Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Oppositely acting double wedge expander means
Patent
1992-02-28
1993-11-23
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Oppositely acting double wedge expander means
411 21, 403370, F16B 1304
Patent
active
052638022
ABSTRACT:
A pin (101) for alignment of two elements (1, 3) each comprising at least one orifice (2, 4) to be positioned coaxially with each other, the first element (1) being stationary and the second element (3) being radially displaceable. The alignment pin comprises a cage (11) having a diameter smaller than the diameter of the orifices (2, 4) of the two elements (1, 3) and intended to be placed in these orifices (2, 4). The cage (11) comprises radial expansion blocks (13) for centering the pin (10) in the orifice (2) of the first stationary element (1) forming a reference and for displacement of the second element (3) in relation to the first element (1). The pin is used for centering a cover on a nuclear reactor vessel.
REFERENCES:
patent: 1021794 (1912-04-01), Pleister
patent: 2719747 (1955-10-01), Layne
patent: 3014399 (1961-12-01), Schaffner
patent: 3561798 (1971-02-01), Redfern
patent: 4089613 (1978-05-01), Babbitt, Jr.
patent: 4270434 (1981-06-01), Bucheli
patent: 4501520 (1985-02-01), Bergner
patent: 4673320 (1987-06-01), Froehlich
Fichot Philippe
Roinjard Jean-Pierre
Framatome
Lindsey Rodney M.
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