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CONTROL APPARATUS

  • US 3,580,139 A
  • Filed: 04/03/1969
  • Issued: 05/25/1971
  • Est. Priority Date: 04/03/1969
  • Status: Expired due to Term
First Claim
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1. A redundant fluid servomotor having plural or redundant operable sections;

  • first means controlling one section from a first fluid pressure source;

    second means for controlling another section from a second fluid pressure source; and

    third means controlling one of said sections from a third pressure source upon loss of pressure from the first and second fluid sources but rendered ineffective for control by normal pressure from either the first or second fluid source.

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