Electricity: circuit makers and breakers – Fluid pressure – Flow-responsive type
Patent
1985-04-18
1986-09-30
Tolin, G. P.
Electricity: circuit makers and breakers
Fluid pressure
Flow-responsive type
200 82R, 200277, 2003021, H01H 3534
Patent
active
046148493
ABSTRACT:
An electrical pressure switch that can be readily adapted for either normally open or normally closed operation and that has opposed annular seats, a movable contact and ball valve movable between and individually engageable with the seats, and an O-ring uniquely associated with the ball valve and a related sealing surface in seated, unseated and all intermediate positions of the valve to maintain an effective seal at all times against fluid pressure to which the switch is connected.
REFERENCES:
patent: 3286058 (1966-11-01), Perkats
patent: 3939316 (1976-02-01), Stropkay
patent: 4007343 (1977-02-01), Alten
patent: 4219710 (1980-08-01), Booth
patent: 4300601 (1981-11-01), Steinberg
patent: 4565907 (1986-01-01), Takahashi
Ford Motor Company drawing No. XP-157930, for Switch Assy-Trans Pressure, 8/13/84.
Lectron Products, Inc.
Tolin G. P.
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