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US3570592A Expired / Lapsed US ⏱️ 0.0 years remaining

Aerating system for a covered hopper railway car

Assignee: ACF Industries Inc
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Filing: 1969-02-18
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Granted: 1971-03-16
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Expires: 1989-02-18
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Abstract

Abstract A system for aerating and controlling the temperature of ladings, such as perishable commodities, in a covered hopper railway car, includes a blower communicating with the interior of the car through the side sills and side stakes, formed as conduits, and through perforations in the side stakes and in slope plates of the hoppers. To complete the air circuit, there are also provided ducts at the top of the car. The flow of air may be reversed and the air may be heated or cooled.

Inventors

  • 👤 Dallas W Rollins

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 22:24
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0018; B61D27/0027

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 113 words
In a covered hopper railway car having sidewalls including side sheets and an array of reinforcing vertical hollow side stakes on said side sheets extending throughout the length and height thereof; means for aerating lading in said car, comprising air propelling means mounted on the car; first air conveying means connecting the bottom of said side stakes to one side of said air propelling means; means for placing said side stakes in communication with the interior of said car; second air conveying means connecting the other side of said air propelling means to the interior of said car, whereby air is circulated through said car via said air conveying means and said stakes.
Claim 2
Dependent Claim 113 words
In a covered hopper railway car having sidewalls including side sheets and an array of reinforcing vertical hollow side stakes on said side sheets extending throughout the length and height thereof; means for aerating lading in said car, comprising air propelling means mounted on the car; first air conveying means connecting the bottom of said side stakes to one side of said air propelling means; means for placing said side stakes in communication with the interior of said car; second air conveying means connecting the other side of said air propelling means to the interior of said car, whereby air is circulated through said car via said air conveying means and said stakes.
Claim 3
Dependent Claim 28 words
A car according to claim 1, wherein said stakes are on the outside of said sidewalls, said sidewalls having perforations along each of the stakes in registry therewith.
Claim 4
Dependent Claim 25 words
A car according to claim 2, wherein said first air conveying means includes channel-shaped side sills extending along said sidewalls and communicating with said stakes.
Claim 5
Dependent Claim 42 words
A car according to claim 1 having a plurality of hoppers each having a bottom outlet structure, and means for discharging air into said bottom outlet structure, including an air conduit between said first air conveying means and each bottom outlet structure.
Claim 6
Dependent Claim 19 words
A car according to claim 4, including opposed perforated slope sheets forming a false bottom for said outlet structure.
Claim 7
Dependent Claim 173 words
A covered hopper railway car for aerating lading transported by the car and comprising a pair of opposed sides; an array of hollow stakes on each side, said stakes having air passages communicating with the interior of the car; a plurality of hoppers between the sides, each hopper having a bottom outlet structure with discharge opening therein for unloading the lading from the caR; a closure for the discharge opening movable between open and closed positions; means to provide a continuous supply of air to lading within the car, said means comprising a blower mounted on said car, air conduits leading from the blower to the stakes to provide a supply of air to the interior of the car to aerate the lading, said air conduits including a hollow side sill extending along the lower portion of each side for substantially the length of the car, the stakes on each side of the car extending upwardly from one of the side sills; and an air outlet adjacent the upper end of the car.
Claim 8
Dependent Claim 173 words
A covered hopper railway car for aerating lading transported by the car and comprising a pair of opposed sides; an array of hollow stakes on each side, said stakes having air passages communicating with the interior of the car; a plurality of hoppers between the sides, each hopper having a bottom outlet structure with discharge opening therein for unloading the lading from the caR; a closure for the discharge opening movable between open and closed positions; means to provide a continuous supply of air to lading within the car, said means comprising a blower mounted on said car, air conduits leading from the blower to the stakes to provide a supply of air to the interior of the car to aerate the lading, said air conduits including a hollow side sill extending along the lower portion of each side for substantially the length of the car, the stakes on each side of the car extending upwardly from one of the side sills; and an air outlet adjacent the upper end of the car.
Claim 9
Dependent Claim 33 words
A car according to claim 6, wherein the air outlet includes an upper hollow side plate member extending longitudinally along the upper portion of each side for substantially the length of the car.
Claim 10
Dependent Claim 48 words
A car according to claim 2, wherein said second air conveying means includes a pair of channel-shaped side sills extending along the upper edges of the sidewalls of the car for substantially the entire length of the car and being in communication with the interior of the car.

References Cited (Backward Citations)

US2605690A Cited
US3486241A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-15 1974-09-14 1975-03-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-15 1978-09-14 1979-03-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-15 1982-09-14 1983-03-16 $7700.00 Window Closed / Lapsed

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