Fluid handling – Ambient condition change responsive – For controlling soil irrigation
Patent
1993-05-03
1994-08-16
Chambers, A. Michael
Fluid handling
Ambient condition change responsive
For controlling soil irrigation
137392, 137545, 239 65, F16K 1736
Patent
active
053377770
ABSTRACT:
An apparatus (10) for controlling an automatic timer regulated sprinkler system; wherein, the apparatus (10) comprises a float member (60) disposed within a multi-stage screen member (30) secured within a receptacle member (20); and, wherein, the float member is operatively associated with a switch member (50) for controlling the flow of electrical current to the sprinkler system in response to the level of collected water within the receptacle member. Another apparatus (200) for controlling an automatic timer regulated sprinkler system; wherein, the apparatus (200) comprises a water-amount-responsive means (204) containing water absorbing material; and, wherein, the water-amount-responsive means is operatively associated with a switch means (203) for controlling the flow of electrical current to the automatic sprinkler system in response to the change in gravitational force or expansile force produced by water on the water-amount-responsive means. Each apparatus (10, 200) can override the timer's regulation of the automatic sprinkler system. Alternatively, each apparatus (10, 200) can substitute the timer and control the automatic sprinkler system through a feedback control mechanism.
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Shaw David C. H.
Shaw Judy Z. Z.
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