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:
Jan. 28, 2020
Filed:
Sep. 29, 2015
Lisi Aerospace, Paris, FR;
Laurent Bourges, Rancho Palos Verdes, CA (US);
Johan Stephan, Houilles, FR;
Christophe Van Daele, Conflans Sainte Honorine, FR;
LISI AEROSPACE, Paris, FR;
Abstract
The invention relates to a metallic fastener () for the interference fit assembly of at least two structural elements () comprising a through hole, the fastener comprising an enlarged head (), a shaft () having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (). Before installation, at least the conductive surface () is coated with a lubricating layer (), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener. The invention further relates to a method for obtaining such a fastener and to a method for installing such a fastener in a structure. The invention is applicable to the assembly of aircraft structures.