Title:
MOISTURE RESPONSIVE SPRINKLER CIRCUIT
Document Type and Number:
WIPO Patent Application WO2005099395
Kind Code:
A3
Abstract:
A sprinkler circuit responds to the presence of water and limits watering accordingly. The sprinkler circuit comprises a control circuit and a moisture responsive circuit. The control circuit may be wired in series to a sprinkler cable at any point between a sprinkler controller (e.g., timer) and a sprinkler valve, and is powered by a valve signal sent from the sprinkler controller to the valve. The moisture responsive circuit includes two pairs of electrodes wired in series and residing at different depths. When resistance across both pairs of electrodes drops sufficiently, a relay in the control circuit opens and interrupts the valve signal to the valve.
Inventors:
LASHGARI BIJAN (US)
Application Number:
PCT/US2005/011797
Publication Date:
March 16, 2006
Filing Date:
April 08, 2005
Export Citation:
Assignee:
LASHGARI BIJAN (US)
International Classes:
A01G25/16; B05B12/00; (IPC1-7): A01G27/00
Foreign References:
| US5148985A | 1992-09-22 | |||
| US6016971A | 2000-01-25 | |||
| US5445176A | 1995-08-29 | |||
| US5859536A | 1999-01-12 | |||
| US3224676A | 1965-12-21 |
Download PDF:
Previous Patent: METHODS AND DEVICES FOR MICROARRAY IMAGE ANALYSIS
Next Patent: SNAP FIT PULTRUSION FOR HOUSING ELEMENTS
Next Patent: SNAP FIT PULTRUSION FOR HOUSING ELEMENTS