Patent US3584564A successfully refreshed from Google Patents.
US3584564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating system for a railway car
Assignee: ACF Industries Inc
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Filing: 1969-03-12
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Granted: 1971-06-15
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Expires: 1989-03-12
Abstract
Abstract A system for aerating and controlling the temperature of ladings, such as potatoes or other perishable commodities, in a covered hopper railway car, includes a portion of the center sill, formed as an air duct, and connections between the center sill and perforated plates at the bottom of the hoppers. To complete the air circuit, there are also provided ducts at the top of the car connected to one side of an air blower, the other side of which is connected to the center sill.
Inventors
- 👤 Dallas W Rollins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:47
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0018; B61D27/0027; B61D7/00; B61D7/14; B61D7/16; B61D7/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
A covered hooper railway car having a plurality of hoppers anD a center sill extending the entire length of the car and having an intermediate portion intersecting all said hoppers; a wall in said center sill at each end of said intermediate portion for sealing off said intermediate portion from the remainder of the center sill; a blower mounted on said car outside said hoppers; means connecting one side of said blower to an upper portion of the hoppers; conduit means connecting the other side of the blower to said intermediate portion of the center sill; a plate closing the bottom of said intermediate portion of the center sill to form an air conduit and having a plurality of spaced openings therein; and air ducts means extending downwardly from the spaced openings in said cover plate and outwardly to the bottom of each hopper whereby air is circulated through the car including the intermediate portion of the center sill.
Claim 2
Dependent Claim
159 words
A covered hooper railway car having a plurality of hoppers anD a center sill extending the entire length of the car and having an intermediate portion intersecting all said hoppers; a wall in said center sill at each end of said intermediate portion for sealing off said intermediate portion from the remainder of the center sill; a blower mounted on said car outside said hoppers; means connecting one side of said blower to an upper portion of the hoppers; conduit means connecting the other side of the blower to said intermediate portion of the center sill; a plate closing the bottom of said intermediate portion of the center sill to form an air conduit and having a plurality of spaced openings therein; and air ducts means extending downwardly from the spaced openings in said cover plate and outwardly to the bottom of each hopper whereby air is circulated through the car including the intermediate portion of the center sill.
Claim 3
Dependent Claim
45 words
A covered hopper car according to claim 1, wherein each hopper includes an outlet having a movable horizontal gate including a perforated plate and a movable closure beneath said plate, said air duct means communicating with the space between said plate and said closure member.
Claim 4
Dependent Claim
65 words
A covered hopper car according to claim 1, wherein each hopper has an outlet including a pair of gates on opposite sides of the center sill, each gate including a horizontal perforated plate extending across the bottom of the outlet, and means for removing said plates to permit unloading through said outlets, said air duct means being connected to said outlets below said perforated plates.
Claim 5
Dependent Claim
50 words
A car according to claim 1, including a second blower for moving air in the direction opposite to that in which air is moved by the first-mentioned blower, means for rendering one of said blowers operative and the other inoperative, and means for selectively heating or cooling the circulating air.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |