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Pressurized fluid recovery/reutilization system

  • US 6,378,301 B2
  • Filed: 06/13/2001
  • Issued: 04/30/2002
  • Est. Priority Date: 09/25/1996
  • Status: Expired due to Fees
First Claim
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1. A pressurized fluid recovery/reutilization system comprising a primary hydraulic pump supplying a pressurized fluid returned from an actuator, a first circuit supplying the returning pressurized fluid from the actuator, a first pump motor connected to said first circuit, a variable displacement type second pump motor mechanically coupled with said first pump motor and connected to a second circuit, a third circuit communicating said first circuit and a discharge passage of said primary hydraulic pump, a pressure accumulator provided in said second circuit, and a reproduction valve switching said third circuit between a state permitting the flow of a pressurized fluid and a state blocking the flow.

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