Geometrical instruments – Area integrators – Electrical
Patent
1984-05-14
1986-02-25
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
33147K, 33172E, G01B 512, G01B 712, G01B 326
Patent
active
045718393
ABSTRACT:
A bore gauge incorporates one or more electromagnetic transducers housed in a shroud which in use is inserted into the bore to be gauged. Each transducer comprises a coil and a core movable within the coil. In one embodiment the coil and the core of a single transducer are mounted on opposite limbs of a flexible fork-like structure, the two limbs carrying gauging contacts for engagement with the walls of the bore. In other embodiments, incorporating a plurality of transducers, coils are rigidly mounted within the shroud and cores are mounted on flexible limbs set in slots in the surface of the shroud.
REFERENCES:
patent: 2583791 (1952-01-01), Neff
patent: 2795855 (1957-06-01), Worthen
patent: 2853789 (1958-09-01), Pistoles
patent: 3103748 (1963-09-01), Emery
patent: 3808696 (1974-05-01), Possati
patent: 3882604 (1975-05-01), Macklyn
patent: 4030202 (1977-06-01), Fadl et al.
patent: 4290204 (1981-09-01), Possati
patent: 4339879 (1982-07-01), Selleri
patent: 4348814 (1982-09-01), Possati et al.
Haroian Harry N.
System E Controls Limited
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