Self-actuated displacement transducer

Details Self-actuated displacement transducer Self-actuated displacement transducer

1979-06-07

1981-10-06

Goldberg, Gerald

Geometrical instruments

Area integrators

Electrical

33DIG2, G01B 322

Patent

active

042927404

ABSTRACT:
An LVDT displacement transducer and a probe actuation arrangement integrated into a probe assembly. The probe assembly includes a tubular housing within which is mounted at one end an LVDT and within the other the probe actuation arrangement. In the preferred embodiment, an air pressure actuator arrangement is utilized and comprises a stepped diameter probe extension shaft having a smaller diameter section joined to the LVDT core element, and extending through a bulkhead bushing into a pressure chamber, the larger diameter section of the shaft passing out through the opposite end of the housing and serving to mount the probe sensor contact. The differential diameter of the stepped probe extension shaft is subjected to air pressure via an air fitting communicating with the air chamber and which acts against a return spring to enable self actuation of the probe extension shaft and attached core element. In one alternate version, the stepped probe extension shaft is prevented from rotation for applications requiring a fixed orientation of the probe shaft and includes the provision of a small roller bearing moving within a longitudinal slot formed in the bulkhead bushing. In another embodiment, the probe shaft is extended by a spring rather than air pressure. LVDT transducers of shorter gaging range than the probe displacement are also disclosed, creating either pretravel or overtravel of the probe shaft.

REFERENCES:
patent: 2833046 (1958-05-01), Jeglum
patent: 3216118 (1965-11-01), Pistoles
patent: 3434086 (1969-03-01), Houpt et al.
patent: 4175331 (1979-11-01), Johnson

Affiliated with

Also associated with

Rating

Self-actuated displacement transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-actuated displacement transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-actuated displacement transducer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1200524