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[CN202010934867.X] Piston of hydraulic press and hydraulic piston machine
[CN202010934867.X] Title of Piston and Hydraulic Piston Machine of Hydraulic Press: Piston and Hydraulic Piston Machine of Hydraulic Press Application Number: CN202010934867.X Applicant: Danfoss Co., Ltd. Application Date: 2020-9-8 Patent Type: The invention application describes a piston (1) of a hydraulic piston machine, the piston (1) has a hollow part (2) surrounded by a wall (3) and a piece arranged in the hollow part (4). Such pistons are used in low cost and high efficiency piston machines. To this end, at least two flexible rings (12, 13) are arranged between the insert (4) and the wall (3).
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