Patent US4390124A successfully refreshed from Google Patents.
US4390124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and ventilation system for vehicles
Assignee: Saab AB
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Filing: 1981-02-23
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Granted: 1983-06-28
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Expires: 2001-02-23
Abstract
Abstract A heating and ventilation system for a vehicle, including a ventilation housing comprising two housing halves mutually connected along at least one longitudinal plane, said halves forming together a space for the flow of air and enclosing fan means, a heat exchanger and a number of flap means for regulating the air flow. In the ventilation housing there is mounted a longitudinal intermediate wall between the housing halves. Said wall at least partially divides the space between the housing halves into two part spaces, each including a cold air duct, a hot air duct, a mixing chamber and a distribution chamber for leading ventilation air to different outlets in a vehicle passenger compartment. Said system enables using simple means to obtain individual regulation and heating of ventilation air at different outlets in a vehicle passenger compartment.
Inventors
- 👤 Sten E. Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:34
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007; B60H1/00021; B60H1/00064; B60H1/00071; B60H1/00642; B60H1/0065; B60H2001/00114; B60H2001/00135; B60H2001/00185; B60H2001/00192
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
In a heating and ventilating system for a vehicle, a housing comprising two housing halves connected along a longitudinal plane, said housing enclosing heat exchanger means, an air inlet chamber and fan means for passing outside air into the inlet chamber; a longitudinal intermediate wall mounted between the housing halves, said wall at least partially separating the space between the housing halves into two part spaces; and in each part space: a cold air duct in communication with the inlet chamber and with a mixing chamber, a hot air duct for passing selecting portions of air from the cold air duct through the heat exchanger means to the mixing chamber, a substantially cylindrical distribution chamber in communication with the mixing chamber and with a plurality of outlets leading to different parts of the interior of the vehicle, said distribution chamber including a distribution flap disposed in a diametric plane in the distribution chamber and pivotable about the axis of the distribution chamber for selectively directing air to any of said outlets.
Claim 2
Dependent Claim
171 words
In a heating and ventilating system for a vehicle, a housing comprising two housing halves connected along a longitudinal plane, said housing enclosing heat exchanger means, an air inlet chamber and fan means for passing outside air into the inlet chamber; a longitudinal intermediate wall mounted between the housing halves, said wall at least partially separating the space between the housing halves into two part spaces; and in each part space: a cold air duct in communication with the inlet chamber and with a mixing chamber, a hot air duct for passing selecting portions of air from the cold air duct through the heat exchanger means to the mixing chamber, a substantially cylindrical distribution chamber in communication with the mixing chamber and with a plurality of outlets leading to different parts of the interior of the vehicle, said distribution chamber including a distribution flap disposed in a diametric plane in the distribution chamber and pivotable about the axis of the distribution chamber for selectively directing air to any of said outlets.
Claim 3
Dependent Claim
25 words
A heating and ventilation system as claimed in claim 1, wherein the intermediate wall comprises at least one flat plate mounted between the housing halves.
Claim 4
Dependent Claim
70 words
A heating and ventilation system as claimed in claim 1, wherein each distribution chamber is formed with at least three outlets, which are placed within a sector having an angle of 180° or less, and that the outlet of each distribution chamber is adapted to open out into outlets in the vehicle passenger compartment via separate ducts and/or conduits, preferably close to the driver's and passenger seats in the vehicle.
Claim 5
Dependent Claim
63 words
A heating and ventilation system as claimed in claim 3, wherein outlets from one distribution chamber in the ventilation housing are connected to outlets in the vehicle passenger compartment on one side of the longitudinal centreline of the vehicle, and wherein outlets from the other distribution chamber are connected to outlets in the vehicle passenger compartment on the other side of said centreline.
Claim 6
Dependent Claim
40 words
A heating and ventilation system as claimed in claim 4, including means for enabling individual regulation of the ventilation air and for enabling individual heating of ventilating air on either side of a longitudinal centreline through the vehicle passenger compartment.
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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |