Radiant energy – Inspection of solids or liquids by charged particles – Electron probe type
Patent
1982-08-05
1984-07-31
Anderson, Bruce C.
Radiant energy
Inspection of solids or liquids by charged particles
Electron probe type
2505051, 378161, G01N 2300
Patent
active
044632576
ABSTRACT:
A mechanism is disclosed for selectively aligning one of two different radiation passing windows with the channel of a measuring device. The measuring device includes an elongated tubular probe having a channel formed therein. A spherical cap, having a diameter less than the diameter of the probe, is mounted to the end of the probe, and is rotatable between a first and second position. A pair of windows are mounted in the cap in a manner such that when the cap is oriented in the first position, the first window is aligned with the channel, and when the cap is oriented in the second position, the second window is oriented with the channel. In the preferred embodiment, an outer tubular member is mounted around the probe and includes axially projecting teeth which engage with a spur gear connected to the rotatable cap. The rotation of the outer tubular member relative to the probe drives the spur gear for rotating the cap.
REFERENCES:
patent: 3319064 (1967-05-01), Guernet et al.
patent: 3864570 (1975-02-01), Zingaro
patent: 4107562 (1978-08-01), Koller et al.
Drummond William E.
Simpkins Gideon M.
Anderson Bruce C.
Tracor Xray Inc.
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