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Hydraulic operating apparatus

  • US 3,208,221 A
  • Filed: 09/30/1963
  • Issued: 09/28/1965
  • Est. Priority Date: 09/30/1963
  • Status: Expired due to Term
First Claim
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1. HYDRAULIC OPERATING APPARATUS FOR A WHEELED VEHICLE HAVING A MATERIAL HANDLING MEANS THEREON COMPRISING HYDRAULIC DRIVING MEANS FOR DRIVING THE VEHICLE, HYDRAULIC OPERATING MEANS FOR THE MATERIAL HANDLING MEANS, TWO HYDRAULIC PUMPS ON THE VEHICLE, AND CONTROL VALVES CONNECTING THE PUMPS TO THE DRIVING MEANS AND TO THE OPERATING MEANS, THE CONTROL VALVES BEING POSITIONABLE TO EFFECT A FIRST OPERATING CONDITION IN WHICH BOTH PUMPS ARE CONNECTED TO THE DRIVING MEANS TO SUPPLY ACTUATING FLUID THERETO, A SECOND OPERATING CONDITION IN WHICH ONE PUMP IS CONNECTED TO THE DRIVING MEANS AND THE OTHER TO THE OPERATING MEANS, AND A THIRD OPERATING CONDITION IN WHICH BOTH PUMPS ARE CONNECTED TO THE OPERATING MEANS.

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