Electricity: circuit makers and breakers – Fluid pressure – Piston
Patent
1985-12-02
1987-02-24
Tolin, G. P.
Electricity: circuit makers and breakers
Fluid pressure
Piston
335154, 335205, 73 38, 73745, 340607, H01H 3538
Patent
active
046458875
ABSTRACT:
A pressure differential bypass sensor switch that utilizes the change in piston of a permanent magnet that is carried by a reciprocable position to actuate the switching element of an axial travel switch by the change in magnetic forces that act on the switching element as a result of the change in position of the reciprocable piston and the permanent magnet. Opposite sides of the piston are exposed, respectively, to the high pressure and low pressure sides of a filter in a liquid circulating system, and the piston is normally positioned at the high pressure side of a passage in which it travels by a spring that acts on it from the low pressure side. As the filter becomes clogged the pressure drop across it and, therefore, across the piston will increase, and the piston is calibrated so that an excessive pressure drop will drive it to the low pressure side. This movement of the piston will carry the permanent magnet to a different position relative to the switching element of the axial travel switch and change the magnetic forces acting on the switching element to provide a warning signal indicating an impending filter bypass operating condition.
REFERENCES:
patent: 3327079 (1967-06-01), Widl
patent: 3644915 (1972-02-01), McBurnett
patent: 3813622 (1974-05-01), Remington
patent: 4025885 (1977-05-01), Giannini
patent: 4130745 (1978-12-01), Hetzer
patent: 4426952 (1984-01-01), Crisp, Jr.
Facet Enterprises Inc.
Tolin G. P.
VanOphem Remy J.
LandOfFree
Pressure differential bypass sensor switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure differential bypass sensor switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure differential bypass sensor switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-110044