G - Physics – 01 – F
Patent
G - Physics
01
F
340/144, 341/34
G01F 23/00 (2006.01)
Patent
CA 1134009
ABSTRACT OF THE DISCLOSURE A humidity control system, such as can be used with a piano to control the level of humidity within the interior of the piano, is comprised of a low water measuring/warning sub-system and a "blind" refill sub-system. The low water measuring/warning sub-system comprises stainless steel probes extending below the water level in a humidifying unit when the unit is filled with water. When the water in the humidifying unit is sufficiently high to cover the ends of the probes, a neon light is shorted, the absence of light emission from said neon light thereby indicating a sufficient water supply to be present in the humidifying unit. Evaporation of the water to a level below the ends of the probes causes a circuit including the neon light to be completed, thereby causing the light to be lit and indicating that the water supply in the humidifying unit has been diminished by a predetermined amount and can be replenished by said predetermined amount without the need for visual observation of the humidifying unit. The "blind" refill sub-system comprises a water refill conduit fixed in operative relation to the humidifying unit, the conduit having a water-receiving funnel attachable to the distal end thereof and disposed for convenient access such that the humidifying unit can be exactly refilled without the need for visually observing the unit to avoid overfilling.
320818
Foote Allen M.
Macrae & Co.
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