Device and process for fixing two parts with a captive screw

Details Device and process for fixing two parts with a captive screw Device and process for fixing two parts with a captive screw

1984-10-29

1987-07-21

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having structure to restrict rotation of threaded, mating...

Comprising a thread lock

411 21, 411348, 4119413, F16B 3922

Patent

active

046814957

ABSTRACT:
A device and process for fixing two parts with a captive screw (5) engaged in a threaded hole (3) machined in at least one of the two parts (1,2). The screw (5) comprises over its whole length a bore (6) communicating with at least one radially directed hole (10) opening out on the outer side surface of the screw (5) in its threaded part (5a) and enclosing a component (11) movable in the hole (10). A maneuvering rod (14) is engaged in the bore (6) for locking the screw (5) in place in the threaded hole (3), by placing a part of the rod with larger diameter to coincide with the component (11) which then crushes the threading of the part (3a) of the hole (3). The rod (14) is crimped over the screw (5) by virtue of strips (18). The disclosure applies in particular to the assembly of two walls of a partitioning of the core of a pressurized water nuclear reactor.

REFERENCES:
patent: 3180390 (1965-04-01), Ockert, Jr.
patent: 4507034 (1985-03-01), Lew et al.

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