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US 4,904,109 AGranted
Interlocking structural members employing transverse locking wedges
AssigneeGrumman Aerospace Corporation
InventorRobert E. Anderson
Life of this patent
Estimating the term…
Abstract
The invention relates to an expansion fastener device that secures two interlocking members together. The device includes a parallelepiped receptacle having slits along opposite ends. The receptacle is inserted through the interlocking members and wedges are driven into the receptacle to cause its expansion in horizontal and vertical directions. This secures the members together along relatively large shear areas thereby decreasing the possibility of shear damage to the members.
Claims3
An expansion fastener comprising:
- a hollow parallelepiped receptacle having
- (a) a central section having slitted open ends to permit expansion of the ends in the horizontal and vertical directions;
- a wedge having a rectangular cross section inserted into each end to force expansion thereof, each wedge having
- (a) tapered surfaces for contacting mating tapered surfaces formed inwardly of the receptacle ends;
- (b) ridges formed on the tapered surfaces of the wedge for engaging mating ridges on the receptacle tapered surfaces.
2 more elements
Dependencies are inferred from the claim text.