Device for generating a reciprocating movement, valve...

Valves and valve actuation – Serial alternately closed ports

Reexamination Certificate

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Details

C251S318000, C173S017000, C173S206000

Reexamination Certificate

active

07051995

ABSTRACT:
A pressure-fluid driven device for generating a reciprocating movement includes a first (5) and a second relatively movable part (3), wherein a working chamber (7) is intended to be alternatively pressurised and depressurised so as to drive the parts in a movement relative to each other when the working chamber is pressurised. A valve arrangement (8) is intended to control the fluid flow into as well as from the working chamber. The inlet into the working chamber (7) is separate from the discharge from the working chamber (7). The invention also concerns a valve arrangement and a pneumatic tool.

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patent: 5137436 (1992-08-01), Vogel
patent: 5899232 (1999-05-01), Cardoso et al.
patent: 6341761 (2002-01-01), Brunner et al.

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