DK139937C

A hydraulic or pneumatic device is provided with a cylinder and piston system for providing a rapid stroke and a power stroke. The piston part of said system comprises a piston-rod like plunger piston, which at its lower end slidingly surrounds a tube extending upwardly from, but not secured to the...

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Hauptverfasser: BERKESTAD K-E, BRYNTSE A I
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A hydraulic or pneumatic device is provided with a cylinder and piston system for providing a rapid stroke and a power stroke. The piston part of said system comprises a piston-rod like plunger piston, which at its lower end slidingly surrounds a tube extending upwardly from, but not secured to the bottom of the cylinder. The cylinder is also provided with two working chambers, which at least partly peripherically surround said piston. Passages are formed in said piston and in said tube for connection of the two working chambers.