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Suspension system for heavy vehicles

  • US 3,330,578 A
  • Filed: 09/21/1965
  • Issued: 07/11/1967
  • Est. Priority Date: 09/21/1965
  • Status: Expired due to Term
First Claim
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1. IN A TRUCK HAVING A BODY AND A TRACTOR UNIT, A KINGPIN BETWEEN THE BODY AND TRACTOR CONSISTING OF TELESCOPING PARTS CONTAINING LIQUID UNDER COMPRESSION SUSTAINING WEIGHT OF THE BODY AND LOAD THEREIN, SAID TRACTOR HAVING A SUSPENSION SYSTEM INCLUDING STRUTS OF THE TELESCOPING GAS CHAMBER TYPE, PRESSURE ACTUATED VALVE MEANS OPERABLE IN RESPONSE TO A PREDETERMINED RISE IN THE KINGPIN LIQUID PRESSURE TO DIRECT ADDITIONAL GAS TO THE STRUTS.

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