Retaining device with metal insert

Tools – Wrench – screwdriver – or driver therefor – Handle or shank

Patent

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Details

403324, 403378, B25B 2316

Patent

active

060764368

ABSTRACT:
The invention is a retaining device to secure a socket to an anvil of a pneumatic air gun. The retaining device comprises an O-ring, a projection, and a metal insert attached to the projection. The O-ring has a diameter and defines a plane. The projection extends inwardly from the O-ring along the plane of the O-ring. The metal insert comprises a near portion, a shoulder portion, and a far portion. The diameter of the near portion is greater than the diameter of the far portion. The far portion, the shoulder portion, and the shear-resistant portion of the near portion all have a solid metal core. The near portion has a hollow core extending from the solid core to a near end of the metal insert. The near portion has at least one aperture opening from the hollow core to the outside surface of the metal tip, and an external annular groove intersecting the aperture. The projection has a predetermined length being less than half the diameter of the O-ring such that the projection and the near portion of the metal insert are disposed in a first bore of the socket, the shoulder portion of the metal insert is disposed in a chamfer portion of a first end of the through-hole of the anvil, and the far portion of the metal insert extends through the first juxtaposition defined by the alignment of the first bore of the socket and the first end of the through-hole of the anvil.

REFERENCES:
patent: 1265341 (1918-05-01), Keller
patent: 2110397 (1938-03-01), Kangas
patent: 2304038 (1942-12-01), Thompson
patent: 2837381 (1958-06-01), Sarlandt
patent: 3549160 (1970-12-01), Etzkorn
patent: 4266453 (1981-05-01), Farley
patent: 4583430 (1986-04-01), Farley
patent: 4627761 (1986-12-01), Olson et al.
patent: 4932293 (1990-06-01), Goff

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