Level controller

Details Level controller Level controller

1996-08-20

1998-10-20

Will, Thomas B.

Geometrical instruments

Miscellaneous

Light direction

33366, 33391, G01C 906

Patent

active

058228705

ABSTRACT:
A level controller including a base plate having an upright support, a platform supported on and turned about the upright support, a status detector mounted on the bottom side of the platform to detect the position of the platform through an X-axis detector unit and a Y-axis detector unit and to provide an output signal corresponding to the result of the detection, a X-axis motor and a Y-axis motor arranged on the base plate at right angles, and a microprocessor controlled by the X-axis detector unit and Y-axis detector unit of the status detector to turn the X-axis motor and the Y-axis motor in keeping the platform on an even horizontal plane.

REFERENCES:
patent: 824525 (1906-06-01), Bonney
patent: 3206151 (1965-09-01), Lillestrand
patent: 3836162 (1974-09-01), Felkner
patent: 4159577 (1979-07-01), Bergkvist
patent: 4265027 (1981-05-01), Burniski
patent: 4277895 (1981-07-01), Wiklund
patent: 4492029 (1985-01-01), Tanaka et al.
patent: 4533830 (1985-08-01), Beauprey
patent: 4866380 (1989-09-01), Meins et al.
patent: 4922620 (1990-05-01), Terragni
patent: 5366196 (1994-11-01), Mitschelen et al.

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