Method of closing the end of a drilled passage

Metal working – Method of mechanical manufacture – Converting

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Details

29509, 29520, 29525, 138 89, 219117R, 220359, 220362, 228135, B22D 1910, B23P 700

Patent

active

039523950

ABSTRACT:
The invention is designed to produce a more economical means of closing drilled passage holes in hydraulic and/or pneumatic systems either during manufacture and/or repair. The process involves pressing a ball, or diametral portion thereof, with a diametral interference fit, and of similar material as the parent part to be sealed, into the drilled hole causing a seal of the hole by relying on the curvature of the surface of the ball or plug to plastically deform and maintain a depressional diametral seal within the elastic limits of the seal and the parent material for sealing, and then crimping the parent material to be sealed over the end of the ball or plug to maintain it in position against pressure blow out. Alternate methods of holding the ball in position might include a line spot fusing utilizing a current passing through the ball to make the bond permanent, or a ring furnace fusing and/or other such fusing and partial staking procedures to bond the ball in place as an integral part of the unit.

REFERENCES:
patent: 1928443 (1933-09-01), Archer et al.
patent: 2138404 (1938-11-01), Haas
patent: 2506765 (1950-05-01), Bach
patent: 3059627 (1962-10-01), Dadd
patent: 3243073 (1966-03-01), Gibson
patent: 3350768 (1967-11-01), Meylan et al.
patent: 3762778 (1973-10-01), Boggs et al.
patent: 3825146 (1974-07-01), Hirmann

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