Controller

Details Controller Controller

1999-05-28

2000-10-31

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Inspection means

137556, 251 634, 2513352, 251 635, 251263, F16K 3700

Patent

active

061387126

ABSTRACT:
A casing 61 is formed with a guide bore 69 having an open upper end for guiding an operating rod 21. An opening-closing indicator 77 is mounted on an upper end of the operating rod 21 and positioned within the guide bore 69 when a fluid channel is closed with the operating rod 21 in a lowered position. The casing 61 has a transparent convex lens 81 bulging upward from a top surface thereof and closing the open upper end of the guide bore 69. The indicator 77 is positioned as projected upward from the top surface of the casing 61 so as to be visible through the transparent lens 81 when the fluid channel is opened with the operating rod 21 moved to a raised position.

REFERENCES:
patent: 3297050 (1967-01-01), Rider
patent: 3451423 (1969-06-01), Priese
patent: 4498495 (1985-02-01), Worwood et al.
patent: 4877053 (1989-10-01), Yusko, Jr. et al.
patent: 4895341 (1990-01-01), Brown et al.
patent: 5516075 (1996-05-01), Itoi et al.

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