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  • [发明专利]USD3730638 _ HITACHI LTD,JA 1971年12月16日
    A speed governor system for a hydraulic or pumper turbine being fed water from a penstock for controlling the output of the turbine under varying load conditions. When the load of a generator coupled to the turbine is abruptly cut off, the governor sy...
  • [发明专利]USD3780621 _ ATLAS COPCO AB,SW 1971年06月07日
    A percussion tool has a hammer piston forming with the cylinder a rear and a forward variable volume work chamber which are alternately pressurized. A fluid accumulator is connected to the rear work chamber and it is loaded by a spring device which is...
  • [发明专利]USD3741693 _ FORD MOTOR CO,US 1971年10月07日
    A reversely drivable double gear fluid motor adaptable for use in a vehicle power steering system in which linear displacement of one of the gears in a direction perpendicular to its axis of rotation within the gear chamber determines the direction of...
  • [发明专利]USD3707169 _ EISENWERK WERERHUTTE AG. 1971年03月31日
    The invention relates to a valve having low flow resistance. The valve is hydrostatically balanced with a pressure field located eccentrically opposite a kidney-shaped control slot in a valve disc.
  • [发明专利]USD3752395 _ ASHIKIAN B,CA 1971年06月28日
    A wind motor supplies mechanical energy to operate a mechanohydrothermal energy conversion system, the resulting heat being stored in a liquid and used as needed.
  • [发明专利]USD3686857 _ TEXAS INSTRUMENTS INC. 1971年08月03日
    A thermal actuator including a casing having an opening at one end and a chamber substantially filled with a thermally expandable medium supported within the casing. The chamber includes a neck portion defining an open-ended bore in axial registry wit...
  • [发明专利]US19710170583 _ FRANCAISE DE RAFFINAGE CO,FR 1971年08月10日
  • [发明专利]USD3740565 _ ADAMS B,US 1971年04月26日
    Herein described is an air driven generator for providing electrical energy for charging storage batteries. A plurality of rotors including a round rim, a hub and connecting vanes are alternately interdisposed upon a fixed shaft between a plurality of...
  • [发明专利]US19710108089 _ RUMSEY, ROLLIN DOUGLAS 1971年01月20日
    Radial piston pump or motor has within its housing a stationary pintle valve, an external shaft connected to a rotating spider of which are mounted pressure balanced pivotal cylinders. Rigid piston - shoe assemblies engage the cylinders and ride on a ...
  • [发明专利]USD3708241 _ HOLLYMATIC CORP,US 1971年08月09日
    A pressurized fluid engine operable at high efficiency and in which pressure fluid flows therethrough with low pressure and fluid losses, having a pressure fluid passage to a rotor which has a hollow confined interior bounded on substantially its enti...
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