Liquid level sensor switch

Details Liquid level sensor switch Liquid level sensor switch

2006-07-18

2006-07-18

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Float

C116S228000

Reexamination Certificate

active

07077003

ABSTRACT:
A liquid level sensor-switch capable of effectively reducing variations in levels detected depending on directions in which it is inclined. The sensor-switch has a case, a guide rod formed therein, a float mounted on the guide rod with a clearance and being movable in the vertical direction along the guide rod in the case, an electrode plate attached to the bottom of the float and a pair of terminals disposed on both sides of the guide rod on the inside bottom of the case, wherein the float moves downward as the level of liquid lowers and it detects a specified low level by contacting the electrode plate with the paired terminals to make conductive a circuit formed between the terminals. It is featured by the fact that a pair of protrusions for restricting a biased movement of the float with respect to the guide rod are provided on both sides of the guide rod on the inside bottom of the case in a direction with a specified angle to a direction of arrangement of the paired terminals.

REFERENCES:
patent: 2000-2580 (2000-01-01), None
patent: 2003-184530 (2003-07-01), None
English Language Abstract of JP 2000-2580.
English Language Abstract of JP 2003-184530.

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