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:
Feb. 21, 2017
Filed:
Nov. 06, 2013
Lisi Aerospace, Paris, FR;
Florent Verdier, Rueil Malmaison, FR;
Benoit Regnard, St Germain de la Grange, FR;
LISI AEROSPACE, Paris, FR;
Abstract
The present invention pertains to a washer () for a female fastener (A), particularly a nut or collar, said washer comprising an annular base () and a substantially cylindrical skirt () of an outer periphery of the annular base, said annular base comprising a central orifice () coaxial with the axis () of the skirt, characterized in that the annular base is at least partially covered with a layer () of a viscous composition capable of forming a liquid-tight coating through polymerization. When installing a nut having such a washer onto a male fastener such as a pin (), the spreading of the viscous layer makes it possible to fill in the gaps () of the assembly, the polymerization of the composition ensuring its leak-tightness afterwards.