Fluid handling – Systems – With selective motion for plural valve actuator
Patent
1998-03-20
1999-01-12
Walton, George L.
Fluid handling
Systems
With selective motion for plural valve actuator
74471R, 74527, 74531, 251 65, 251297, 335215, F15B 1304, F16K 1118, F16K 3106
Patent
active
058574921
ABSTRACT:
A manually operable control device, such as a joystick, includes a plurality of actuators for operating hydraulic valves of a machine. A handle has a sphere received within a cavity formed between a pair of seat portions which are moveable with respect to each other. The handle produces movement of at least one of the plurality of actuators when the sphere is pivoted within the cavity. An electromagnetic coil generates a magnetic field that causes the seat portions to be attracted toward each other which increases friction between the sphere and the seat. A control circuit applies electric current to the electromagnetic coil whenever the machine is turned on and disconnects the electric current when the machine is turned off. The friction between the sphere and the seat holds the control device in an operating position set by the machine operator and springs return the control device to a neutral position when the machine is turned off.
REFERENCES:
patent: 2667237 (1954-01-01), Rabinow
patent: 2958233 (1960-11-01), Johnson
patent: 3365975 (1968-01-01), Hathaway
patent: 4342335 (1982-08-01), Reinicker et al.
patent: 4777981 (1988-10-01), Petro
patent: 4827982 (1989-05-01), Inagaki
patent: 5184646 (1993-02-01), Hori et al.
patent: 5396266 (1995-03-01), Brimhall
patent: 5638866 (1997-06-01), Mueller
patent: 5743297 (1998-04-01), Mueller
HUSCO International Inc.
Walton George L.
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