Valve positioning monitoring apparatus

Details Valve positioning monitoring apparatus Valve positioning monitoring apparatus

1992-12-14

1994-04-26

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

251292, F16K 3700

Patent

active

053057813

ABSTRACT:
These is disclosed apparatus for monitoring the rotative position of a rotary closure member of a valve, wherein a shaft is rotatably mounted in a housing for connection to a part exterior of the housing which rotates in response to rotation of the closure member, and cam rings are assembled for rotation about the shaft through pinion gears rotatable with the shaft to cause cam surfaces about the rings to engage and activate switches in the housing.

REFERENCES:
patent: 3364317 (1968-01-01), Hermle
patent: 3367365 (1968-02-01), Stevens
patent: 3390943 (1968-07-01), Myers
patent: 3483344 (1969-12-01), Hermle
patent: 3522596 (1970-08-01), Fowler et al.
patent: 3839925 (1974-10-01), Ficken et al.
patent: 4238654 (1980-12-01), Hermle
patent: 4348568 (1982-09-01), Hermle
patent: 4424423 (1984-01-01), Hermle
patent: 4872482 (1989-10-01), Jarrett
Keystone Brochure, Figs. 792;793. 1991.
Drawing No. 8738-A "Cam Assembly F777/F778 Electric Actuator Standard Assembly". May 3, 1988.
Drawing No. 8756 "Cam Assembly F777/F778 Electric Actuator Standard & Auxiliary Assembly". May 23, 1988.
Advertisement of "Eliminator 3000," Automatic Switch Company (ASCO 8320 A90). Oct. 1991.
Advertisement of "Accutrak 2000," Westlock Controls. Sep. 1991.

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