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US 10,294,976 B2Granted
Method of installing a structural blind fastener
AssigneeThe Boeing Company
InventorsJeffry G. Bickford, Mark A. Woods, Peter A. Coronado, Richard Whitlock
Life of this patent
Estimating the term…
Abstract
A two-piece, one-sided-installation fastener system may have an internally-threaded sleeve having a shank and a sleeve head. The fastener system may include an externally-threaded core bolt having a frangible driving provision and a core bolt head.
Claims18
A method of installing a two-piece, one-sided-installation fastener system, comprising:
- inserting a core bolt and a sleeve into a hole of a structure having a front side and a back side, the core bolt having a frangible driving provision coupled to a core bolt head;
- translating the core bolt backward away from the front side of the hole without rotating the core bolt relative to the sleeve;
- buckling a softened portion of the sleeve to form a single buckled sleeve portion;
- flattening the buckled sleeve portion against the back side of the hole;
- and
- rotating the core bolt relative to the sleeve to apply tension in the fastener system independent of translating the core bolt backward away from the front side of the hole.
3 more elements
A method of installing a two-piece, one-sided-installation fastener system, comprising:
- inserting a core bolt and a sleeve into a hole of a structure having a front side and a back side, the core bolt having a frangible driving provision coupled to a core bolt head, the sleeve having a sleeve head;
- axially pulling on the frangible driving provision;
- translating the core bolt backward away from the front side of the hole without rotating the core bolt relative to the sleeve and while maintaining the sleeve head against the structure;
- buckling a softened portion of the sleeve against the back side of the structure to form a single buckled sleeve portion;
- flattening the single buckled sleeve portion against the back side of the hole;
- and
- rotating the core bolt relative to the sleeve to apply tension to the fastener system without axially translating the core bolt relative to the sleeve.
4 more elements
Dependencies are inferred from the claim text.