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| Number | Title | Issue Date |
| 4505450 | Solenoid-operated pilot-actuated valve A solenoid-operated pilot-actuated valve is provided of the diaphragm type which has particular utility for irrigation purposes. The valve also finds industrial utility where it is desirable to control large amounts of flow energy with a small control sig... | 03/19/1985 |
| 4398562 | Motorized diverter valve A motor driven diverter valve is provided which diverts fluid flow from a single inlet port to either one of two outlet ports, or vice versa. The valve finds general, although not exclusive, utility in solar heating systems for swimming pools, in which th... | 08/16/1983 |
| 4269229 | Solar heat system A valve module is provided which finds particular utility in a domestic solar water heater system. The solar water heater system includes a collector, a storage tank, and a circulating pump. The system also includes a solid state electronic control module... | 05/26/1981 |
| 4230142 | Vent/vacuum breaker float valve assembly A vent/vacuum breaker float valve assembly is provided which includes a float sub-assembly that moves a seal into engagement with a vent port seat when liquid enters the body of the valve to seal the inner valve chamber when all the air trapped in the cha... | 10/28/1980 |
| 4195621 | Solid state differential temperature regulator for a solar heating system A solid state temperature regulator is provided for a solar heating system for use in conjunction with a swimming pool, or the like. The solar swimming pool heating system includes the usual components, namely, a pump, a filter, and a collector, and in wh... | 04/01/1980 |
| 4191166 | Solar heat system A domestic solar water heater system is provided which includes a collector, a storage tank, and a circulating pump. The system also includes a solid state electronic control module which automatically stops the circulating pump when the temperature of th... | 03/04/1980 |
| 4180236 | Normally-open valve assembly with solenoid-operated pilot A normally-open pilot-operated valve assembly is provided which closes when a solenoid-operated pilot valve is energized. The pilot valve is open when the solenoid is de-energized to remove fluid pressure from a chamber in the valve housing causing the ma... | 12/25/1979 |
| 4135696 | Pilot operated diaphragm valve A pilot type diaphragm valve assembly is provided which includes a solenoid-operated pilot valve which may be opened to remove fluid pressure from a chamber in the valve housing causing the main valve to open, and which may be closed to cause a buildup of... | 01/23/1979 |
| 4097763 | Electric programmer An electric programmer is provided which has general utility, although it will be described herein for controlling electrically-operated water valves in a lawn sprinkler system. The programmer is constructed to control a plurality of different valves for ... | 06/27/1978 |
| 4012673 | Timing valve control system A solid state timing valve control system and unit is provided which may be battery operated, and which has particular although not exclusive utility for controlling a water lawn sprinkler system. The control unit of the invention may be coupled to a wate... | 03/15/1977 |
| 3987430 | Programmed control unit A programmed control unit is provided which is capable of controlling one or more pieces of electrical equipment, and of turning such equipment on and off automatically at pre-established times which may change from day-to-day. The programmed control unit... | 10/19/1976 |
