Process and apparatus for closing one end of a tubular bar

Details Process and apparatus for closing one end of a tubular bar Process and apparatus for closing one end of a tubular bar

1987-09-23

1989-09-19

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29433, 29241, 53319, 53489, 226 97, 2541344, B21D 3903, B23P 1900

Patent

active

048668320

ABSTRACT:
A process is described in which a tubular bar (27) which is substantially but not entirely filled with flowable solids (28), is closed at one end. To close the tubular bar (27) at its end, a thread (3) is introduced into the tubular bar (27) and is caused to form a ball of thread therein. The thread (3) is preferably introduced into the tubular bar by being blown through a hollow needle (11).

REFERENCES:
patent: 2622306 (1952-12-01), Anderson
patent: 2814172 (1957-11-01), Tommaney
patent: 2971243 (1961-02-01), Burns
patent: 3079673 (1963-03-01), Loehlein et al.
patent: 3485428 (1969-12-01), Jackson
patent: 3941173 (1975-10-01), Sprague, Jr.
patent: 4001929 (1977-01-01), Ishikawa
patent: 4691486 (1987-09-01), Niekrasz

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