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Exhaust-indicator

  • US 4,246,933 A
  • Filed: 12/21/1978
  • Issued: 01/27/1981
  • Est. Priority Date: 12/21/1978
  • Status: Expired due to Term
First Claim
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1. A device for utilizing exhaust fluid from a fluid control member, wherein said control member includes an inlet for monitored fluid, an inlet for actuator fluid, an outlet for actuator fluid, an exhaust for actuator fluid and a slide valve member for selectively establishing communication between either said actuator fluid inlet and outlet or between said actuator fluid outlet and said exhaust as a function of said monitored fluid'"'"'s pressure in said inlet, said device comprising:

  • a cylindrical housing having an axial bore therethrough and having means at one end for removably fitting said device to said exhaust of said control member;

    combination valve and indicator means including a valving portion slidable within said device'"'"'s bore between a first position, blocking exhaust fluid communication between said control member exhaust and laterally extending aperture means in said housing, and a second position, permitting communication between said control member exhaust and said aperture means in said device housing, said combination valve and indicator means including an indicator portion extending at least partially outside said device housing when said combination valve and indicator means is in said second position wherein said indicator portion extends outside said housing prior to exhaust of said fluid through said aperture means; and

    said laterally extending aperture means in said device housing in fluid communicating relationship to said control member exhaust outlet only when said combination valve and actuator means is in said second position and not so communicating with said fluid when said combination valve and indicator means is in said first position.

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