First trip indicator for sensing devices of production control a

Details First trip indicator for sensing devices of production control a First trip indicator for sensing devices of production control a

1986-06-02

1989-05-23

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Fluid flow

116266, G01L 1912

Patent

active

048319570

ABSTRACT:
Three concentric hollow cylinders, with radii for slidably loose interfitting, are coaxially assembled against separation and partially sealed by a combination slotted seal and detent, for telescoping outwardly when actuated by exhaust pressure from a sensing device to expose a formerly hidden strip on one of the cylinder sides, and then to open a passage to prevent back pressure from affecting the sensing device. The partial sealing prevents slight leakage of exhaust pressure from outwardly telescoping the cylinders. The expansion of the slotted seal and detent when not compressed by telescoping cylinders engages resetting cylinder edges that are rounded. The detent is operable to prevent resetting but is overridable manually, the slotted seal and detent being recompressable by the rounded surfaces engagement without damage.

REFERENCES:
patent: 1420110 (1922-06-01), Kligge
patent: 1488754 (1924-04-01), Kempel
patent: 1497441 (1924-06-01), Henemier et al.
patent: 1610452 (1926-12-01), Kennedy
patent: 4246933 (1981-01-01), Taylor

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