Matches 1 - 50 out of 193 1 2 3 4 >
Match Document Document Title
6634426 Determination of plunger location and well performance parameters in a borehole plunger lift system  
Plunger lift operations are difficult to optimize due to lack of knowledge of tubing pressure, casing pressure, bottom-hole pressure, liquid accumulation in the tubing and location of the plunger....
6478040 Gas supplying apparatus and gas substitution method  
Gas supplying apparatus and gas substitution method where machinery and parts constituting the gas system are not damaged, and where gas substitution in the gas system is carried out in a short...
6443173 Automatic drain for a fire protection sprinkler system  
An automatic auxiliary condensate drain for an automatic dry-pipe type fire protection sprinkler system, wherein condensation which forms within the sprinkler system due to changes in temperature...
6371162 Electric actuator for fluid control valves  
An electro-mechanical actuator for operating a fluid control valve and controlling the operation of one or more field instruments, including other valve actuators. An electro-mechanical actuator...
6314979 Liquid injection apparatus and method for horticultural watering systems  
An inventive apparatus and method is disclosed for the automatic injection of a liquid additive (e.g., liquid fertilizer, liquid herbicide, liquid pesticide, liquid fungicide, a wetting agent...
6286765 Pop-up spray head irrigation system uniformity enhancement apparatus and method  
A method and apparatus provides a controlled, continuous up-and-down motion of a pop-up sprinkler head device during an irrigation period to approximate a modified sine wave output from the pop-up...
6206042 Modular control apparatus for water treatment system  
A modular modular control apparatus for a water treatment system which periodically undergoes a regeneration cycle including a backwash phase and a replenishment phase. The modular control...
6138928 Center pivot suspension distribution system  
A liquid suspension distribution system is provided which is essentially a conventional center pivot irrigation system, but which has the innermost sprinkler guns sequenced by way of a programmable...
6098898 Master control system for conserving water by sprinkler systems within a geographical region  
A master control system for conserving water used by sprinkler systems within a predetermined geographical region includes a plurality of sprinkler systems each of which is assigned an identifying...
6070610 Fluid operated timer for a plurality of reservoirs  
A fluid operated timer includes an input for the fluid, a reservoir receiving fluid from the input, an actuator responsive to the fluid pressure in the reservoir reaching a threshold value, wherein...
6047719 Method and device for production of high-precision, continuous streams of mixed gas  
In a gas mixing system for producing high-precision, continuous streams of mixed gas consisting of a plurality of individually metered gas components, with an individual gas line including a...
5910244 Adaptable control valve for fluid treatment system  
A control valve for a fluid treatment system, such as a water softener or a water filter, includes a manifold which mounts a pair of open-ended, cylindrical valve bodies having ports in fluid...
5908157 Portable control system for use with conventional sprinklers  
A portable control system for use with conventional sprinklers including a portable housing. Further included is a plurality of interconnections positioned within the housing for allowing...
5873388 System for stabilization of pressure perturbations from oxidation systems for treatment of process gases from semiconductor manufacturing operations  
A pressure damping system for damping pressure perturbations incident to switching of switchable flow control means in a fluid flow circuit. The pressure surge damping system comprises a throttle...
5791168 Apparatus for diverting a flow of water in a washing machine  
An automatic washing machine includes a wash tub and a dispenser compartment which is connected to the wash tub. The washing machine further includes a valve assembly having a housing and a...
5785244 Method and system for automatically controlling an automotive HVAC unit  
A method and system for automatically controlling a heating, ventilating, and air conditioning (HVAC) unit of a vehicle includes multiple electric motors for actuating multiple respective doors...
5647388 Misting and watering system controller with light sensistive detector  
System and method for supplying water to plants. A photodetector detects light adjacent the plants and a threshold circuit generates a first signal representative of a first state when the level of...
5551598 Water run-on timer  
An apparatus for measuring and displaying a time interval between a valve closure and subsequent termination of a flow at a spigot is provided. The apparatus has magnetic sensors coupled to a flow...
5479338 Programmable controller apparatus for irrigation systems  
A programmable controller apparatus and method for irrigation systems including at least one removable control module interfacing with internal circuitry of the programmable controller for...
5473309 Apparatus for testing an irrigation system controller and method of testing irrigation systems  
An apparatus for testing the operation of an irrigation system is disclosed. The apparatus pinpoints defects in the irrigation system controller by simulating control signals and processing the...
5458048 Electro-pneumatic control device  
This is an electro-pneumatic control device which includes a valve station (2) designed similar to a subassembly. The valve station (2) is provided with a fluid conductor (4) which is equipped with...
5444611 Lawn and garden irrigation controller  
An improved irrigation controller is provided for selectively turning ON and OFF each of a plurality of sprinkler valve stations around a lawn or garden. The controller permits direct entry on a...
5363290 Irrigation controller  
An improved irrigation controller of solid state design utilizes a microcomputer which retains and executes a watering schedule input by a user through data input means. One of the parameters of...
5318065 Color valve multiplexer  
A coating material dispensing system comprises a hazardous area and a non-hazardous area. Multiple coating material type controls have coating material input ports, coating material output ports,...
5309942 Timer unit for controlling valves  
An inexpensive timer unit which can operate stably in the event of a power failure. The timer unit acts to switch the operation times of two valve mechanisms for opening and closing fluid passages....
5293554 Program controlled irrigation system  
A program controlled irrigation system (10) operates with two programs. Program A and Program B, for irrigating a plurality of zones. Selected zones are dedicated to the irrigation of grass, for...
5287888 Irrigation controller  
A device for expanding the number of stations controlled by an existing irrigation controller or the like, or which can be operated as a stand-alone irrigation controller. The device (10) includes...
5261794 Fluid pressure feeding apparatus  
A fluid pressure feeding apparatus for feeding cold water for cooling a mining pit into the pit and pumping water and muddy water heated within the mining pit onto the ground. A controller for...
5207354 Metered fluid valve with switchable outlets  
A valve suitable for lawn and garden irrigation with a fluid inlet and two fluid outlets and a means for switching the flow of water from one outlet to the other based upon a predetermined flow of...
5154349 Maintenance control apparatus for lawn watering system  
A maintenance control apparatus for a lawn watering system includes an accessible electrical receptacle and a portable switching unit. The unit includes a plug for detachably coupling into the...
5146991 Method for well production  
A method for producing a plunger lift well which optimizes production through the evaluation of the speed at which a plunger arrives at the wellhead within a fixed on-cycle interval. Time interval...
5113892 Freeze control and drain valve  
A pressure-activated diaphragm valve which when installed in the main up-stream side of a pressurized line, responds to signals from a control unit to shut off the main supply line and at the same...
5101859 Programmable electronic control unit for water distribution systems, particularly for the irrigation of gardens, lawns, kitchen gardens, terraces and balconies  
The control unit comprises a hollow external casing, an internal bolt rotatable in an internal cavity of said external casing to close and alternately to place in communication with a plurality of...
5082022 Multiple outlet water timer  
A multiple outlet water timer having an inlet and a plurality of outlets each having its respective control valve. The timer is operated by a clockwork mechanism with a cam on the clockwork...
5047965 Microprocessor controlled gas pressure regulator  
Adjustment of a gas regulator valve having a spring biased diaphragm controlled pilot valve is automatically effected by supplying augmenting pressure to the spring side of the diaphragm via an...
5038268 Irrigation system controller apparatus  
A computer-based controller controls and displays, on a real-time basis, the operation of a large number of watering stations. The controller provides functional statistics, assessment of the...
5033509 Structure of water flow control device  
A water flow control device comprising a water flow control system controlled to operate by a timer system. The timer system comprises a timer fastened in a control wheel mounted on a mounting...
5021939 Computerized sprinkler control system  
A computer-controlled irrigation system (10) comprising a computer (22), a number of remote valves (18), and a plurality of reference sensors (28) installed in the area to be irrigated. The number...
4989671 Gas and oil well controller  
A gas and oil well controller includes a microcomputer control circuit which can control well production by monitoring well pressure levels, by time limitations, or any combination of the two. The...
4987917 Controller synchronization to a sequencing distributing valve  
A basic controller concept is disclosed for a sequencing distributing valve having a series of multiple outlets and a control timer to direct a like series of timed output signals thereto which...
4938256 Apparatus for the production of particular concentrations of gaseous materials as well as for mixing various gaseous materials in a specified ratio  
An apparatus for the producton of particular concentrations of gaseous materials as well as for mixing different gaseous materials in a specified ratio in which the gaseous materials are supplied...
4937732 Irrigation controller  
An irrigation controller includes a microprocessor for controlling a plurality of watering stations under program control according to a plurality of parameter values, and a module dimensioned and...
4922433 Automatic irrigation water conservation controller  
A water conservation system that connects between a standard irrigation system that is controlled by a clock, and the water control valves of that system in order to limit the flow of water during...
4921048 Well production optimizing system  
A programmable system for controlling the operation of a plunger completion oil or gas production well to optimize production from the well. The controller operates one or more motor valves...
4916617 Controller for well installations  
A controller for gas-oil well installations which is microprocessor driven and compiles a datalog which is accessible locally for operator use. Customized microprocessor control for a given well...
4858103 Fluid valve control system for controlling fluid pressure or flow  
Controlled variable table data, which consist of pulse number data corresponding to the maximum controlled variable of a fluid valve and divided into N divisions in each of which given pulse number...
4854499 Temperature sensitive shower diverter valve and method for diverting shower water  
A temperature sensitive shower diverter valve and method for diverting shower water used between a source of shower water and a shower head to control the flow of water to the shower head. The...
4852051 Flexible irrigation controller  
The present invention discloses a simplified solid state controller for flexible use in controlling many individual watering stations that make up an automatic irrigation system. The operator input...
4838311 Control system for a programmed spraying device  
In the sequential coating of motor-vehicle bodies using a preprogrammed painter-robot, the paint is switched on and off by an automatically controlled pilot needle-valve (FNV) at predetermined...
4833593 Method for preparing information tables for a digital valve control apparatus  
An external system for preparing information tables is connected by a connector to a digital valve control system which controls a digital valve by driving a pulse motor according to the...
Matches 1 - 50 out of 193 1 2 3 4 >