Fluid handling – Ambient condition change responsive – For controlling soil irrigation
Reexamination Certificate
2011-08-16
2011-08-16
Hepperle, Stephen M (Department: 3753)
Fluid handling
Ambient condition change responsive
For controlling soil irrigation
C073S073000, C239S063000
Reexamination Certificate
active
07997294
ABSTRACT:
A soil moisture sensing system includes a housing embedded in the soil and having a water chamber adapted to receive water from a water source. A controlled drainage assembly includes a semi-permeable membrane coupled to said water chamber for controllably releasing water from the water chamber. A magnetically actuated switch is coupled to a float in the water chamber to provide a control signal when the water level in the water chamber is at a predetermined level.
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Glenn Michael A.
Glenn Patent Group
Hepperle Stephen M
Murphy Kevin
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