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US 4,542,762 AGranted
Automatic liquid delivery apparatus
OwnerBradner M. Littlehaleinventor
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OwnerBradner M. Littlehaleinventor
Estimating the term…
An automatic liquid delivery apparatus which employs no moving parts and requires no external source of energy except gravity to operate, dispenses liquid from a constantly available source, which is open to the atmosphere, to a receiver or zone requiring liquid in response to a detector which is located in the zone and initiates discharge of the liquid. The apparatus includes a valve device which retains liquid against discharge from a container or supply by air pressure confined in a space in a passage. The valve device delivers liquid through the passage when air in the space is released by a control device. The control device is a detecting mechanism or other automatic operating element. The detecting mechanism can sense the moisture level in soil, in liquid, in roots growing in moist air, in plant tissues or any other location where moisture differentials can be detected.
A method for automatically delivering a metered amount of a liquid from a source of the liquid to a zone of liquid use having a moisture content through a passage terminating in a dispensing outlet, the method comprising the steps of
A method for automatically delivering a metered amount of a liquid from a source of the liquid to a zone of liquid use through a passage terminating in a dispensing outlet, the method comprising the steps of
Dependencies are inferred from the claim text.