Hydraulic actuator including a multi-head piston for hydraulic gearing

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12203491
APP PUB NO 20230339604A1
SERIAL NO

17726734

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Abstract

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A hydraulic actuator system of an aircraft includes a hydraulic actuator having a housing with a piston having a piston shaft with a piston head attached thereto and arranged within the housing. The piston head divides in internal volume of the housing into an extend cavity and a retract cavity and the extend cavity is configured to be connected to low pressure fluid source. The system also includes a pressure selector unit fluidly connected to the retract cavity and configured to be connected to the low pressure fluid source and to a high pressure fluid source. The unit include three solenoids with the first and second connected in parallel to the fluid sources and the third solenoid having a third solenoid first input connected to the first solenoid output, a third solenoid second input connected to the second solenoid output, and a third solenoid output connected to the retract cavity.

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Patent Owner(s)

Patent OwnerAddress
HAMILTON SUNDSTRAND CORPORATION2730 WEST TYVOLA ROAD FOUR COLISEUM CENTRE CHARLOTTE NC 28217

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doerner, Steve Enfield, US 8 5
O'Rorke, Morgan West Hartford, US 25 31
Susca, Ryan Prescott Windsor, US 38 9

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