Fastener
OwnerHainbuchner Hermaninventor
Life of this patent
Estimating the term…
Abstract
A fastener for joining heavy walled ferrous or non-ferrous metal workpieces comprising a solid metal cylinder disposed within a circular recess in a workpiece and having one or more bore holes each forming an acute angle with the axis of the cylinder extending through the cylinder from one end face to and through the cylindrical wall adjacent to the other end face receiving and directing a projectile whereby the projectile forms a wedge deforming the adjacent surfaces of the workpiece, cylinder and projectile thereby locking together the projectile, workpiece and cylinder. The cylinder may be provided with a circumferential recess housing a sealing gasket, such as an O-Ring, to provide a pressure type seal between the cylinder and a workpiece.
Claims8
A fastener comprising a solid metal cylinder for use with a workpiece having a cylindrical cavity receiving said cylinder, said cylinder provided with a bore hole forming an acute angle with the axis of said cylinder running through said cylinder from one end face to the cylindrical wall thereof and a spent projectile which has been fired into said bore hole from said end face lodged in said bore hole and having a bulged extension disposed between the cylindrical walls of said cavity and cylinder whereby said walls are deformed to the contour of said bulge.
Dependencies are inferred from the claim text.