Vertical indicating method and device

Details Vertical indicating method and device Vertical indicating method and device

1981-06-22

1984-06-05

Little, Willis

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33346, 33391, G01C 908

Patent

active

044519915

ABSTRACT:
A vertical indicating device is comprised of a compound pendulum immersed in a liquid and one or more paddles attached to the pendulum to couple its motion to the liquid. The effective length of the equivalent pendulum is much longer than the physical dimension of the device. The loading on the bearing is minimal, thus, achieving low friction and high accuracy.

REFERENCES:
patent: 689323 (1901-12-01), Quimby
patent: 2924022 (1960-02-01), Callahan
patent: 3520065 (1970-07-01), Pace
patent: 3945128 (1976-03-01), Weiss
patent: 3975831 (1976-08-01), Jysky et al.
patent: 4096638 (1978-01-01), Schimming
patent: 4163325 (1979-08-01), Hughes

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