Parallel motion displacement transducers

Details Parallel motion displacement transducers Parallel motion displacement transducers

1982-05-06

1985-03-12

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

G01B 702

Patent

active

045036160

ABSTRACT:
In a parallel motion finger probe, the parallel motion arm is rigidly connected to a shaft which is supported in a linear ball sleeve bearing, instead of by a parallel motion linkage as in prior finger probes. The parallel motion arm can be biassed in either of its two opposite directions of movement by a leaf spring, whose biassing force and direction can be adjusted by a control wheel having an eccentric groove co-operating with a pin on a spring control arm to which the spring is connected. The leaf spring also serves to prevent rotation of the parallel motion arm about the axis of the bearing. Displacement of the parallel motion arm is sensed by an inductive displacement transducer of the LVDT type.

REFERENCES:
patent: 3122838 (1964-03-01), Uhlig
patent: 3180030 (1965-04-01), Witzke
patent: 3781997 (1974-01-01), Pagella et al.
patent: 3946492 (1976-03-01), Dubose

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