Title: Clamping device, in particular a machine vise

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.

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Inventors: Arnold, Franz (Kempten, DT)
Preisenhammer, Peter (Kempten-Lenzfried, DT)

Application Number: 504533
Filing Date: 1974-09-09
Publication_date: 1976-03-02
Assignee: Saurer-Allma GmbH, Allgaeuer Maschinenbau (Kempten, DT)
Primary Class(es): 269/32 269/228
Other Classes:
US Patent Ref:

2335743	Nov, 1943	Cross	269/32.
2443775	Jun, 1948	Olson	269/32.
3484094	Dec, 1969	Arnold	269/32.
3603579	Sep, 1971	Odom	269/32.
3650522	Mar, 1972	Wermuth	269/228.
3807721	Apr, 1974	Arnold	269/228.

Other Refs: 1,900,835

Oct, 1970	DT

Primary Examiner: Whitehead, Harold D.
Assistant Examiner: Watson, Robert C.
Attorney: Woodhams, Blanchard and Flynn