Fluid-powered precision oscillator

Details Fluid-powered precision oscillator Fluid-powered precision oscillator

F - Mech Eng,Light,Heat,Weapons

15

B

103/29, 138/40

F15B 9/09 (2006.01)

Patent

CA 2024249

The present invention relates to a fluid-powered precision oscillator having a cylindrical housing (3), a piston (9) displaceable in the housing and connected to a piston rod (8) extended through a front end wall (4) of the housing, and a control means (11, 16, 22, 24) for automatically reversing the direction of movement of the piston and piston rod. According to the invention the piston rod (8) is hollow, and a screw (11) is rotatably journalled in a rear end wall (5) of the housing (3) extends with a first end thereof into the hollow piston rod (8) and engaging a nut (16) being fixed to the piston rod (8), and the screw at its other end carries a toothed code disk (22) cooperating with a reading fork (24) for feeding pulses corresponding to the movement of the piston (9) and of the piston rod (8) to a control circuit, which in turn emits signals for actuating the oscillator (1) dependent upon the pulses fed into the circuit.

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