Electricity: circuit makers and breakers – Special application – Actuated concurrently with operation or use of art device
Patent
1987-05-20
1988-04-19
Scott, J. R.
Electricity: circuit makers and breakers
Special application
Actuated concurrently with operation or use of art device
H01H 906
Patent
active
047391340
ABSTRACT:
A valve monitoring switch is operated by an adjustable length rod whose end senses the position of a valve, for example, a water supply valve. The rod, enclosed by an assembly-mounting nipple, is so pivot-mounted as to be capable of movement in a planar arc, whose plane is substantially coincident with or parallel to the component of valve movement as between its open and closed positions. When the rod is pivoted through a small arc of movement, against the bias of conventional electrical switches, they signal the valve position or its change. To effect installation without damage to the switch assembly, an angularly adjustable mounting socket for the nipple is provided; also, the rod length is adjustable, so that during installation it may be retracted alongside the electrical switch assembly; and after installation may be extended to and fixed in a position in which it will sense the state of the valve.
REFERENCES:
patent: 4110575 (1978-08-01), Meisenheimer
patent: 4695686 (1987-09-01), Merchant
Brochure-"Federal Supervisory Switches PIV/OSY", Federal Signal Corp.; Nov., 1986; 11 pages.
Bulletin No. 719; "PIVSU--A Post Indicator Valve Switch"; Potter Electric Signal Co.; Jul., 1984; 4 pages.
Bulletin No. 20E-16-1; "Supervisory Switches for OS & Y Gate Valves (Series NGV) and Indicator Post Valves (Series NIP)"; Notifier Company; Nov. 1978, 2 pages.
Bulletin No. 20E-16-3, "Supervisory Switch for Post Indicator Valves (PIV)"; Notifier Company; Aug. 1981, 2 pages.
Hopmann Robert E.
Royse David L.
Gross Jerome A.
Potter Electric Signal Co.
Scott J. R.
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