Liquid level control device

Claim 1

In combination with a fluid reservoir having a cover plate and an aperture therethrough, a liquid level control device comprising: a. a casing disposed in the reservoir and extending downwardly from the cover plate to a point proximate the bottom of the reservoir; b. support means provided on the casing which engages the cover plate to support the casing through the aperture; c. a conduit for delivering fluid from the reservoir having one end terminating in proximity to the lower end of the casing and extending upwardly therefrom through the casing and the support means; d. a normally open reed switch emplaced within the casing at the lowermost end thereof and adjacent the end of the conduit; e. a pair of conductors connected to the switch and extending therefrom to a suitable indicating device which indicates depletion of the reservoir in response to the closing of the switch; and f. a float member provided with a plurality of magnets positioned therein slidably mounted on the casing and movable between an upper first position and a lower second position and wherein the magnets are operable to close the switch when the float member is in the second position.