Assembly for securing a centering pin within a bore of a nuclear

Details Assembly for securing a centering pin within a bore of a nuclear Assembly for securing a centering pin within a bore of a nuclear

1991-11-05

1993-05-18

Echols, P. W.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Circulating fluid within reactor

29723, 29243518, 292835, G21C 506

Patent

active

052119076

ABSTRACT:
A method and assembly for securing a cylindrical centering pin in a bore formed in a plate includes introducing an end of a centering pin to be secured to a plate into a bore formed in the plate until at least part of a coaxial, radially deformable wall portion of the end to be secured protrudes beyond the plate; and generating pressure in a closed hollow space surrounded by the wall portion with a pressure fluid until the wall portion radially expands and anchors the centering pin. According to another method and assembly, the end is introduced into the bore until at least part of the end to be secured, which has a periphery and an interior with radial slits formed therein, protrudes beyond the plate; and a mandrel-like tool is partially brought into the slits in the interior of the end of the centering pin and radially expands the end of the centering pin with the tool for anchoring the centering pin.

REFERENCES:
patent: 2246888 (1941-06-01), Messenger
patent: 2640618 (1953-06-01), Hale, Jr.
patent: 2843861 (1958-07-01), Gandy
patent: 2877682 (1959-03-01), Barry et al.
patent: 3198058 (1965-08-01), Barry
patent: 3345730 (1967-10-01), Laverty
patent: 4182152 (1980-01-01), Vaill et al.
patent: 4663119 (1987-05-01), Kerrey

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