Radiant energy – Inspection of solids or liquids by charged particles – Analyte supports
Patent
1975-11-06
1976-08-24
Church, Craig E.
Radiant energy
Inspection of solids or liquids by charged particles
Analyte supports
250468, G03B 4116
Patent
active
039768864
ABSTRACT:
In order to impart to film-screens assemblies homothetic relative sliding with respect to each other which are required for obtaining six tomographic sections, the upper film-screen assembly support is coupled to a driving spring whose end is connected to a transmission leading to the input member of a regulating device. The latter is constituted by two single-acting jacks whose chambers intercommunicate, in the direction of the travel for operation of the apparatus, through an adjustable constriction and, in the return direction, through a check-valve. In the armed position, the rod of one of the jacks, is retained by a locking device. The travel of the film-screens assemblies corresponding to the tomographic sweep, is initiated by the emission of X-rays through the electromagnet. The return travel, which places the apparatus in the armed position, is ensured by means of a key constituting a winding means. The constant speed of displacement of the films is regulated by a knob and a selector knob regulates the symmetry.
REFERENCES:
patent: 3291983 (1966-12-01), Landau
Adams Bruce L.
Burns Robert E.
Church Craig E.
Lobato Emmanuel J.
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