초록 ▼

The System is designed to shut-off the flow of liquid in a conduit, unattended, i.e., automatically, in the event of a liquid conduit rupture, liquid overflow, or the like. A float which carries a mercury switch is set over a recess formed therefor and into which liquid can flow and collect. The flo

The System is designed to shut-off the flow of liquid in a conduit, unattended, i.e., automatically, in the event of a liquid conduit rupture, liquid overflow, or the like. A float which carries a mercury switch is set over a recess formed therefor and into which liquid can flow and collect. The float rises with the collected liquid, and the mercury switch activates a solenoid valve which is interpositioned in a pressured-liquid conduit, to halt the flow of liquid through the conduit. The recess is formed in a lowermost portion of an area in which the subject conduit is sited.

대표청구항 ▼

For use in a liquid shut-off system, a float switch, comprising: a shell; a pivot pin fixed in said shell and in traverse thereof; a sleeve rotatably encompassing an intermediate portion of said pin; a buoyant element coupled at one end thereof to said sleeve; a liquid switch carried by said element

For use in a liquid shut-off system, a float switch, comprising: a shell; a pivot pin fixed in said shell and in traverse thereof; a sleeve rotatably encompassing an intermediate portion of said pin; a buoyant element coupled at one end thereof to said sleeve; a liquid switch carried by said element; and electrical lines, coupled at first ends thereof, to said switch; wherein said shell has an unapertured top, and a continuous wall depending from said top; and said wall has only (a) a pair of apertures in which said pin is fixed, and (b) a third aperture through which said electrical lines pass.