US5033672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile air conditioning system
Assignee: Mazda Motor Corp
•
Filing: 1990-06-08
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Granted: 1991-07-23
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Expires: 2010-06-08
Abstract
Abstract An automobile air conditioning device includes a ventilation system with a ventilation fan for discharging air contained in a passenger chamber from the vehicle. A dew condensation detector is adapted to detect a predetermined relative humidity for a dew point at which dew condensation on a rear window glass of the vehicle is presumed to occur. A controller actuates the ventilation system when the dew condensation detector detects the dew point while the vehicle is running.
Inventors
- 👤 Hiroaki Sakamoto
- 👤 Hiroyuki Sumihara
- 👤 Shigetoshi Doi
- 👤 Shinshi Kajimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
B; B60; B60H; B60H3/00; B60H3/02; B60H3/024; B60H1/00; B60H1/00642; B60H1/00735; B60H1/00785
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
An automobile air conditioning device for an automotive vehicle comprising: a ventilation system including a ventilation fan for discharging air contained within a passenger chamber of said vehicle out of the vehicle; window glass provided on said vehicle; dew condensation detecting means for detecting dew condensation inside said vehicle on said window glass; vehicle running detecting means for detecting whether or not said vehicle is running; and control means for actuating said ventilation system when said dew condensation detecting means detects dew condensation and said vehicle running detecting means detects that said vehicle is running.
Claim 2
Dependent Claim
95 words
An automobile air conditioning device for an automotive vehicle comprising: a ventilation system including a ventilation fan for discharging air contained within a passenger chamber of said vehicle out of the vehicle; window glass provided on said vehicle; dew condensation detecting means for detecting dew condensation inside said vehicle on said window glass; vehicle running detecting means for detecting whether or not said vehicle is running; and control means for actuating said ventilation system when said dew condensation detecting means detects dew condensation and said vehicle running detecting means detects that said vehicle is running.
Claim 3
Dependent Claim
34 words
An automobile air conditioning device as defined in claim 1, wherein said dew condensation detecting means detects whether humidity around said window glass has reached a dew point at which said dew condensation occurs.
Claim 4
Dependent Claim
31 words
An automobile air conditioning device as defined in claim 2, wherein said dew condensation detecting means comprises a moisture sensitive member having a resistance which varies according to humidity and temperature.
Claim 5
Dependent Claim
21 words
An automobile air conditioning device as defined in claim 2, wherein said dew point is set to 85% of relative humidity.
Claim 6
Dependent Claim
27 words
An automobile air control device as defined in claim 3, wherein said moisture sensitive member is disposed on a rear window glass and inside said passenger chamber.
Claim 7
Dependent Claim
43 words
An automobile air conditioning device as defined in claim 1, wherein said ventilation system includes ventilation duct means for communicating said passenger chamber with a trunk room of said vehicle and for communicating said trunk room with the atmosphere outside of said vehicle.
Claim 8
Dependent Claim
33 words
An automobile air conditioning device as defined in claim 6, and further comprising a ventilation fan disposed in said trunk room to force air contained in said passenger chambers through said duct means.
Claim 9
Dependent Claim
62 words
An automobile air conditioning device as defined in claim 7, wherein said ventilation duct means includes an intake duct having one end opening inside said passenger chamber below said rear window glass and another end opening inside said trunk room, and an exhaust duct having one end connected to said ventilation fan and another end opening to the atmosphere outside said vehicle.
Claim 10
Dependent Claim
32 words
An automobile air conditioning device as defined in claim 8, wherein said ventilation fan is disposed at a bottom of said trunk room and adjacent to a rear fender of said vehicle.
Claim 11
Dependent Claim
41 words
An automobile air conditioning device as defined in claim 9, wherein said ventilation system has a door member disposed between said other end of said exhaust duct and a rear bumper of said vehicle for opening and closing said exhaust duct.
Claim 12
Dependent Claim
18 words
An automobile air conditioning device as defined in claim 1, wherein said window is a rear window glass.
References Cited (Backward Citations)
US4424933A
Cited
US4852363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |