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Class 137/395 - Control of outflow from tank


Subclass of Class 137 - Fluid handling
Definition: Apparatus which include means to control the outflow from
No. of patents: 55
Last issue date: 02/05/2008


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NumberTitleIssue Date
7325653Thermally compensated standpipe assembly for automatic transmission oil fill
A standpipe assembly for installation in the fluid sump of a vehicular transmission includes a two-piece fill pipe, a drain nut, a drain plug and a thermal actuator. The fill pipe includes a first tube having a first end secured in a flow passage formed in the drain...
02/05/2008
7210465Fuel supply device for fuel returnless system
A fuel supply device for a fuel returnless system is disposed in a fuel tank and includes: a fuel pump that draws, pressurizes, and discharges fuel in the fuel tank; a pressure regulating valve that regulates the pressure of the pressurized fuel and drains a surplus...
05/01/2007
7189365Liquid treating equipment including a storage vessel and a discharge vessel
In a liquid treating equipment to maintain a small amount of liquid to a desired liquid level with constantly supplying an additional liquid into a small capacity vessel, a storage vessel 13 to store the small amount of liquid, an injection tube 16 to ...
03/13/2007
7156133Liquid replenishment system
Apparatus is provided for controllably delivering liquid, preferably foam producing liquid, from a remote supply tank to a holding tank for replenishment of liquid in the holding tank. The apparatus utilizes a pressurized air source of a vehicle to supply the energy...
01/02/2007
7066197Supplying water to a reticulation system from different sources
A water supply system for supplying water to a building including a water tank (13) for collecting water from the roof (10) and gutters (12) of the building (11); a water level sensor means (21) for sensing the level of water in th...
06/27/2006
7040840Sewage effluent distribution means
Effluent-operated valves provide, in a septic system, distribution of effluent uniformly to a plurality of portions or fingers of a drain field. The installation of such valves in a tank that collects septic system effluent to be distributed to a plurality of finger...
05/09/2006
6950032Apparatus and method for protection against appliance leaking
A water protection system apparatus for detecting and stopping a flow of water which includes a power supply, a water ionization switch, and a controlled valve assembly. The water ionization switch selectively conducts electricity when exposed to water and includes ...
09/27/2005
6935367Flotation cell fluid level control apparatus
A fluid level control apparatus for selectively controlling the movement of liquid flowing out of a flotation cell is described. The fluid level control apparatus is significantly reduced in size in comparison with the flotation cell or cells to which it is connecte...
08/30/2005
6770194Water overflow device and water return device
A system for circulating water between a container and an external system in such a way as to maintain a desired water level in the container may include, an overflow assembly and a return assembly. The overflow and return assemblies are generally tubular structures...
08/03/2004
6684902Dual sensor liquid accumulator
An accumulator for collecting a volume of a liquid, which includes controls to permit the liquid to rise in a container to a preset upper level, at which level a drain valve is opened causing liquid to flow out of the accumulator. The accumulator utilizes...
02/03/2004
6598617Cascaded variable bias feedforward and feedback flow and level control system
A control system for maintaining the liquid levels in a plurality of reservoirs connected in series includes one or more nested control modules. The nested control module, one for each reservoir, includes a proportional only level controller in electrical...
07/29/2003
6497143Container with automatically controlled discharge for continuous metering of liquid flow
Liquid, such as milk, enters the sealed container from an inlet at the top of the container and exits through an outlet at the bottom of the container. The quantity of liquid in the container is sensed and a microprocessor calculates the total volume of l...
12/24/2002
6453939Flotation cell fluid level control apparatus
A fluid level control apparatus for selectively controlling the movement of liquid flowing out of a flotation cell is described. The fluid level control apparatus is significantly reduced in size in comparison with the flotation cell or cells to which it ...
09/24/2002
6439417Fuel tank and vehicle equipped with the same
A lower wall partially defining a fuel storing chamber of a fuel tank curves upward in accordance a decrease in an amount of fuel stored in the fuel storing chamber. The volume of a gaseous space in the fuel storing chamber is reduced, in comparison with ...
08/27/2002
6422263Nested and cascaded variable bias feedfoward and feedback flow and level control system
A control system for maintaining the liquid levels in a plurality of reservoirs connected in series includes a parenthetical control module and one or more nested control modules. The parenthetical control module includes a proportional only level control...
07/23/2002
6305405Valve for a tank and especially for a flow control arrangement having a plurality of fluid storage tanks
A fluid flow control valve having a cam disposed near an opening of a fuel passage. The cam is operable to be rotated about a shaft by the action of a float. As a fluid level in a tank changes, the cam rotates from an open position remote from the opening...
10/23/2001
6257287Fuel fill pipe shut-off device
A motor vehicle fuel fill pipe shut-off device includes a fuel shut-off valve normally closed relative to a valve seat and disposed in a path of fuel flow through the fuel fill pipe of the motor vehicle to a fuel tank thereof. The valve is connected to a ...
07/10/2001
6253781Process for controlling the level of an ammonium fluoride-containing acid solution in an acid vessel
The present invention provides a process for controlling the level of an ammonium fluoride-containing acid solution in an acid vessel. First, a tube provided with at least one hole in the sidewall is used as a high level sensing tube for the acid solution...
07/03/2001
6148838Automated processing liquid drain system
The present invention discloses an automated processing liquid drain system that utilizes a series of processing liquid drain tanks and at least two waste collection tanks that are in fluid communication with the processing liquid drain tanks such that wh...
11/21/2000
6112947Adjustable tank overflow for fluid chemicals
An apparatus for adjusting a measure of liquid for mixing with a second liquid which includes an adjustable overflow tube cooperating within a closed tank. The tank has a threaded top port and a sleeved bushing bottom port. The top and bottom ports are ax...
09/05/2000
6095167Rinse/dry apparatus including a chamber with a moveable side wall
An apparatus for rinsing and drying semiconductor wafers. The apparatus includes side walls, end walls and a base. One embodiment of the apparatus includes a rigid side and end walls. In another embodiment of the apparatus, at least a portion of the side ...
08/01/2000
6026837Automated chemical drain system
The present invention provides an automated chemical drain system which includes a buffer tank for collecting used chemical from a process machine, at least two level sensors in the buffer tank for sensing a fluid level and sending out a signal, a control...
02/22/2000
6021806Slurry distribution system for a CMP process in semiconductor device fabrication
A slurry distribution system for supplying slurry used in the planarization process of a wafer surface by chemical reaction is provided with a movable supply line having an open end which is maintained at a constant depth below the surface of the slurry i...
02/08/2000
5954078Method and apparatus for handling liquid chemical waste
A buffer tank and pre-wetting apparatus prevent a liquid chemical waste from crystalizing on the inside walls of a drain pipe that carries the waste to a waste tank. The pre-wetting apparatus includes a pre-wetting tank with an overflow pipe that leads to...
09/21/1999
5894857Fuel delivery device of fuel tank
A fuel delivery device for a fuel tank comprising a float chamber for sucking fuel in a normal state, a sub chamber for sucking a small quantity of fuel remaining within a tank and a communication chamber for communicating the float chamber and the sub ch...
04/20/1999
5887613Device for the regulation of a constant outflow from a liquid container
The invention concerns a device for the regulation of a constant outflow from a liquid container, in particular from a rain reservoir, with an outflow opening for the liquid, wherein to the outflow opening is assigned a movable throttle element, which in ...
03/30/1999
5871027Vacuum valve controller
A vacuum valve controller for a vacuum sewer system having a suction pipe which is communicated with a vacuum system by opening a vacuum valve, and which is cut off from the vacuum system by closing the vacuum valve, so that soil water in a soil water bas...
02/16/1999
5851384Apparatus for automatically delivering hemodialysis solution to a plurality of hemodialysis machines
An apparatus for automatically delivering hemodialysis solution to a plurality of hemodialysis machines includes a plurality of supply tanks adapted to be fluidly communicated with a corresponding one of the hemodialysis machines. Each of the supply tanks...
12/22/1998
5841028Automated liquid-level vessel apparatus
The invention relates to a vessel apparatus for holding and transferring liquids, in which the level of liquid may be controlled and monitored automatically. A depth sensing device, included in the apparatus, detects the presence or absence of liquid at p...
11/24/1998
5771178Fail-safe fluid transfer controller
A fail-safe fluid transfer control apparatus has full redundancy in the response to various inputs such as overfill probe signals, ground detection signals, and the like. Independent microprocessor controllers independently evaluate the inputs and each ou...
06/23/1998
5553794Sewage handling system
A sewage grinder pump system for use in moving sewage, having a vertically oriented cylindrical pump motor housing, a bottom plate affixed to and closing the pump motor housing, a motor supported by the bottom plate within the pump motor housing, the moto...
09/10/1996
5519638Automatic system for monitoring and replenishing hazardous liquids in tanks
An automatic system is disclosed which monitors and replenishes hazardous liquids in their holding tanks, as such liquids are typically used in manufacturing processes. The inventive system and method obviate the need for manual surveillance and handling ...
05/21/1996
5360412Method and device for regulating intravenous flow
A device for controlling flow rate in an intravenous line comprises a housing having an inlet port adapted to be connected to an incoming segment of an intravenous line and an outlet port adapted to be connected to an outgoing segment of the intravenous l...
11/01/1994
5321601Apparatus for controlling flow in a sewer regulator
A Gate valve is controlled in a Sewage Regulator by incorporating a Hydraulic System, a Programmable Logic Controller, and a Level or Depth Measuring device. By using this method, setpoint control can be utilized and the setpoint readily changed and verif...
06/14/1994
5234580Decanting apparatus with float supported submerged pump
A decanting apparatus for a waste water treatment reactor which includes a float system which may be independent of the decanting apparatus end which allows the decanting apparatus to be removed without removing the float system. The decanting apparatus i...
08/10/1993
5053111Method and apparatus for the batch distillation of water
A method and apparatus for automatically and sequentially distilling batches of water having substantially equal volumes in a plurality of distillation cycles, one batch in each cycle. During each cycle, water is admitted to a boiler tank for a fixed inte...
10/01/1991
5029620Method of operating a gas recovery system and apparatus for employing the method
A gas which is intermittently and/or irregularly released e.g. carbon monoxide-containing gas from an oxygen steel converter, is collected in a gas holder and delivered from the gas holder to a user installation. To avoid wastage of gas when the average r...
07/09/1991
5012429Method and apparatus for optimization of feedwater heater liquid level
A processor controlled supervisory apparatus for a liquid level controller of a feedwater heater obtains DCA characteristics and breakpoints thereof in a programmed manner. A plurality of DCA characteristics are obtained for a plurality of load conditions...
04/30/1991
4964437Apparatus and method for control of oil leakage from damaged tanker
Outflow of oil from a damaged tanker of "segregated ballast" type having some tanks dedicated for carriage of oil and others for water ballast is minimized by transferring oil out of the upper part of any damaged tank and minimizing the reduction of draft...
10/23/1990
4956763Portable self-contained surge level controller
A portable self-contained surge level controller detects the liquid level in a vessel, such as by neutron backscatter, and adjusts inlet or outlet flow to compensate for incoming surges while minimizing outgoing flow disturbances....
09/11/1990
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