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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
CUMMINS INC	500 JACKSON STREET COLUMBUS IN 47201

International Classification(s)

• F02D:CONTROLLING COMBUSTION ENGINES

• 2022 Application Filing Year
• F02D Class
• 599 Applications Filed
• 418 Patents Issued To-Date
• 69.79 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hart, Steve D	Columbus, US	1	0
# of filed Patents : 1 Total Citations : 0
Pettyjohn, Ryan Todd	Seattle, US	1	0
# of filed Patents : 1 Total Citations : 0
Sheridan, Todd A	Fortville, US	5	129
# of filed Patents : 5 Total Citations : 129

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• 0 Citation Count
• F02D Class

• 0 % this patent is cited more than
• 2 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Nov 4, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Nov 4, 2030
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Nov 4, 2034

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent Application No: 2021/0061,317

Rail Vehicle Having an Improved Cooling System and Method for Its Internal Combustion Engine

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Abstract

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A cooling system for a rail vehicle having an internal combustion engine as a generator of electricity is operative to exchange heat between a cooling fluid circulating in a cooling circuit connected to the internal combustion engine and air located in an underfloor space of the rail vehicle. A heat exchanger and a fan, located in the underfloor space, are fluidly connected to an exhaust in a side skirt depending from a floor of the rail vehicle. The fan is operative to force air from the underfloor space through the heat exchanger and through the exhaust to an ambient space located on an external side of the side skirt.

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