AUTOMATIC TURF WATERING SYSTEMS

• US 3,653,595 A
• Filed: 12/07/1970
• Issued: 04/04/1972
• Est. Priority Date: 12/07/1970
• Status: Expired due to Term

• Current Assignee: Julius Edward Jr. Greengard, Thomas J. Scannell
• Original Assignee: Julius Edward Jr. Greengard, Thomas J. Scannell
• Inventors: Greengard, Julius Edward Jr., Scannell, Thomas J.
• Primary Examiner(s): King, Lloyd L.
• Application Number:
  US05/095,738
• Time in Patent Office: 484 Days
• Field of Search: 239/70 137/624.11
• US Class Current: 239/70
• CPC Class Codes: A01G 25/162 Sequential operation
• CPC Class Codes: Y02A 40/22 Improving land use; Improving water use or availability; Controlling erosion

Abstract

A turf watering control system is provided for automatically watering selected areas of turf according to a preselected plan, which system includes a master control station and a plurality of spaced slave stations each connected to the master station by a power line, a source of operating electric power applied to said master control station, a plurality of sprinkler valves spaced from each slave station, connections between said valves and each said slave station whereby said valves are selectively opened and closed, an encoder source of radio frequency in said master control station applied to said power lines, decoder means at each of said slave stations, means at said slave stations actuated by said decoder means to energize the connections to said sprinkler valves and means at the master station selectively energizing the encoder means whereby a selected signal is transmitted to selected decoder means through said power lines.

Claims

1. A turf watering control system comprising a master control station and a plurality of spaced slave stations each connected to the master station by a power line, a source of operating electric power applied to said master control station, a plurality of sprinkler valves spaced from each slave station, connections between said valves and each said slave station whereby said valves are selectively opened and closed, an encoder source of radio frequency in said master control station applied to said power lines, decoder means at each of said slave stations, means at said slave stations actuated by said decoder means to energize the connections to said sprinkler valves and means at the master station selectively energizing the encoder means whereby a selected signal is transmitted to selected decoder means through said power lines.

2. A turf watering control system as claimed in claim 1 wherein the master control station includes sequential timing means sequentially connecting the slave stations to the master control station at selected intervals.

3. A turf watering control system as claimed in claim 1 wherein the master control station includes programmer means selectively energizing selected groups of slave stations at different times.

4. A turf watering system as claimed in claim 1 wherein the source of radio frequency is an AM source.

5. A turf watering system as claimed in claim 1 wherein the source of radio frequency is an FM source.

6. A turf watering system as claimed in claim 1 wherein the source of radio frequency is an audio frequency source.

7. A turf watering system as claimed in claim 1 wherein a manual operator switch means is provided to selectively actuate any desired sprinkler valve in the system.

8. A turf watering system as claimed in claim 1 wherein an audible signal is energized prior to energizing the sprinkler valve to open position.

9. A turf watering control system as claimed in claim 1 wherein a pause timer is provided for each slave circuit whereby a selected delay period is introduced between repeat cycles of a given sprinkler.

10. A turf watering control system as claimed in claim 1 wherein the radio frequency is applied directly to the power line connecting the master control and a given slave circuit through high pass filter.