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Eye exerciser
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Apparatus for governing movement of hand controlled power transmission
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Viscosity compensating device
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Hydraulic power transmission and control
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Bomb release mechanism
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Apparatus for controlling the movement of heavy masses
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Hydraulic hoisting unit and control system therefor
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Cartridge plug
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Method of making valve casings
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Hydraulic hoisting unit and control system therefor
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Hydraulic steering mechanism
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Variable volume pump
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Combined rapid traverse and slow traverse hydraulic system
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Apparatus for handling material
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Control for heat-treating apparatus
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Balanced gear pump or motor
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Liquid relief valve
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Vacuum system for hydraulically operated mechanisms
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Vane type pump
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Hydraulic steering gear
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