Sensitive inclinometer

Details Sensitive inclinometer Sensitive inclinometer

1977-03-28

1978-07-25

Phillips, Charles E.

Geometrical instruments

Indicator of direction of force traversing natural media

With damper or governor for sensor

33391, G01C 912

Patent

active

041020553

ABSTRACT:
The angular deflection or tilt angle from vertical is determined by an inclinometer wherein a weight is offset and hung from a rotatable shaft to which a needle pointer is affixed. When the inclinometer is oriented such that the shaft is vertically aligned, the gravitational force on the weight is in a direction parallel to the shaft's axis and no torque results. When so oriented, a magnetic spring system holds the shaft in a reference position and the needle points to the center of a graduated scale, thereby indicating a zero tilt angle. If the inclinometer, and consequently the shaft, are tilted in a tilt plane, defined by the shaft and the center of the scale, the weight exerts a torque on the shaft and causes pivoting of the needle away from the center of the scale to indicate the direction of tilt and the magnitude of the tilt angle.

REFERENCES:
patent: 2572766 (1951-10-01), Rylsky
patent: 2598552 (1952-05-01), Jansen
patent: 3520065 (1970-07-01), Pace
patent: 3731938 (1973-05-01), Wren

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