US3731458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle gas dryer purging system and method
Assignee: Ingersoll Rand Co
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Filing: 1971-01-20
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Granted: 1973-05-08
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Expires: 1991-01-20
Abstract
Abstract A system and method for purging gas dryers, such as compressed air dryers, for use with a vehicle in which the gas is used for the vehicle''s systems, such as the air brake system. The invention heat exchanges the exhaust gases of the vehicle with the input ambient air to heat the latter, and reactivates or purges drying towers with the purge gas product resulting therefrom.
Inventors
- 👤 W Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/261; B01D53/02; B01D53/04; B01D53/0407; B01D53/0438; B01D2258/00; B01D2258/01; B01D2259/00; B01D2259/40; B01D2259/402; B01D2259/45; B01D2259/4566
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
14 words
A system, according to claim 1, wherein: said source comprises an exhaust pipe assembly.
Claim 2
Dependent Claim
13 words
A system, according to claim 1, wherein: said source comprises a heated-coolant line.
Claim 3
Dependent Claim
42 words
A system, according to claim 2, wherein: said first means comprises piping throughconnected at one end thereof with said exhaust pipe assembly, opening at the other end thereof onto the atmosphere, and having an intermediate portion thereof defined by said heat exchanger.
Claim 4
Independent Claim
71 words
A method for purging gas dryer systems having moisture-extracting means, for use with a vehicle having a source of heated fluid, comprising the steps of: moving the vehicle relative to the ambient air effectively to produce ambient air pressure and velocity having a ram effect capability; heat-exchanging the ram effective ambient air with fluid from said source; and conducting the heat-exchanged ambient air through said means for purging of moisture therefrom.
Claim 5
Dependent Claim
33 words
A method, according to claim 5, wherein the heat-exchanging step comprises: conducting a portion of fluid from said source into heat-exchange relationship with said ambient air; and discharging said portion into the atmosphere.
Claim 6
Dependent Claim
33 words
A method, according to claim 5, wherein the heat-exchanging step comprises: conducting a portion of fluid from said source into heat-exchange relationship with said ambient air; and returning said portion to said source.
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |