Rain Bird Corporation

Metallic Power, Inc.

Kenneth D Vail

Harvey J Nickerson

Stuart I Smedley

Russel Dean Leatherman

Andrew M Nguyen

Roger S Neitzel

James R Musselman

Robert H Jenkins

Ken R Venegas

Susan E Basch

Charles M Holmes

Described herein are several embodiments relating to modular irrigation controllers. In many implementations, the irrigation controllers are modular in that various functional components of the irrigation controller are implemented in removable modules that when inserted into position within the controller, expand the capabilities of the controller. Also described are various different types of expansion modules that may be coupled to the modular controller, having as variety of functions and features, as well as related methods of use and configuration of these modules in the controller.

Modular and expandable irrigation controller

A system for measuring available energy in a metal fuel cell is provided. The system comprises first componentry for measuring an electrical property of a mixture formed from one or more reaction products dissolved in a reaction medium. The electrical property may be such as to bear a known relationship with the concentration of the one or more reaction products. Using this known relationship, second componentry estimates the concentration of the one or more reaction products, and, responsive thereto, determines the available energy in the fuel cell.

Method of and system for determining the remaining energy in a metal fuel cell

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San Diego, CA, United States of America

Kenneth D Vail