Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1990-06-27
1991-03-26
Eley, Timothy V.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291162, 29122, B21B 3130
Patent
active
050018205
ABSTRACT:
Axially extending liquid-tight tapered spaces are defined in the barrel of a roll body. Tapered pistons are fitted in the spaces for engagement and disengagement with a bore inner surface defining the tapered spaces. A liquid under pressure is supplied through liquid passages to some of liquid pressure chambers at opposite ends of the tapered pistons so that the barrel of the roll body is increased or decreased in diameter. When the rolling forces are removed from the roll body, the roll body returns to its initial straight state.
REFERENCES:
patent: 4599770 (1986-07-01), Kato
patent: 4602408 (1986-07-01), Noe et al.
patent: 4837906 (1989-06-01), Mori et al.
Imai Isao
Kato Heiji
Nitanda Masao
Oyauchi Tsukasa
Yoshida Masujiro
Eley Timothy V.
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
Martin R.
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