A dropper seatpost includes an outer tube, an inner tube disposed movably in the outer tube, and a pneumatic and hydraulic cylinder disposed between the inner and outer tubes and having an upper oil chamber, a lower oil chamber, and an air chamber. When the pneumatic and hydraulic cylinder is opened, the upper and lower oil chambers communicate with each other. When the pneumatic and hydraulic cylinder is closed, the upper and lower oil chambers do not communicate with each other. A floating piston is disposed between the air chamber and the lower oil chamber. When an oil is extracted from or injected into the upper oil chamber, or the oil is extracted from or injected into the lower oil chamber, the floating piston is moved toward or away from the bottom end of the pneumatic and hydraulic cylinder, thereby adjusting a maximum upward stroke of the inner tube.
DROPPER SEATPOST CAPABLE OF ADJUSTING MAXIMUM UPWARD STROKE
2025-07-10
Patent
Electronic Resource
English
IPC: | B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS |
DROPPER SEATPOST CAPABLE OF ADJUSTING MAXIMUM UPWARD STROKE
European Patent Office | 2025
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