Radiant energy – Means to align or position an object relative to a source or...
Patent
1981-12-09
1984-03-13
Smith, Alfred E.
Radiant energy
Means to align or position an object relative to a source or...
250308, 248662, G12B 500, G12B 908, G01D 1100, G01N 23203
Patent
active
044370121
ABSTRACT:
Device for bringing about the coincidence between the axis of a measuring probe and a normal to the surface of a part to be controlled and application to the measurement of thicknesses of thin layers.
Thus, device (5) forms part of probe (4) on a measuring apparatus comprising means for positioning part (3) and which is constituted by at least one probe translating member (25) making it possible to vary its distance from the part, sensing means (53) integral with the probe for controlling the achievement of coincidence, means (43) for rotating about the axis Y'Y making it possible to give probe axis (A) a direction close to that of normal (N) and means for oscillating probe axis (A) about the said direction in order to achieve the coincidence.
REFERENCES:
patent: 1117917 (1914-11-01), Schoenky
patent: 3099934 (1963-08-01), Park
patent: 3417949 (1968-12-01), Waber
patent: 3483375 (1969-12-01), Joffe et al.
patent: 3714436 (1973-01-01), Fischer
Freeland Model L Air Comparator Gages, Freeland Gauge Company, Jan. 31, 1958.
Cavy Claude
Rolland Marie L.
Berman Jack I.
Commissariat a l''Energie Atomique
Nilles James E.
Smith Alfred E.
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