POSITIONING DEVICE
Patent
·
OSTI ID:4199243
A positioner is described for a vertical reactor-control rod. The positioner comprises four grooved friction rotatable members that engage the control rod on all sides and shift it longitudinally. The four friction members are drivingly interconnected for conjoint rotation and comprise two pairs of coaxial members. The members of each pair are urged toward one another by hydraulic or pneumatic pressure and thus grip the control rod so as to hold it in any position or adjust it. Release of the by-draulic or pneumatic pressure permits springs between the friction members of each pair to force them apart, whereby the control rod moves quickly by gravity into the reactor.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-007111
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 2904168
- OSTI ID:
- 4199243
- Country of Publication:
- United States
- Language:
- English
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