Wire joining device
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United States of America Patent
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-
Feb 8, 1994
Grant Date -
N/A
app pub date -
Apr 14, 1992
filing date -
Apr 14, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulic wire joining device for connecting at least two wires. The device includes a hydraulic cylinder for clamping a wedge or spacer over at least two wires, and a work fixture for transmitting an cylinder force to the wedge. The cylinder is a two-stage type of cylinder, which has first and second coaxial cylinders and respective first and second coaxial pistons respectively forming the first and second chambers and third and fourth chambers. The first piston has passage means which has a pressure valve and which connects the first and third chambers upon opening of the pressure valve only at a second stage higher fluid pressure level, whereby a two-stage two-level force can be applied to the wedge for initial crimping and final crimping of the wedge.
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