Method and apparatus for monitoring physical positioning of a us

Details Method and apparatus for monitoring physical positioning of a us Method and apparatus for monitoring physical positioning of a us

1990-10-05

1993-01-12

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

G01C 906

Patent

active

051778726

ABSTRACT:
There is disclosed a device and method for providing signals representative of the positional altitude of a user. The device is responsive to hand or head movements to move a dampened substance contained within a confined tube past one or more sensors. Light passing through the tube is interrupted by the movement of the dampened substance which can be a liquid or a solid object within a viscous liquid.

REFERENCES:
patent: 3184861 (1965-05-01), Conrad
patent: 3478437 (1969-11-01), Cothran
patent: 3713338 (1973-01-01), Kind
patent: 4154000 (1979-05-01), Kramer
patent: 4779353 (1988-10-01), Lopes et al.
patent: 4861981 (1989-08-01), Winiger

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