Hydraulic hybrid swing drive system for excavators

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11421713
APP PUB NO 20180209449A1
SERIAL NO

15925821

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Importance

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Abstract

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A swing drive system for an excavator is provided which utilizes a prime mover mechanically connected to a first hydraulic pump/motor and a second hydraulic pump/motor mechanically connected to a swing mechanism. The system includes a hydraulic circuit connecting a hydraulic fluid reservoir, a hydraulic accumulator, the first hydraulic pump/motor, and the second hydraulic pump/motor. The system is operable in one mode where the second hydraulic pump/motor acts as a pump to retard movement of the swing mechanism and pressurized hydraulic fluid from the second hydraulic pump/motor is pumped into the hydraulic accumulator. The system is operable in another mode where the pressurized fluid from the hydraulic accumulator is used to assist the prime mover in driving hydraulic consumers, including the swing drive.

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Patent Owner(s)

Patent OwnerAddress
PARKER INTANGIBLES LLC6035 PARKLAND BOULEVARD CLEVELAND OH 44124

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Collett, Raymond Put-In-Bay, US 8 42
Cullman, Jeff Wadsworth, US 4 21
Jiang, Zhesheng Solon, US 5 8
Kimpel, Richard D Middleburg Hts., US 5 53
Kozul, Bogdan Hinckley, US 2 4
Zhang, Hao Twinsburg, US 1170 5565

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