Irrigation controller with rain delay feature
US5272620A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1993 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Mar 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/0428
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An improved irrigation controller of solid state design utilizes a microcomputer which retains and executes a watering schedule input by a user through data input means. A rain delay push button may be pressed a number of times to suspend operation of the watering schedule for a number of days equal to the number of times the button is pressed. A blinking LED will indicate the remaining days in the rain delay period to the user. In addition, the controller includes an LCD display which normally displays the current day and time, but which will temporarily display a new irrigation parameter being input into the schedule by manipulation of one of the data input means. The controller also includes a self test feature in which the watering schedule execution is suspended and the operability of various controller components is verified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.