Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1983-08-30
1985-06-11
Little, Willis
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33365, G01C 924
Patent
active
045219745
ABSTRACT:
A temperature stable apparatus for mounting an arcuate glass enclosed electrolytic bubble gravity sensor utilizes epoxy cement having a low temperature coefficient of expansion for bonding an end face of a post having a temperature coefficient of expansion equal to that of glass to the center of the glass enclosure of the sensor, and the other end of the post to the center of a rectangular aluminum plate, such that the longitudinal axis of the post is orthogonal to the plate and the plane of the arcuate axis of the enclosure, and such that a chord connecting the ends of the arcuate axis is parallel to the longitudinal axis of the plate.
REFERENCES:
patent: 2854762 (1958-10-01), Wright
patent: 3018558 (1962-01-01), Hannan et al.
patent: 3497950 (1970-03-01), Squire et al.
Neis Thomas W.
Swartz Harold L.
Little Willis
Sperry Corporation
Terry Howard P.
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