| 摘要 |
A variable force cylinder device with a piston reciprocated by a pressurized fluid in a cylinder chamber, in which the piston has a large-diameter portion and a small-diameter portion, the cylinder chamber has a large-bore portion corresponding to the large-diameter portion of the piston and a small-bore portion corresponding to the small-diameter portion of the piston, and a variable force mechanism is provided for varying a pressure-receiving area of the piston under an interaction of the piston with the cylinder chamber varying depending on the phases of the piston stroke.
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