Positioning drive for absorber rods of a nuclear reactor

Details Positioning drive for absorber rods of a nuclear reactor Positioning drive for absorber rods of a nuclear reactor

1975-12-11

1977-11-29

Pendegrass, Verlin R.

176 86R, G21C 708

Patent

active

040604527

ABSTRACT:
The invention concerns a positioning drive for absorber rods of a nuclear reactor, of a threaded spindle and traveling nut type. In this positioning drive, rollers are provided the nut, which engage with the threads of the spindle and have an axis extending essentially at right angles to the longitudinal axis of the spindle. Three of the rollers are preferably combined in a traveling-nut housing, by means of anti-friction bearing elements. The positioning speed of such mechanical spindle drives can be increased thereby substantially. The invention is of interest particularly for boiling-water reactors.

REFERENCES:
patent: 2780740 (1957-03-01), Roman et al.
patent: 2841026 (1958-07-01), Glass
patent: 2937984 (1960-05-01), Chapellier
patent: 3031388 (1962-04-01), Barchet
patent: 3050943 (1962-08-01), Thorel et al.
patent: 3088902 (1963-05-01), Kumpf

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