Torque Balancer

Details Torque Balancer Torque Balancer

1990-12-18

1993-10-19

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

G01P 1513

Patent

active

052535274

ABSTRACT:
A torque balancer used in inclinometers, angular accelerometers or the like includes a magnet, a yoke, a movable coil, a weight, a relative declination detector and a feedback apparatus to hold the movable coil always in a reference position. The magnet is generally bar-shaped, and a magnetic field gap defined by a pole surface of the magnet and the opposed yoke is so defined that the size in the rotational direction of the movable coil is larger by a small amount than the size of the movable coil in its rotational direction. This small amount is selected to ensure that the movable coil does not fail to be located in the magnetic field gap even when it is moved to a maximum declined position detectable by the relative declination detector. A torsion band supporting the movable coil is fit on a pin extending in parallel orientation with a line connecting the pivotal center of the movable coil and the center of the weight.

REFERENCES:
patent: 3618402 (1971-11-01), Kase
patent: 4088027 (1978-05-01), Hernandez et al.
patent: 4555946 (1985-12-01), Capaldi et al.

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