B - Operations – Transporting – 67 – D
Patent
B - Operations, Transporting
67
D
341/34, 116/69,
B67D 7/08 (2010.01) G01F 23/16 (2006.01) H01H 35/18 (2006.01) H01H 35/34 (2006.01)
Patent
CA 1266589
DIAPHRAGM OPERATED SWITCH TYPE BIN LEVEL SENSOR Abstract of the Disclosure A bin level sensor that includes a diaphragm operated switch arrangement for sensing the level of material in bins, containers and the like, comprising a housing of disc-like configuration that is recessed on one side of same to define a diaphragm chamber over which a flexible diaphragm is secured that has a diaphragm plate applied to the inside surfacing of same and centered thereon which seats against and is centered with respect to a thrust shaft shiftably mounted in the housing; the thrust shaft includes one end against which the diaphragm plate acts and an opposite end against which is applied a swing arm that is adjustably spring biased against the indicated opposite end of the shaft and is operably associated with an off-on operating switch. The sensing device is mounted on the wall of a bin or container to expose the device diaphragm to the bulk material contained therein. When the device is oriented to sense the level of the bulk material involved, on the bulk material top level rising above the lower portion of the diaphragm, the diaphragm is indented inwardly of the diaphragm chamber to position the diaphragm plate of the unit involved so that it acts as a force multiplying lever in shifting the device shaft to effect level stabilization, which positioning is reversed when the bulk material level drops to the extent that the built in biasing action that acts on the device shaft restores the diaphragm plate flush against the diaphragm.
518258
Dwyer Instruments Inc.
Macrae & Co.
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