The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1987
Filed:
Oct. 29, 1984
Gerard Crespin, Villeurbanne, FR;
Jean Coussau, Paris, FR;
Framatome & Cie, Courbevoie, FR;
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.