Electric heating – Metal heating – Cutting or disintegrating
Patent
1988-06-07
1989-09-26
Pellinen, A. D.
Electric heating
Metal heating
Cutting or disintegrating
279 4, B23H 104, B23B 3130
Patent
active
048702420
ABSTRACT:
An apparatus for displacing a pressure creating piston in a hydraulic chuck. A toggle clamp having a handle is attached to the hydraulic chuck above the pressure piston by a mounting assembly. An adjustable plunger extension mounted on a plunger is movable by the toggle clamp to displace the piston when the clamp handle is pivoted to move the plunger extension to an extended position. By adjusting the extended position of the plunger extension relative to the plunger, the piston displacement can be preselected, and create a predetermined hydraulic pressure for operating the hydraulic chuck which is maintained despite repetitive movement of the plunger between an extended and a retracted position.
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Evans Geoffrey S.
Pellinen A. D.
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