Clamping device, in particular a machine vise

Details Clamping device, in particular a machine vise Clamping device, in particular a machine vise

1974-09-09

1976-03-02

Whitehead, Harold D.

Work holders

With fluid means

Cylinder-piston means in series with additional positioning...

269228, B25B 114

Patent

active

039413624

ABSTRACT:
A clamping device having a hollow spindle screwable in a stationary vise part and a pressure rod axially slidable in the hollow spindle for exerting clamping pressure. A mechanical or hydraulic power amplifier is arranged in a cylindrical housing connected to the hollow spindle. The secondary or driven member of the power amplifier acts onto a pressure rod. The primary member of the power amplifier is acted upon by a driving element which itself is arranged in a compressed air cylinder adjoining the power amplifier housing. An additional mechanical or hydraulic power amplifier is arranged in the compressed air cylinder between the compressed air piston and the aforementioned primary member.

REFERENCES:
patent: 2335743 (1943-11-01), Cross
patent: 2443775 (1948-06-01), Olson
patent: 3484094 (1969-12-01), Arnold
patent: 3603579 (1971-09-01), Odom
patent: 3650522 (1972-03-01), Wermuth
patent: 3807721 (1974-04-01), Arnold

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