US3732801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle passenger compartment pressure relief system
Assignee: Ford Motor Co
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Filing: 1971-07-19
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Granted: 1973-05-15
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Expires: 1991-07-19
Abstract
Abstract A vehicle passenger compartment pressure relief system comprising a valve controlled discharge outlet in a body panel through which air may be exhausted to the atmosphere. The opened or closed position of the valve is correlated with the position of a control lever operable to regulate the heat output of the vehicle heating unit. The control lever is movable between cool and warm positions with the exhaust valve correspondingly being wholly opened in a full cool position and wholly closed in a full warm position of the control lever.
Inventors
- 👤 S Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:18
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/24; B60H1/248
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
180 words
A pressure relief system for a vehicle passenger compartment heated by a forced air heater unit having a temperature control means for varying the heat input to the air flowing through the heater unit, the pressure relief system comprising: an air discharge outlet in a wall of the passenger compartment, a valve means contiguous the discharge outlet for varying the air flow through the outlet between a minimum and a maximum flow, a control lever coupled to the temperature control means of the forced air heater unit, the control lever being movable between two positions corresponding to minimum and maximum heat input into the passenger compartment, and movement transmitting means coupling the control lever to the valve means, the coupled relationship of the control lever to the valve means such that movement of the control lever from a position of minimum to a position of maximum heat input into the passenger compartment results in inverse movement of the valve means from a position permitting maximum to a position permitting minimum air flow from the vehicle passenger compartment, and vice versa.
Claim 2
Dependent Claim
180 words
A pressure relief system for a vehicle passenger compartment heated by a forced air heater unit having a temperature control means for varying the heat input to the air flowing through the heater unit, the pressure relief system comprising: an air discharge outlet in a wall of the passenger compartment, a valve means contiguous the discharge outlet for varying the air flow through the outlet between a minimum and a maximum flow, a control lever coupled to the temperature control means of the forced air heater unit, the control lever being movable between two positions corresponding to minimum and maximum heat input into the passenger compartment, and movement transmitting means coupling the control lever to the valve means, the coupled relationship of the control lever to the valve means such that movement of the control lever from a position of minimum to a position of maximum heat input into the passenger compartment results in inverse movement of the valve means from a position permitting maximum to a position permitting minimum air flow from the vehicle passenger compartment, and vice versa.
Claim 3
Dependent Claim
192 words
A vehicle passenger compartment pressure relief system, comprising: an air discharge outlet in a wall of the passenger compartment, a valve means contiguous the discharge outlet for varying the air flow through the outlet between a minimum and a maximum flow, the valve means being a flap valve hinged at one edge to a louvered valve body portion fitted in the outlet in the body panel, the flap valve and valve body portion being integrally formed of plastic, a control lever means coupled to a temperature control member of a forced air heater unit, the control lever means being movable between two positions corresponding to minimum and maximum heat input into the passenger compartment, and movement transmitting means coupling the control lever means to the valve means, the coupled relationship of the control lever means to the valve means being such that movement of the control lever means from a position of minimum to a position of maximum heat input into the passenger compartment results in inverse movement of the valve means from a position of maximum to a position of minimum air flow from the vehicle passenger compartment, and vice versa.
Claim 4
Dependent Claim
192 words
A vehicle passenger compartment pressure relief system, comprising: an air discharge outlet in a wall of the passenger compartment, a valve means contiguous the discharge outlet for varying the air flow through the outlet between a minimum and a maximum flow, the valve means being a flap valve hinged at one edge to a louvered valve body portion fitted in the outlet in the body panel, the flap valve and valve body portion being integrally formed of plastic, a control lever means coupled to a temperature control member of a forced air heater unit, the control lever means being movable between two positions corresponding to minimum and maximum heat input into the passenger compartment, and movement transmitting means coupling the control lever means to the valve means, the coupled relationship of the control lever means to the valve means being such that movement of the control lever means from a position of minimum to a position of maximum heat input into the passenger compartment results in inverse movement of the valve means from a position of maximum to a position of minimum air flow from the vehicle passenger compartment, and vice versa.
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |