent Claim
21 words
thermal response means operating, in response to car room temperatures at and below said predetermined value, for energizing said heating apparatus.
Claim 12
Dependent Claim
21 words
thermal response means operating, in response to car room temperatures at and below said predetermined value, for energizing said heating apparatus.
Claim 13
Dependent Claim
8 words
a source of fluid fuel for said heater,
Claim 14
Dependent Claim
8 words
a source of fluid fuel for said heater,
Claim 15
Dependent Claim
27 words
The improvement of claim 1 wherein: A. said thermal response means includes time controlled means for delaying the energizing of said heating apparatus to a set time.
Claim 16
Dependent Claim
18 words
normally closed fluid flow means operative, when open, to supply fuel from said source to said heater, and
Claim 17
Dependent Claim
18 words
normally closed fluid flow means operative, when open, to supply fuel from said source to said heater, and
Claim 18
Dependent Claim
12 words
The improvement of claim 1 wherein: A. said auxiliary heating aPparatus includes
Claim 19
Dependent Claim
34 words
a pilot for igniting the heater fuel when supplied; and B. said thermal response means operates, in response to said car temperature by opening said fluid flow means to supply fuel to said heater.
Claim 20
Dependent Claim
34 words
a pilot for igniting the heater fuel when supplied; and B. said thermal response means operates, in response to said car temperature by opening said fluid flow means to supply fuel to said heater.
Claim 21
Dependent Claim
25 words
The improvement of claim 5 wherein: A. said pilot burns fluid fuel continuously during the operation of both of said main and auxiliary heating systems.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |