Patent ID: 7597517
Filing Date: 2009-10-06
Classification: F16B,Y10T

Abstract:
1. In combination, a swage fastening system for an assembly of workpieces, comprising: a pin, the pin having an enlarged head, a relatively unthreaded, ungrooved section, and a section with threads; a generally cylindrical one-piece swage collar swaged over the section with threads of the pin, the swage collar having a cylindrical main body portion with an external surface and a main central bore, a smaller diameter outside edge and a larger diameter base portion flaring smoothly outwardly from the main cylindrical body portion to form a concave rounded shoulder in the external surface of the swage collar, said base portion having an internal shoulder formed in the main central bore so as to form a seal receiving guide, the internal shoulder having a diameter that is larger than the diameter of the section with threads, the internal shoulder having a surface defining a continuous annular well, and the base portion having a continuous, annular flat even surface adapted to contact said assembly of workpieces; a sealing ring having an external diameter no larger than the diameter of the internal shoulder of the base portion of the swage collar, so as to be disposed entirely within the continuous annular well of the internal shoulder and receiving the pin; and a swaging tool assembly including a swage tool received in and engaged with an anvil, said swage tool having an entrance aperture at one end of said swage tool having an inside diameter slightly larger than said smaller diameter outside edge of said swage collar, and said swage tool having an interior bore which necks down smoothly to a relatively narrow convex rounded surface engaging said external surface of said cylindrical main body portion of said swage collar and said concave rounded shoulder in the external surface of the swage collar, said anvil having a top end and a bottom end, whereby said swage tool mechanically forces the swage collar over the pin affixing a workpiece between the enlarged head and the swage collar with the sealing ring flush with the base portion when installed on said workpiece, tightly sealing the sealing ring entirely within the continuous annular well of the internal shoulder of the swage collar between the internal shoulder of the swage collar and the shaft of the fastener in engagement with the pin and deforming and forming a fluid impermeable seal, said swage tool including an outer nut rotatably engaged with said anvil, and an outer sleeve threadably engaged with said nut, said outer sleeve provided over said outer nut and extending to the bottom end of said anvil and said swage tool collar entrance aperture at said one end of said swage tool, and said anvil being disposed within said outer sleeve.