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| SPRINKLER WATER CONSERVATION | |
| United States Patent [19] | [11] Patent Number: 6,019,290 |
| Grott | Date of Patent: Feb. 1, 2000 |
| 54 - | SPRINKLER WATER CONSERVATION DEVICE |
| 76 - Inventor | Frank S.
Grott. 2804 Via Paloma Dr.. Punta Gorda. Fla. 3395 |
| 21 - Appl. No. | 09/225,285 |
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22 - Filed |
Jan 4, 1999 |
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51 - Int. Cl |
AO1G 25/00 |
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52 - U.S. Cl. |
239/63; 239/71; 137/78.3; 340/602 |
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58 - Field of Search |
239/63. 67.71; 137/78.3. 78.2; 340/602.604.601; 116/173; 73/73 |
| [56]
References Cited U.S. Patent Documents |
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| 2,527.119 |
10/1950 Dauber et ~ 239/63 |
| 3,129,413 | 4/1964 Watson 3401521 |
| 3,803,570 | 4/1974 Badow et al. 3401602 |
| 4,020,417 | 411977 Brehob .3401602 |
| 4,268,824 | 511981 Philups 3401602 |
| 4,567,563 | 1/1986 Hirsch 239/63 |
| 5,825,295 | 1011998 Casady et al 137(78.3 |
| Primary
Examiner ~ Andres Itashnikow Assistant Examiner ~ Dinh Q. Nguyen Attorney, Agent, or Firm ~ Frank A. Lukasik |
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[57] The invention is directed to a system for controlling lawn and garden watering by using electronic sensors to detect the moisture in a lawn. A probe determines the soil water content and powers a signalling device which operates switches for either signalling the need for more water or to stop watering to prevent over-watering. The status of the moisture in the soil is indicated by raising a flag or fighting a strobe light for a visual signal. 7 claims, 8 Drawing Sheets |
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