Spring devices – Fluid – Expansible-contractible chamber device
Patent
1995-06-06
1996-12-31
Oberleitner, Robert J.
Spring devices
Fluid
Expansible-contractible chamber device
267114, 72348, 72351, 60376, F16F 500
Patent
active
055886418
ABSTRACT:
A gas spring apparatus includes first and second cylinders each closed at both ends by end walls, first and second pistons each capable of axial displacement being disposed inside a fluid-filled inner space of the cylinders, the first piston dividing the first cylinder into two sub-spaces, the second piston dividing the second cylinder into two cylindrical chamber, first and second piston rods each of, which is connected to the corresponding piston, being mounted in a sliding and sealing fashion in one end wall, and a plurality of valves selectively communicating among two sub-spaces and two cylindrical chambers to decrease pressure inside one of the sub-spaces so as to cause the first piston to be locked for a predetermined period of time, and to cause the first and second pistons to move upwards and back to an initial position of each of the first and second pistons after a predetermined delay. The valves are openable and closable which are controlled by a control device.
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Oberleitner Robert J.
Schwartz Chris
Stromsholmens Mekaniska Verkstad AB
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