Actuator with approach pre-stroke and working stroke for operating a tool
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United States of America Patent
Stats
-
Nov 5, 2002
Grant Date -
N/A
app pub date -
Feb 21, 2001
filing date -
Jul 8, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns an actuator (21) comprising a pre-stroke rod (29) which can be fixed to the tool body, for example soldering pliers. Thus by pressurising the pre-stroke chamber (27) the working rod (34) for closing the pliers can be brought into an intermediate small opening position, the working piston (31) and the amplifying pistons (36 and 37) remaining retracted in the actuator. Since the rod (29) can then be locked relative to the actuator body (21), pressurisation of the working chamber (32) and the amplifying chambers (38 and 40) will then cause the working rod to be extracted (34) and the soldering pliers to be closed without any recoil from the actuator body.
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