Programmable electronic self-learning timer for the control...

Details Programmable electronic self-learning timer for the control... Programmable electronic self-learning timer for the control...

1999-12-01

2001-01-23

Lee, Kevin (Department: 3753)

Fluid handling

Systems

Programmer or timer

C239S069000

Reexamination Certificate

active

06176264

ABSTRACT:

The present invention concerns a programmable electronic self-learning timer for the control of a solenoid valve, particularly for watering systems.
For the maintenance of lawns, gardens, kitchen gardens and other cultivated spaces the use of automatic watering systems based on solenoid valves controlled so as to open and close at pre-established moments in the course of a day or, more commonly, on different days, whether consecutive or not are increasingly widespread.
For the control of watering systems more or less complex timer devices, that are programmable as a function of the needs of the system and of the relative user are utilised.
Object of the present invention is to realise a programmable electronic timer that is capable to meet the needs of those users who require a daily, always the same, activation of their watering system and who want particularly simple and elementary actuating and programming operations.
According to the invention such object has been attained with a programmable electronic timer for the control of a solenoid valve, particularly but not exclusively for watering systems, comprising a start button, a stop button and a programmable processing unit, characterized in that said programmable processing unit is preset to determine, as a consequence of the operation on said start button, the opening of the controlled solenoid valve and the starting of a time count and, as a consequence of the operation on said stop button, the closing of the solenoid valve and the end of said time count with the memorisation of the counted time for the next automatic control for the opening and closing of the solenoid valve on the following days, at the same time and for the same watering time.
In other words, the timer according to the invention operates in the self-learning way, that is a single operation for the start and stop of the solenoid valve for a desired time determines the memorisation of the same operation in the form of a watering program that is automatically repeatable each day in the same way and for the same length of time.
The user must therefore operate the timer only once, simply by first pressing a start button and then a stop button, in order to obtain the desired programming also for the next days, without having to additionally operate on the timer.


REFERENCES:
patent: 4176395 (1979-11-01), Evelyn-Veere et al.
patent: 5272620 (1993-12-01), Mock et al.
patent: 5921280 (1999-07-01), Erickson et al.

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