Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1994-01-19
1995-12-26
Hill, Mitchell J.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
180132, 3242072, 32420724, 324117H, 32420711, F04B 4902, G01B 714
Patent
active
054776759
ABSTRACT:
An apparatus for driving a piston with fluid power is disclosed. The apparatus includes a fluid filled cylinder having an inner and an outer wall and defining a longitudinal axis. A piston is slidably positioned in the cylinder to move along a path of travel parallel to the longitudinal axis. A magnet is coupled to the piston for movement with the piston, The apparatus further includes a pump in fluid communication with the cylinder and being selectively actuated to intermittently pump pressurized fluid into the cylinder to apply force to and move the piston in a first direction along the path of travel. A fluid releasing apparatus is provided to release fluid from the cylinder to move the piston in a direction opposite the first direction. The apparatus also includes a Hall effect sensor situated at a location along the outer wall of the cylinder for sensing a position of the piston by sensing a magnetic field associated with the magnet at the location of the sensor. Control circuitry is coupled to an output from the Hall effect sensor for actuating the pump.
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Outboard Marine Corporation (OMC) service manual--a 34 page chapter entitled "Power Steering". Note particularly, on p. 9-4, entitled Description of Power Steering System.
Ingraham Ronald D.
Washeleski John M.
Hill Mitchell J.
Nartron Corporation
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