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GAUGE RECORDING MAXIMUM PRESSURE

  • US 3,779,080 A
  • Filed: 07/26/1971
  • Issued: 12/18/1973
  • Est. Priority Date: 07/26/1971
  • Status: Expired due to Term
First Claim
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1. Device for indicating highest fluid pressure experienced over time in a system experiencing varying pressure conditions, comprising a pressure resistant body defining a body cavity and having a rod passing in the top wall portion of the device and communicating with said cavity and a boss on said top wall eccentric to said opening and port means communicating said cavity continuously with system fluid pressure, a piston mounted and sealed within the body cavity between said opening and said port means for fluid pressure responsive movement, an indicator rod carried by the piston for varying extension through said rod passing opening responsive to piston movement;

  • and locking means limiting said indicator rod travel to one way movement responsive to a higher experienced pressure in the system comprising a locking member having a ring portion encircling the indicator rod, said boss defining a pivot shoulder to operatively coact with the locking member so that the member ring portion binds the indicator rod against return movement if the pressure drops below the highest experienced pressure in the system.

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  • 6 Assignments
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