Internal-combustion engines – Lubricators – Crankcase – pressure control
Patent
1983-09-15
1984-08-21
Lazarus, Ira S.
Internal-combustion engines
Lubricators
Crankcase, pressure control
123198DC, 184 64, F02B 7708
Patent
active
044664028
ABSTRACT:
A pressure activated switch for use in series in the fluid flow path of a motor is disclosed, with the switch having a housing with a top end, a bottom end, and axially extending chamber extending between the ends with a vertically extending wall defining the periphery of the chamber. The chamber has an inlet port and an outlet port communicating therewith, with the ports in vertically spaced relationship to each other so as to obtain a flow of fluid from the motor between the ports, such that the level of fluid in the chamber is directly related to the level of fluid associated with the motor. A first electrical terminal extends from the bottom end into the chamber, with a second electrical terminal extending into the chamber through the wall, the terminals are adapted to be connected in the current starting path of the motor. An element is provided which moves with the level of fluid within the chamber. The element causes the engagement of the second electrical terminal with the first electrical terminal when the fluid in the chamber is at a level below which the motor should continue thereby completing a current path of a solenoid or relay which opens the current to the motor such that the motor in turn stops operating prior to any damage occurring thereto.
REFERENCES:
patent: 2792912 (1957-05-01), Kangas
patent: 2836164 (1958-05-01), Kinney
patent: 3499130 (1970-03-01), Norred
patent: 4256069 (1981-03-01), Masuda et al.
patent: 4299307 (1981-11-01), Scott
Lazarus Ira S.
Suroff Leonard W.
Suroff Leonard W.
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