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Patent US3273799A successfully refreshed from Google Patents.
US3273799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive booster heater
Assignee: Stewart Warner Corp
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Filing: 1964-02-10
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Granted: 1966-09-20
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Gordon J Fairbanks
- 👤 Staiger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:58
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/02; B60H1/14; B60H1/18; B60H1/03; B60H1/036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A BOOSTER HEATER FOR USE WITH A CONVENTIONAL VEHICLE CAB HEATER SYSTEM HAVING MEANS FOR HEATING AIR INCLUDING THE VEHICLE ENGINE, MEANS FOR DISTRIBUTING THE HEATED AIR TO THE VEHICLE CAB, AND MEANS FOR FORCING THE HEATED AIR THROUGH THE HEATING AND DISTRIBUTING MEANS TO THE VEHICLE CAB; SAID BOOSTER HEATER COMPRISING A BURNER; A HEAT EXCHANGER FOR THE BURNER HAVING AN INLET FOR CONNECTION TO SAID HEATING MEANS AND AN OUTLET FOR CONNECTION TO THE DISTRIBUTING MEANS OF SAID VEHICLE; MEANS PROVIDING UNHEATED AIR TO SAID BURNER HEAT EXCHANGER; VALVE MEANS BETWEEN THE UNHEATED AIR PROVIDING MEANS AND SAID BURNER HEAT EXCHANGER OPERABLE TO PERMIT THE UNHEATED AIR TO PASS TO SAID BURNER HEAT EXCHANGER ONLY WHEN THE PRESSURE OUTPUT OF THE VEHICLE AIR FORCING MEANS AT SAID VALVE MEANS IS LESS THAN THE PRESSURE OUTPUT OF SAID UNHEATED AIR PROVIDING MEANS AT SAID VALVE MEANS; AND TEMPERATURE RESPONSIVE MEANS FOR CONTROLLING THE OPERATION OF SAID BURNER TO CONTROL THE TEMPERATURE OF THE AIR PASSING TO THE VEHICLE CAB.
Claim 2
Dependent Claim
170 words
A BOOSTER HEATER FOR USE WITH A CONVENTIONAL VEHICLE CAB HEATER SYSTEM HAVING MEANS FOR HEATING AIR INCLUDING THE VEHICLE ENGINE, MEANS FOR DISTRIBUTING THE HEATED AIR TO THE VEHICLE CAB, AND MEANS FOR FORCING THE HEATED AIR THROUGH THE HEATING AND DISTRIBUTING MEANS TO THE VEHICLE CAB; SAID BOOSTER HEATER COMPRISING A BURNER; A HEAT EXCHANGER FOR THE BURNER HAVING AN INLET FOR CONNECTION TO SAID HEATING MEANS AND AN OUTLET FOR CONNECTION TO THE DISTRIBUTING MEANS OF SAID VEHICLE; MEANS PROVIDING UNHEATED AIR TO SAID BURNER HEAT EXCHANGER; VALVE MEANS BETWEEN THE UNHEATED AIR PROVIDING MEANS AND SAID BURNER HEAT EXCHANGER OPERABLE TO PERMIT THE UNHEATED AIR TO PASS TO SAID BURNER HEAT EXCHANGER ONLY WHEN THE PRESSURE OUTPUT OF THE VEHICLE AIR FORCING MEANS AT SAID VALVE MEANS IS LESS THAN THE PRESSURE OUTPUT OF SAID UNHEATED AIR PROVIDING MEANS AT SAID VALVE MEANS; AND TEMPERATURE RESPONSIVE MEANS FOR CONTROLLING THE OPERATION OF SAID BURNER TO CONTROL THE TEMPERATURE OF THE AIR PASSING TO THE VEHICLE CAB.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |