US3848428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system for a locomotive cab
Assignee: Vapor Corp
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Filing: 1973-05-21
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Granted: 1974-11-19
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Expires: 1993-05-21
Abstract
Abstract Air conditioning system for use to cool cabs of large vehicles such as locomotives, which includes a housing divided into upper and lower chambers, the upper chamber mounting the compressor and condenser and being exposed to the ambient, and the lower chamber mounting the evaporator and being exposed to the cab or compartment to be cooled. The condenser is arranged perpendicularly to the path of movement of the vehicle. A condensate tray is provided for the lower chamber to collect and prevent sloshing of the condensate from the evaporator.
Inventors
- 👤 J Rieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:45
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00371; B60H1/32; B60H1/3233; B61; B61C; B61C17/00; B61C17/04; F; F25; F25D; F25D19/00; F25D19/02; F25D21/00; F25D21/14; B60H1/00007; B60H1/00207; B60H2001/00235
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
283 words
An air conditioning system for a locomotive cab to be mounted in the roof of the locomotive cab, said system comprising a frame including a centrally and horizontally arranged panel, upper and lower covers on the top and bottom sides of the panel defining upper and lower chambers, the upper chamber being generally positioned above the roof and exposed to the atmosphere, the lower chamber being generally positioned below the roof and within the cab, a pair of heat exchanger condensing units in the upper chamber one at each the front and back ends thereof and extending vertically and perpendicular to the longitudinal axis of and the path of movement of the locomotive, means connecting said condenser units in parallel, a compressor unit in the upper chamber along one side thereof, air inlet openings in the upper cover at the front and back walls aligning with the condenser units, an air discharge opening in the upper cover, a fan in the upper chamber between the spaced condenser units arranged to draw air into the chamber through the condenser units and expel air through the air discharge opening, a heat exchanger evaporator unit in the lower chamber, an air inlet opening in the lower cover for the lower chamber aligned with said evaporator unit to allow air to move from the cab through the evaporator unit and into the lower chamber, air discharge opening means in the lower cover, a blower in the lower chamber including a housing having an inlet communicating with the lower chamber and outlet means communicating with the air discharge opening means to pull air through the evaporator unit and expel it through the discharge opening means into the cab.
Claim 2
Dependent Claim
283 words
An air conditioning system for a locomotive cab to be mounted in the roof of the locomotive cab, said system comprising a frame including a centrally and horizontally arranged panel, upper and lower covers on the top and bottom sides of the panel defining upper and lower chambers, the upper chamber being generally positioned above the roof and exposed to the atmosphere, the lower chamber being generally positioned below the roof and within the cab, a pair of heat exchanger condensing units in the upper chamber one at each the front and back ends thereof and extending vertically and perpendicular to the longitudinal axis of and the path of movement of the locomotive, means connecting said condenser units in parallel, a compressor unit in the upper chamber along one side thereof, air inlet openings in the upper cover at the front and back walls aligning with the condenser units, an air discharge opening in the upper cover, a fan in the upper chamber between the spaced condenser units arranged to draw air into the chamber through the condenser units and expel air through the air discharge opening, a heat exchanger evaporator unit in the lower chamber, an air inlet opening in the lower cover for the lower chamber aligned with said evaporator unit to allow air to move from the cab through the evaporator unit and into the lower chamber, air discharge opening means in the lower cover, a blower in the lower chamber including a housing having an inlet communicating with the lower chamber and outlet means communicating with the air discharge opening means to pull air through the evaporator unit and expel it through the discharge opening means into the cab.
Claim 3
Dependent Claim
75 words
An air conditioning system as defined in claim 1, wherein the bottom wall of the lower cover slopes and includes means for collecting and draining condensate having a plurality of separated condensate channels which inhibit sloshing of condensate, a condensate collection channel adjacent one end of the bottom wall, means formed on the bottom wall to define a plurality of drain channels feeding to said collection channel, and an outlet opening in said collection channel.
Claim 4
Dependent Claim
273 words
An air conditioning system for a locomotive cab to be mounted in the roof of the locomotive cab, said system comprising a frame including a centrally and horizontally arranged panel, upper and lower covers on the top and bottom sides of the panel defining upper and lower chambers, the upper chamber being generally positioned above the roof and exposed to the atmosphere, the lower chamber being generally positioned below the roof and within the cab, a heat exchanger condenser unit in the upper chamber, an aiR inlet opening in the upper cover aligning with said condenser unit, an air discharge opening in the upper cover, a fan in the upper chamber arranged to draw air into the chamber through the condenser unit and expel air through the air discharge opening, a heat exchanger evaporator unit in the lower chamber, an air inlet opening in the lower cover for the lower chamber aligned with said evaporator unit, an air discharge opening in the lower cover, a blower in the lower chamber for forcing air through the air inlet opening across the evaporator unit into the lower chamber and out through the air discharge opening into the cab, and said cover including side and bottom walls, said bottom wall having a sloping surface and means for collecting condensate and preventing sloshing of condensate onto said evaporator unit, and said means for collecting and preventing sloshing of condensate includes a condensate collection channel adjacent one end of the bottom wall, means formed on the bottom wall to define a plurality of drain channels feeding to said collection channel, and an outlet opening in said collection channel.
Claim 5
Dependent Claim
273 words
An air conditioning system for a locomotive cab to be mounted in the roof of the locomotive cab, said system comprising a frame including a centrally and horizontally arranged panel, upper and lower covers on the top and bottom sides of the panel defining upper and lower chambers, the upper chamber being generally positioned above the roof and exposed to the atmosphere, the lower chamber being generally positioned below the roof and within the cab, a heat exchanger condenser unit in the upper chamber, an aiR inlet opening in the upper cover aligning with said condenser unit, an air discharge opening in the upper cover, a fan in the upper chamber arranged to draw air into the chamber through the condenser unit and expel air through the air discharge opening, a heat exchanger evaporator unit in the lower chamber, an air inlet opening in the lower cover for the lower chamber aligned with said evaporator unit, an air discharge opening in the lower cover, a blower in the lower chamber for forcing air through the air inlet opening across the evaporator unit into the lower chamber and out through the air discharge opening into the cab, and said cover including side and bottom walls, said bottom wall having a sloping surface and means for collecting condensate and preventing sloshing of condensate onto said evaporator unit, and said means for collecting and preventing sloshing of condensate includes a condensate collection channel adjacent one end of the bottom wall, means formed on the bottom wall to define a plurality of drain channels feeding to said collection channel, and an outlet opening in said collection channel.
Claim 6
Dependent Claim
124 words
In an air conditioning system for a heavy vehicle, a condensing unit mounted on the upperside of the cab roof of the vehicle, said unit comprising a casing having opposed front and back walls extending perpendicular to the path of movement of the vehicle, opposed side walls and a top wall, air flow openings in the front and back walls and the top wall, a pair of condensing coils, one adjacent to and aligned with each of the front and back walls, means connecting said coils in parallel to split the cooling load therebetween, a fan mounted between said coils moving air upwardly through the opening in the top wall and drawing air flow through said condensing coils, and a pressure relief trap door.
Claim 7
Dependent Claim
124 words
In an air conditioning system for a heavy vehicle, a condensing unit mounted on the upperside of the cab roof of the vehicle, said unit comprising a casing having opposed front and back walls extending perpendicular to the path of movement of the vehicle, opposed side walls and a top wall, air flow openings in the front and back walls and the top wall, a pair of condensing coils, one adjacent to and aligned with each of the front and back walls, means connecting said coils in parallel to split the cooling load therebetween, a fan mounted between said coils moving air upwardly through the opening in the top wall and drawing air flow through said condensing coils, and a pressure relief trap door.
Claim 8
Dependent Claim
185 words
In an air conditioning system for a heavy vehicle, an evaporator unit mounted on the underside of the cab roof of the vehicle, said unit comprising a casing having opposed front and back walls, opposed side walls and a bottom wall, the front and back walls extending perpendicular to the path of movement of the vehicle, an evaporator coil extending between said opposed side walls and adjacent the front wall, an air inlet opening in the front wall aligned with said coil, a blower within said casing having an inlet communicating with the air in the casing, air discharge openings in said side walls, said blower having outlets communicating with said air discharge openings, said bottom wall sloping toward the back wall of the casing, a drain in the bottom wall, and means on the bottom wall for collecting and preventing sloshing of the condensate free surface including a condensate collection channel adjacent one end of the bottom wall, means formed on the bottom wall to define a plurality of drain channels feeding to said collection channel, and an outlet opening in said collection channel.
Claim 9
Dependent Claim
185 words
In an air conditioning system for a heavy vehicle, an evaporator unit mounted on the underside of the cab roof of the vehicle, said unit comprising a casing having opposed front and back walls, opposed side walls and a bottom wall, the front and back walls extending perpendicular to the path of movement of the vehicle, an evaporator coil extending between said opposed side walls and adjacent the front wall, an air inlet opening in the front wall aligned with said coil, a blower within said casing having an inlet communicating with the air in the casing, air discharge openings in said side walls, said blower having outlets communicating with said air discharge openings, said bottom wall sloping toward the back wall of the casing, a drain in the bottom wall, and means on the bottom wall for collecting and preventing sloshing of the condensate free surface including a condensate collection channel adjacent one end of the bottom wall, means formed on the bottom wall to define a plurality of drain channels feeding to said collection channel, and an outlet opening in said collection channel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |