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7967572 |
Hydrogen operated power system
One form of a hydrogen operated power system according to this invention is a fuel cell system (20) provided with a supply system which supplies a gaseous fuel from a fuel supply tank (24) to a...
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7695251 |
Electronic control device for a synchronous pump
The invention relates to an electronic driving device (20) for turning on and off a synchronous pump, that is a pump (15) comprising a synchronous electric motor (1) with a permanent-magnet rotor...
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7645368 |
Orientation independent electroosmotic pump
According to some embodiments, a method, system, and apparatus for providing an orientation independent electroosmotic pump. In some embodiments, the method includes an anode and a cathode at...
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7520736 |
Sewage handling system, cover, and controls
A cover assembly for covering a vessel comprising a main cover comprising at least a first outlet opening adapted for connection to a pipe, and a second opening surrounded by a flat region adapted...
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7380566 |
Dewatering system and method for a subsurface vault
A system and method for dewatering a subsurface vault housing a portion of a pipeline is provided. The dewatering system includes a fluid inlet pipe adapted for fluidly communicating with the...
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7134486 |
Control of electrolysis gases in electroosmotic pump systems
Apparatus and methods according to the present invention preferably utilize electroosmotic pumps that are capable of generating high pressure and flow without moving mechanical parts and the...
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6722855 |
Oil pumping device
A manual/pneumatic oil pumping device having a housing defining therein an oil reserving space and an upper cover. A floating board is disposed in the oil reserving space. The upper cover is...
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6375430 |
Sump pump alarm
A sump pump has a float operated alarm switch mounted on the top end of the pump housing for activating an alarm when water rises above a normal operating level. The alarm is in a remote enclosure...
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6341944 |
Motor start and float switch assembly
An electrical circuit connects an electric motor of a sump pump to a power source and controls the energization of a sump pump assembly. The assembly includes a motor circuit having a sump pump...
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6254350 |
Automatic sub-floor pumping system
Hydrostatic pressure, which builds up from gravity and forces water into a basement through the floor or lower walls, is relieved by sensing the water under the floor and pumping out the water to a...
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5775877 |
Submersible motor-driven pump with float switch
An electric submersible motor-driven pump includes a pump housing (2) in which is located a pump motor (3) and an associated impeller (4). A separate detachable float and switch housing (6) is...
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5718269 |
Safety tank apparatus for liquid storage
A safety tank apparatus is provided for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn. It comprises tank structure...
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5667362 |
Pump system and method for operating the same
A pump system comprising a pump having a centrifugal impeller driven by an electric motor, a pair of upper and lower float switches for detecting a high water level HWL and a low water level LWL,...
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5501577 |
Gas operated pump leak preventer
A technique for detecting and containing liquid leaks in a liquid pumping, gas-operated diaphragm pump, and for stopping the pump operation when such leaks occur. If there is a leak in such a pump,...
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5449274 |
Sump system having timed switching of plural pumps
An electronic pump selector system uses a programmable processor to select one of a plurality of pumps to be energized in response to an appropriate feedback signal from the selected pump. A...
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5432830 |
High speed counter for alternative up/down counting of pulse trains and method therefor
An asynchronous counter includes a plurality of flip-flops, cascade connected to one another, the plurality of flip-flops serially receiving successive pulse trains having varying numbers of pulses...
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5309939 |
Safety device for water-conducting household appliances
A water-conducting household appliance includes a liquid container having a static content level, a fill control device, a cycle control unit, an inflow valve to be opened by the cycle control unit...
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5261791 |
Method and apparatus for recovering pollutants from an aquifer
Pumping apparatus for recovering a first liquid, such as a pollutant, floating on a second liquid, such as ground water. A pump immersed in the second liquid, or ground water, operates to produce a...
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5210886 |
Dual outlet bathtub drain valve for water conservation system
A system for recycling water used in a bathtub/shower is disclosed. The system alternatively directs water drained from the shower or bathtub to either a recycled water storage tank or a sewer...
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5184939 |
Above-ground storage system
An above-ground storage system, especially for use with hazardous materials is disclosed. The system includes a first inner tank and a second outer tank. An air-operated diaphragm pump is used to...
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5169291 |
Water heater with shut-off valve
A water heater (10) has a pressure-transfer module (20) interposed between an external pressurized-water circuit and the water inside the water-heater vessel (12) so that the water is at...
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5053120 |
Arrangement for draining water collecting in the container of a water separator of an internal-combustion engine
The invention relates to an arrangement for the automatic removal of water collecting in a fuel filter having a water separator. The evacuation takes place by means of a piston acted upon by a...
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5035581 |
Fluid level monitoring and control system
A system for monitoring and controlling the level of a fluid in a vessel, particularly applicable to controlling the pump operation at an oil well. The system includes a fluid level sensing unit...
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5007451 |
Sump protection system
A simple and inexpensive sump protection system comprises a retainer that is placed on a building floor over a sump and a hose that leads from the retainer. The protector is formed as a short tube...
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5007450 |
Add-on liquid overflow shut-off valve for tank
An add-on liquid overflow shut-off valve including a valve body, a float and an arm connecting the float to the body that is insertable in fully assembled form through a standard tank lid opening,...
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4912587 |
Protective circuit for an electrically driven liquid vacuum cleaner
In connection with a protective circuit for an electrically driven liquid or water vacuum cleaner it is proposed to utilize the abrupt rise of the vacuum, which is encountered when a blocking...
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4762201 |
Dry sump scavenging system with independent head source
A scavenging system (10 or 110) for hydraulic circulation installations. A pump (25) delivers the hydraulic fluid (19) which is thereafter collected in a sump (18 or 18A) that is to be maintained...
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4560323 |
Apparatus for controlling the flow of a fluid
An apparatus for controlling flow of a fluid having two speed-controlled positive displacement devices for supplying a load with fluid under pressure from a supply at a different pressure with...
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4552512 |
Standby water-powered basement sump pump
A water-powered positive displacement auxiliary sump pump has a drive water inlet connected to the municipal water supply via a float actuated pilot valve. The pump is designed to be constructed...
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4480469 |
Adjustable differential fluid level float indicator
The invention contemplates a float-operated electrical switching system with two fluid-level indications and with provision for mechanical adjustment of the difference in elevation between the two...
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4371316 |
Control for a bilge pump
To commence and maintain the operation of a bilge pump until the bilge area is sufficiently evacuated of excess bilge water, an electrically conductive ball is deposited in spanning relation...
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4184370 |
Liquid level measuring device
A liquid level measuring device for measuring the liquid level in a container, includes a fastening member for holding the device in a container, and a support with a lower end portion or prop...
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4116586 |
Constant fluid level control for machine reservoir
A housing contains a slidable spool operable to port a first pressurized fluid line to a fluid motor, and a housing reservoir has a float movable with a fluid level. The motor drives a pump which...
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3804110 |
MIXER TANK FOR DISPENSING POWDERY PRODUCT
A hopper is mounted on a tank and has an extraction screw entering a valved opening therein for extracting a dose of powder from the hopper into the tank, and fluid enters the tank through a tap,...
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3782860 |
SUMPLESS PUMP
A pump assembly adapted to be installed as a complete assembly in a conventional pipe riser with the pump assembly being so dimensioned that all its parts may be inserted in the upper end opening...
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3411449 |
Water-powered make-up and bleed-off system
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3299815 |
Multistage, turbine driven booster pump system
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3279001 |
Pouring apparatus with radioactive means for determining molten metal level in riser conduit
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3216177 |
Method of controlling the flow of absorbent according to the liquid level in a presaturation zone
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3213871 |
Throttle control linkage
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3032051 |
Expulsion valve mechanism
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