Method of frictionally bonding a liner to an outer tube of a wea

Details Method of frictionally bonding a liner to an outer tube of a wea Method of frictionally bonding a liner to an outer tube of a wea

1999-02-08

2000-12-12

Johnson, Stephen M.

Firearms

Barrels

Materials or coatings

89 16, 29 111, F41A 2104

Patent

active

061581585

ABSTRACT:
A method of frictionally bonding a liner to a length portion of an outer tube of a weapon barrel includes the following steps: Cooling the liner to a temperature of less than -50.degree. C.; heating the length portion of the outer tube to a temperature such that the inner diameter of the outer tube becomes greater than the outer diameter of the liner; introducing the liner into the outer tube while maintaining the temperature of the outer tube constant; and discontinuing the heating of the outer tube and cooling the outer tube such that shrinkage of the outer tube onto the liner first occurs along a central length portion of the liner, followed, after a predetermined period, by a shrinkage of the outer tube onto the liner along terminal length portions of the liner which flank its central length portion.

REFERENCES:
patent: 1514166 (1924-11-01), Morgan et al.
patent: 5214234 (1993-05-01), Divecha et al.

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