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AU3400778A
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Hydraulic extraction ofa mineral seam
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AU3400878A
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Subterrainean hydraulic mining
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DE2808114A1
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Hydraulic mineral extraction for mine - has slurry disposed through adjacent parallel driven sectors with through cuts
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DE2808113A1
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Hydraulic mining machine for sloping sections - has bed sections divided into blocks spaced to prevent interacting pressure
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AU3332078A
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Gate valve having an upstream bevelled edge gate member
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DE2804595A1
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Pipe fluid flow cut=off valve - has tapered surface providing throttle between housing and seals with pipes connected
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AU1319376A
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Two stage centrifugal pump with interstage seal
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DE2616774A1
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Two stage centrifugal pump - has floating set of sealing rings between stages fitted on shaft
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AU1103076A
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Split casing pump
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AU8675775A
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Centrifugal pump
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DE2550034A1
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Two stage centrifugal pump - has impellers wedged between opposite cones on shaft and shaft sleeve under axial impeller force
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GB1276629A
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Device for producing liquid pressure pulses or jets
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GB1281187A
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A device for imparting high pressure pulses to a liquid
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GB1245352A
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Device for building-up hydraulic pressure pulses
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