Herbert Heitkamp

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Cutter drive regulation apparatus for a tunnelling machine

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine
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Drive shield for tunneling apparatus and a method for operating

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Hydraulic control means

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
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Hydraulic control means

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
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Hydraulic control means for pipe thrust-jacking apparatus

Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Second path activated in response to pressure or flow in...
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Profile ID: LFUS-PAI-P-446338

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