David P Ransburg

US Patent:

7404415, Jul 29, 2008

Filed:

Jan 19, 2005

Appl. No.:

11/039527

Inventors:

Scott W. Jacobs - Peoria IL, US
Lawrence P. Heren - East Peoria IL, US
John D. Wisslead - East Peoria IL, US
David P. Ransburg - Peoria IL, US

Assignee:

L.R. Nelson Corporation - Peoria IL

International Classification:

F16K 31/48

US Classification:

13762411, 13762418

Abstract:

An intermittent fluid flow controller including a main body that houses an inlet in controlled fluid communication with an outlet, a mechanical timing mechanism including a rotatable member that rotates during an operation of the timing mechanism, and a first valve operated by the rotatable member. The first valve is disposed in the main body such that a rotational movement of the rotatable member actuates the first valve to intermittently permit and restrict a fluid flow between the inlet and the outlet over a pre-selected period of time determined by the operation of the timing mechanism.

US Patent:

46462244, Feb 24, 1987

Filed:

Dec 5, 1983

Appl. No.:

6/558043

Inventors:

David P. Ransburg - Peoria IL
Douglas C. Fletcher - Peoria IL
Sven E. Wahlstrom - Palo Alto CA

Assignee:

L. R. Nelson Corporation - Peoria IL

International Classification:

G05B 1101
A01G 2700

US Classification:

364143

Abstract:

A sprinkler system including a controller having a manual data entry device, a processor and a sprinkler controller. Data is entered through the data entry means relating to conditions in each of a number of zones in which sprinkling is to occur with respect to the amount of water needed to be applied to that zone and the soil water infiltration rate. Upon receiving this information, the processor determines for each zone the number of cycles and the length of time in each cycle that water is to be applied not only so that the amount of water applied during each cycle does not exceed the amount of water the soil can absorb during that cycle, but also so that the total amount of water needed by that zone is applied. The processor employs the number of cycles and the length of on time per cycle to organize the cycles for all of the zones, creating an application program. The application program is employed by the sprinkler controller to generate control signals for executing the application program on an automatic basis.