Plural Compartments Formed By Baffles Patents (Class 137/574)
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Patent number: 5251473Abstract: Inner and outer welded steel protective tanks are separated by a space containing a granular insulating material such as perlite preventing excessive heating of fuel in a storage space in the inner tank, even when there is a fire at the site. The inner tank is subdivided into portions by a partition defining a storage space and an overfill containment space receiving overflow from the storage space portion, with a sensor detecting overflow. The overflow containment space is also arranged to collect separated fuel when the tank system is used with a vapor recovery system. The granular insulating material acts as an explosion suppressant by dissipating heat and fuel vapors which may be present in the insulation space as a result of leakage from the inner tank.Type: GrantFiled: September 21, 1990Date of Patent: October 12, 1993Assignee: Ace Tank & Equipment CompanyInventor: R. Allan Reese
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Patent number: 5240038Abstract: The surface tension tank is designed to feed a liquid propellant to a main engine and to at least one auxiliary engine or receiver of a space vehicle or satellite. The tank comprises a common shell containing at least two compartments of different sizes that are separated by a diaphragm provided with at least one strainer for providing communication between the large compartment and the small compartment. A pressurization gas feed orifice opens out into the large compartment. A liquid expulsion device is placed in the small compartment, and means for delivering liquid to the members to be fed are essentially disposed along a direction that differs little from the direction of the main acceleration imparted by the main engine, in such a direction as to accelerate liquid flow therealong.Type: GrantFiled: July 7, 1992Date of Patent: August 31, 1993Assignee: Societe Europeenne de PropulsionInventor: Frederic Canedi
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Patent number: 5159946Abstract: An over-flow tank for a semiconductor wafer washing apparatus includes a pair of opposed extensions integrally formed on a pair of opposed side walls of the tank. One of the extensions is provided with pipes and/or other devices. This form of attachment prevents formation of a stepped portion on which dust may accumulate. The extensions also act to guide the flow of clean air over the tanks, so that vapor formed in a chemical liquid tank in one row of such tanks is prevented from entering a pure water tank in an adjacent row.Type: GrantFiled: May 2, 1990Date of Patent: November 3, 1992Inventor: Aigo Seiichiro
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Patent number: 5141179Abstract: A reservoir for aircraft, such as a helicopter, containing a fluid and having at least orifices in its side wall close to its bottom and to which a fluid feed and return ducts can be connected. The reservoir has to allow the aircraft to effect temporary flight phases under negative load factor, a plate having a passage, for retarding the movement of the fluid contained in the reservoir, so that the fluid, moving from the bottom to the top of the reservoir during the temporary flight phases and passing through the passage of the retarding means, remains in communication with the orifice for the duration of the flight phases, while avoiding the entry of air into the duct.Type: GrantFiled: March 19, 1991Date of Patent: August 25, 1992Assignee: Societe Nationale Industrielle et AerospatialeInventor: Lucien F. Gautier
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Patent number: 5127432Abstract: The present invention provides a fuel tank comprising a generally planar fuel tank bottom and upstanding wall on the fuel tank bottom. A passage within the wall has a throat area for admitting fuel to the reservoir. A baffle attached to the wall and placed adjacent the throat area deflects fuel away from the passage. The reservoir is designed to contain a first minimum quantity of fuel when the vehicle is approximately level and a second minimum quantity of fuel when the vehicle is inclined, the second quantity of fuel being roughly one-third the first minimum quantity of fuel. The reservoir acts to confine fuel within an area to be withdrawn by a fuel pump or pick-up nozzle and supplied to an engine.Type: GrantFiled: September 16, 1991Date of Patent: July 7, 1992Assignee: Ford Motor CompanyInventors: Daniel M. Duhaime, James P. Hyde
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Patent number: 5111856Abstract: A liquid and gas tank is provided for operation, in particular, in satellites subject to low acceleration, that utilizes a separation force produced by surface tension to collect liquid in a privileged zone of the tank without allowing gas to escape via the privileged zone. The tank includes an outer first shell element having a curvilinear shape, and having at one end a surface portion S of radius of curvature r which is concave on a side that contacts liquid. The tank also includes an inner second shell element fixed to the first element, being convex in shape on a side that contacts liquid, and curvilinear in shape and including a surface portion S' having a part which is slightly inclined relative to the surface portion S in the privileged zone forming a narrowest zone between the surface portions S and S', the surface portion S' having a radius of curvature r' which is less than the radius of curvature r, wherein liquid is urged into the narrowest zone due to a capillary effect.Type: GrantFiled: December 14, 1990Date of Patent: May 12, 1992Assignee: Societe Europeenne de PropulsionInventor: Denis L. Baralle
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Patent number: 5111844Abstract: An automotive fuel system including a reservoir having upper and lower chambers on opposite sides of a partition in the reservoir, a high pressure fuel pump having an inlet connected to the lower chamber, a low pressure fuel overage return pipe returning overage fuel directly to the lower chamber, and a low pressure pump transferring fuel from the tank directly to the upper chamber. A drain in the partition conducts gravity induced fuel flow from the upper chamber to the lower chamber at a rate equal to the difference between the rate at which the high pressure pump withdraws fuel from the lower chamber and the rate at which overage is returned to the lower chamber through the overage return pipe.Type: GrantFiled: October 28, 1991Date of Patent: May 12, 1992Assignee: General Motors CorporationInventors: Dan H. Emmert, John E. Creager, Timothy F. Coha
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Patent number: 5107889Abstract: A reservoir arrangement for use in an automotive fuel tank includes a reservoir body in which fuel is guided and from which fuel is pumped. The reservoir body defines a fuel passage by upwardly depressing its bottom surface and fittingly engaged the depressed surface with a chamber plate. The chamber plate is made of a material whose swelling amount by fuel is larger than that of the reservoir body, thereby causing a tight fit of the chamber plate.Type: GrantFiled: January 28, 1991Date of Patent: April 28, 1992Assignees: Nissan Motor Company Ltd., Nifco Inc.Inventors: Michiaki Sasaki, Junya Ohno, Katsunori Ozaki
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Patent number: 5080077Abstract: A modular fuel delivery system including a reservoir in fuel tank, an electric high pressure pump in the reservoir fed only from inside the reservoir, and a jet pump fed only from the fuel tank and discharging into the reservoir to keep the latter filled and energized from the high pressure pump. A check valve is disposed between the jet pump inlet and the fuel tank to prevent backflow into the fuel tank. A partition on the bottom of the reservoir separates the jet pump discharge from the high pressure pump inlet and defines a standpipe around and above the jet pump discharge so that the jet pump stays submerged in fuel when the high pressure pump empties the reservoir. The pumping efficiency of the jet pump when submerged is better than when dry so that the delay in restarting the engine after the both the fuel tank and the resvoir are pumped empty is minimized.Type: GrantFiled: June 1, 1990Date of Patent: January 14, 1992Assignee: General Motors CorporationInventors: Ulf Sawert, Timothy F. Coha, Dennis P. McGrath
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Patent number: 5078169Abstract: A fuel tank having two tank spaces spaced from one another and connected to one another at a distance above their bottom. One tank space is equipped at its bottom with a retaining vessel having a closed shell. To assure that both tank spaces are reliably emptied, each tank space is equipped with a jet pump charged with fuel via a supply line. Both of the jet pumps, which are parallel or series connected to each other, deliver fuel to the retaining vessel.Type: GrantFiled: May 8, 1990Date of Patent: January 7, 1992Assignee: Daimler-Benz AktiengesellschaftInventors: Dieter Scheurenbrand, Peter Weymann, Aldolf G. Triffterer, Alfons Ziegelbauer
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Patent number: 5056552Abstract: A chemical bath for immersing articles such as integrated circuit wafers in a hot flow of etchant or other liquid includes a liquid receptacle with a first compartment for receiving the articles and a second compartment which acts as sump and further includes a trough which channels overflow from the first compartment into the sump. A pump recirculates liquid from the sump back to the first compartment. The receptacle is supported by a casing in which the lower region of the receptacle is situated. The casing in which the lower region of the receptacle is situated. The casing is sealed by a flange on the receptacle which overlays a rim member on the casing and by sealing material situated between the rim member and the underside of the flange. The flange is located below the trough in vertically spaced apart relationship with the trough. This inhibits direct heat transfer from the trough to the seal and thereby enhances seal durability.Type: GrantFiled: February 4, 1991Date of Patent: October 15, 1991Assignee: Imtec Products, Inc.Inventor: Allan Berman
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Patent number: 5054519Abstract: A chemical bath in which batches of integrated circuit wafers or other articles are immersed in hot liquid chemical during manufacture has a processing vessel, an adjacent sump vessel and a trough which carries overflow from the processing vessel to the sump vessel. A pump continuously recirculates liquid from the sump vessel to the processing vessel through a filter. A continuous inflow of liquid is received from a liquid chemical source and an intermittent outflow occurs through an outlet at an upper region of the sump vessel. The liquid chemical source may, for example, supply make-up fluid or be a reprocessor that repurifies the outflow from the sump vessel. The storage capacity of the sump vessel below the outlet is greater than that needed to contain the volume of liquid that is displaced in the processing vessel by the batch of wafers.Type: GrantFiled: December 26, 1990Date of Patent: October 8, 1991Assignee: Imtec Products, Inc.Inventor: Allan Berman
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Patent number: 5029611Abstract: A fuel supply apparatus for an internal combustion engine disposed in the fuel tank of automotive vehicles including a reservoir container on the tank bottom, a feed conduit through which the fuel is suctioned from the fuel tank 1 a return conduit through which excess fuel returned to the tank from the engine, and two inlet conduits. The first inlet conduit extends diagonally across the tank bottom having the first opening on the container wall and the first open end spaced about 180.degree. opposite the side of container where the first opening is opened. The second inlet conduit extends along the container wall having the second open end opened adjacent the corner diagonally opposite the first open end and opening on the wall located about 180.degree. opposite the second open end. The outlet port of the return conduit extends adjacent the open end of the first inlet conduit and forms an ejector portion with the open end.Type: GrantFiled: October 13, 1989Date of Patent: July 9, 1991Assignee: Nissan Motor Company, LimitedInventor: Michiaki Sasaki
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Patent number: 5025831Abstract: According to the present invention, there is provided a radial flow distributor comprising a cylindrical body portion having a vertical side wall, a top and a bottom. The cylindrical body portion has a horizontal baffle plate disposed within it, thereby dividing the body portion into a first compartment and a second compartment. The horizontally disposed baffle plate preferably is circular in shape and sufficiently large that it meets the side walls of the cylindrical body portion. The baffle also has a central opening in it. Conduit means, operably connected to the first compartment, are provided for introducing fluid to that compartment. A plurality of apertures are evenly spaced around the periphery of the side wall of the second compartment for distributing fluid from the distributor radially outwardly.Type: GrantFiled: August 24, 1990Date of Patent: June 25, 1991Assignee: Exxon Research & Engineering CompanyInventors: Yiu Wah Wong, Jeffrey W. Frederick, Rutton D. Patel
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Patent number: 5016670Abstract: In a fuel tank structure for an automotive vehicle, a fuel collector unit includes a collector body which is provided with a fuel collecting chamber and a fuel passage. The fuel passage has an inlet adjacent to a bottom wall of a tank body and an outlet opening toward the fuel collecting chamber for conducting fuel in the tank body into the fuel collecting chamber. The fuel passage is arranged such that the fuel below a predetermined vertical level at a certain location in the fuel passage is prevented from flowing out through the inlet. The fuel collector unit further includes an ejector which ejects oversupplied return fuel into the fuel passage through the inlet so as to suck the fuel therearound. The sucked fuel is mixed with the ejected return fuel and introduced into the fuel passage through the inlet.Type: GrantFiled: December 7, 1989Date of Patent: May 21, 1991Assignee: Nissan Motor Company, LimitedInventors: Michiaki Sasaki, Katsunori Ozaki
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Patent number: 5014737Abstract: A recirculating chemical bath arrangement includes a quartz process tank, and a sump chamber disposed directly adjacent to the process tank. A trough extends about the top portion of the outer walls of the process tank, the trough being inclined to cause gravital flow toward the sump chamber. The sump chamber includes a fitting in the bottom thereof which directs liquid from the sump into a pump/filter circuit, the output of which is fed into the bottom of the process tank. The liquid is thus caused to overflow the process tank and spill into the trough, and flow into the adjacent sump chamber. A plurality of heater units are secured to the exterior surface of the process tank to heat the liquid therein to the proper process temperature. The sump chamber is unheated, so that the liquid entering the pump/filter is at the coolest temperature of the liquid flow cycle.Type: GrantFiled: November 13, 1989Date of Patent: May 14, 1991Inventor: Allan Berman
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Patent number: 4951704Abstract: A concealed vent system is disclosed for closed system fire tank trucks, which permits the tank truck to be adequately vented while being filled completely by an auxilliary source of water. The vent system is a sloped conduit that originates in the clean out hatch atop the tank and terminates in a valving means external to the tank and rearward of the rearmost wheels of the tank truck, such that water vented does not pose a safety hazard to fire fighters.Type: GrantFiled: August 22, 1989Date of Patent: August 28, 1990Inventor: Larry F. Reber
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Patent number: 4945884Abstract: A canister with an electric fuel pump therein is connected to a cover for an access port through which the canister is installed on a fuel tank of an automobile by three hollow struts. Each strut has a first end press fitted into a socket on the cover and is telescopically received in a bore in the canister. Coil springs around each strut urge relative separation between the strut and the cover and a flare at a second end of each strut defines a stop to limit relative separation. A passage in the cover from a return fuel connection on an exposed side of the cover to one of the sockets conducts low pressure return fuel to the one of the hollow struts press fitted therein. The return fuel flows back to the canister through the one hollow strut.Type: GrantFiled: October 24, 1989Date of Patent: August 7, 1990Assignee: General Motors CorporationInventors: Timothy F. Coha, Richard F. Kostelic, Gregory K. Rasmussen
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Patent number: 4901762Abstract: A liquid-propellant tank for a spacecraft is symmetric about a longitudinal axis, and has a transverse partition (15) and a truncated conical partition (16), which divide the interior of the tank into a remote chamber (20), a proximate peripheral chamber (21) and a proximate axial chamber (22). Communication between the remote chamber (20) and the proximate peripheral chamber (21) is provided by a port structure (23), and communication between the proximate peripheral chamber (21) and the proximate axial chamber (22) is provided by a port structure (24). As liquid propellant is withdrawn from the tank, pressurant gas in the remote chamber (20) causes liquid propellant to pass from the remote chamber (20) into the proximate peripheral chamber (21) to replace liquid propellant thereby forced from the proximate peripheral chamber (21) into the proximate axial chamber (22), which replaces the liquid propellant withdrawn from the tank.Type: GrantFiled: October 3, 1988Date of Patent: February 20, 1990Assignee: Lockheed Missiles & Space Company, Inc.Inventors: John A. Miller, Jr., R. K. Grove
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Patent number: 4899784Abstract: A fuel tank contains a swirl pot into which a fuel return pipe from the engine is directed and which induces fuel flow from the tank into the pot so that the fuel level in the pot is kept high. Fuel flow into the pot is induced by directing a flow of fuel from the return pipe over a ramp past an opening into the tank so as to create a low pressure area at the opening.Type: GrantFiled: March 21, 1986Date of Patent: February 13, 1990Assignee: Ford Motor CompanyInventors: Michael J. Woodgate, Ronald P. Pardy
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Patent number: 4886031Abstract: In a dashpot for fuel tanks the cover of the intake chamber of the dashpot is dome-shaped and the suction filter is arranged at an interval below the cover. This arrangement prevents gas bubbles also being drawn off via the suction filter together with fuel.Type: GrantFiled: June 13, 1988Date of Patent: December 12, 1989Assignee: Daimler-Benz AktiengesellschaftInventors: Dieter Scheurenbrand, Helmut Wawra
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Patent number: 4858778Abstract: This relates to improvements in fuel tanks, and most particularly lightweight fuel tanks for aircraft. Complex and heavy internal supports and baffles are replaced by a support and baffle combination which is very simple, has very few bolts, and includes primarily transverse tubular members which are sufficiently large for a person to place the upper part of his body therein and have radiating, transversely elongated openings through which one's arm may pass so as to facilitate inspection and repair should it be necessary of the interior of the tank. The tank is of a double wall construction and includes an inner skin and outer skin separated by a honeycomb core. Along the longitudinal bottom and top of the tank there are defined troughs which are formed by removing the core between the two facing layers. The bottom trough becomes a sump for the tank, while the top trough becomes a head space.Type: GrantFiled: February 18, 1988Date of Patent: August 22, 1989Assignee: PATS, Inc.Inventor: Harvey O. Patrick
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Patent number: 4842006Abstract: A dashpot for fuel tanks is designed such that gas bubbles produced in the latter can no longer cause troublesome noises within the fuel tank. This is achieved by means of a gas separation space which is separated from the dashpot intake chamber, into which a fuel return line opens and to the upper wall of which a degassing line discharging above the maxiumum fuel level in the fuel tank is connected.Type: GrantFiled: June 13, 1988Date of Patent: June 27, 1989Assignee: Daimler-Benz AktiengesellschaftInventors: Dieter Scheurenbrand, Helmut Wawra, Wolfgang Kleineberg
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Patent number: 4838307Abstract: A bottom wall of a fuel tank body defines an inwardly extending projection which separates at least a lower segment of an interior of the fuel tank body into a first fuel chamber and a second fuel chamber. Fuel is pumped out of the first fuel chamber. A portion of the fuel pumped out of the first fuel chamber is returned to the first fuel chamber by way of an ejector pump disposed within the fuel tank body. The ejector pump is driven by the return fuel. A communication pipe connects the second fuel chamber to the ejector pump. The ejector pump transports fuel from the second fuel chamber to the first fuel chamber via the communication pipe.Type: GrantFiled: September 12, 1986Date of Patent: June 13, 1989Assignees: Nissan Motor Company, Limited, Jidosha Denki Kogyo KabushikiInventors: Michiaki Sasaki, Kiyokazu Yamamoto
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Patent number: 4809745Abstract: An oil container for the supply of hydraulic power circuits with a storage function and for receiving oil returned from the circuits. The oil container has storage means and comprises walls and internal partitions constituting a multifunctional system, the partitions defining a collection space adapted when required to accept at least a major part of the oil in the power circuit, an intake space for oil returned from the system, a transition space connected with an outlet of the intake space and separated from the intake space by an oil-permeable partition, a storage space connected with an outlet of the transition space and separated from the transition space by an oil-permeable partition so that the oil is returned into the oil container. The oil returning to the container owing to leakage or by the operation of valves is cooled, calmed, filtered and freed of bubbles on passing through the intake space and the transition space into the storage space.Type: GrantFiled: November 6, 1987Date of Patent: March 7, 1989Assignee: MAN Nutzfahrzeuge GmbHInventor: Rudolf Hormann
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Patent number: 4791959Abstract: A release agent management system that assures oil delivery to a metering roll in a fuser apparatus regardless of machine tilt includes at least two race portions that direct oil to a sump depending on whether the machine is tilted more or less than an angle 0 to thereby compensate for machine tilt.Type: GrantFiled: July 17, 1987Date of Patent: December 20, 1988Assignee: Xerox CorporationInventor: William M. Schwarz, Jr.
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Patent number: 4750518Abstract: A fuel delivery apparatus including an elongated liquid fuel collector or reservoir with generally flexible walls and with a stiffening member extending adjacent a side wall and attached to the collector for longitudinal strengthening of the collector without interfering with the collector's desirable capacity to flexibly conform to the associated fuel tank bottom wall.Type: GrantFiled: November 18, 1987Date of Patent: June 14, 1988Assignee: Chrysler Motors CorporationInventors: Ranald L. Griffin, Alfred H. Glover, William D. McKee
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Patent number: 4747388Abstract: A fuel system for automotive vehicles including a main liquid fuel tank which has a vertical fuel canister within the tank containing an electrically powered fuel pump. The canister has an open bottom positioned at the bottom of the fuel tank. The pump delivers liquid fuel from an inlet at the bottom of the canister to the engine and a pressure regulator in the line diverts fuel above the required volume back to the top of the canister which has an overflow to the main tank. The canister, which serves as a fuel reservoir, has a bottom septum closed by a movable valve. A filter material extends over the bottom of the canister to filter fuel entering the pump inlet. The filter is mechanically associated centrally with a spring biased lever connected to the movable valve. Under conditions where the bottom of the canister is starved of liquid fuel, the filter acts as a diaphragm to shift the lever against the resilient bias and open the valve to admit reservoir fuel from the canister to the pump inlet.Type: GrantFiled: November 7, 1986Date of Patent: May 31, 1988Assignee: Walbro CorporationInventor: Charles H. Tuckey
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Patent number: 4715399Abstract: A system for providing substantially gas-free liquid propellant to the engine(s) of a rocket or space vehicle comprises a storage tank (10) having a first opening (15) that communicates with a "fill, drain and feed" line (17) and a second opening (18) that communicates with a "pressurant and vent" line (20). A hollow trap (13) having a porous inlet window (22) and an exit port (21), which is aligned with the first opening (15), is positioned within the tank (10). A liner (14) having a plurality of porous windows (24) is positioned inside the trap (13), and is secured to the trap (13) circumjacent the inlet window (22) and circumjacent the exit port (21), but is elsewhere spaced apart from the interior wall of the trap (13).Type: GrantFiled: October 29, 1984Date of Patent: December 29, 1987Inventors: Don E. Jaekle, Jr., R. K. Grove
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Patent number: 4708170Abstract: A motor vehicle fuel tank is disclosed, having a fluid pressure thermoformed tank wall comprising a bottom wall and opposed side walls unitary with and extending upwardly from the bottom wall. The fuel tank is characterized in that it has a fuel reservoir unitary with the tank wall and, specifically, formed by convolutions in the bottom wall of the tank. The fuel reservoir comprises two opposed substantially C-shaped ridges extending upwardly into the tank from the plane of the bottom wall, each such ridge extending from a corresponding one of the side walls toward the opposed side wall to a second end, diminishing in height to approximnately the plane of the bottom wall at such second end. The two C-shaped ridges cooperate to partially surround a portion of the surface area of the bottom wall of the fuel tank. A channel between each ridge and the end of the other ridge permits fuel to flow into the fuel reservoir even during low fuel conditions.Type: GrantFiled: October 10, 1986Date of Patent: November 24, 1987Assignee: Ford Motor CompanyInventor: Wallace O. Bailey
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Patent number: 4703771Abstract: A vehicle fuel tank in which the tank bottom has a protrusion so as to provide a space for accommodating the frame and other parts of the vehicle under the fuel tank, the protrusion defining a plurality of compartments in the fuel tank. An overhanging siphon having an opening in the top thereof provides communication between compartments. A fuel inlet pipe and a fuel suction pipe are communicated with a first compartment so that the supply of fuel into the fuel tank and the suction of fuel from the fuel tank are conducted through the first compartment. A valve such as a float valve is provided on the siphon opening.Type: GrantFiled: July 23, 1986Date of Patent: November 3, 1987Assignee: Toyota Jidosha Kabushiki KaishaInventor: Etuhisa Mimura
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Patent number: 4694857Abstract: A fuel sender unit is provided for delivering fuel from a conventional fuel tank that may have a resilient bottom wall of the type that deflects under a fuel load. The fuel sender unit includes a support fixture mounted on the fuel tank, a sending unit within the fuel tank for pumping fuel in the fuel tank toward a point of use outside the fuel tank, and an extension apparatus for coupling the sending means to the support fixture for relative movement therebetween. The extension apparatus includes a plurality of fluid-conducting telescoping guide tube assemblies. The sending unit includes a pump and a reservoir cup for accumulating an auxiliary supply of fuel within the fuel tank to maintain a substantially uninterrupted supply of fuel to the pump. The sending unit is lowerable to a variety of depths within the fuel tank to reach and pump fuel accumulating in various regions along the bottom fuel tank wall notwithstanding sagging deformation of said bottom wall.Type: GrantFiled: March 31, 1986Date of Patent: September 22, 1987Assignee: Stant Inc.Inventor: Robert S. Harris
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Patent number: 4677917Abstract: A high volume covered railway hopper car is disclosed which has vertical end walls so as to fully utilize the space over the trucks of the car for lading volume. An automatic pneumatic unloading system is provided so as to unload a pulverant lading from the end compartments or hoppers, as well as the center, of the car, thus eliminating the necessity of sloped end sheets. A pneumatic loading system is provided which permits loading from below and thus permits the elimination of hatches, walkways, and the like on the roof of the car so as to permit the roof to extend substantially the full extent of AAR height clearances thereby to further maximize the lading volume of the car.Type: GrantFiled: February 14, 1985Date of Patent: July 7, 1987Assignee: ACF Industries, IncorporatedInventors: Richard H. Dugge, Eugene J. Cordani
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Patent number: 4638836Abstract: A motor vehicle fuel tank is disclosed, having a fluid pressure thermoformed tank wall comprising a bottom wall and opposed side walls unitary with and extending upwardly from the bottom wall. The fuel tank is characterized in that it has a fuel reservoir unitary with the tank wall and, specifically, formed by convolutions in the bottom wall of the tank. The fuel reservoir comprises two opposed substantially C-shaped ridges extending upwardly into the tank from the plane of the bottom wall, each such ridge extending from a corresponding one of the side walls toward the opposed side wall to a second end, diminishing in height to approximately the plane of the bottom wall at such second end. The two C-shaped ridges cooperate to partially surround a portion of the surface area of the bottom wall of the fuel tank. A channel between each ridge and the end of the other ridge permits fuel to flow into the fuel reservoir even during low fuel conditions.Type: GrantFiled: April 26, 1985Date of Patent: January 27, 1987Assignee: Ford Motor CompanyInventor: Wallace O. Bailey
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Patent number: 4612951Abstract: A water storage reservoir, prevailingly underground, comprising a first reservoir provided above the ground level and connected to water feeding and distribution means, an underground tank which is also connected to said water feeding means, a second reservoir provided inside said tank and on its bottom, and connected to said tank through opening means, the pressure of the water columns in series in the first reservoir and in the tank being always lower than the water feeding pressure.Type: GrantFiled: July 9, 1985Date of Patent: September 23, 1986Inventor: Fabio Desogus
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Patent number: 4580147Abstract: Ink jet apparatus for use with hot melt ink has an integrally connected ink jet head and reservoir system, the reservoir system having a sloping flow path between an inlet position and a sump from which ink is drawn to the head, the reservoir being housed in a housing of good heat conductivity material with a heater connected thereto, and further having one or more heat conducting elements positioned between the inlet position and the sump, which elements are constructed to act both as baffles and as heat conducting fins.Type: GrantFiled: October 16, 1984Date of Patent: April 1, 1986Assignee: Exxon Research and Engineering Co.Inventors: Thomas W. DeYoung, Viacheslav B. Maltsev
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Patent number: 4576197Abstract: The invention involves positioning the working end of a vertical pump below the surface elevation of the fluid, enclosing a space around the pump with a structure extending below the surface and having a submerged opening to the main reservoir, and drawing a vacuum in the enclosed space in order to raise the surface elevation in the enclosed chamber in order to maintain a minimum working depth for the vertical pump that will prevent air entrainment by vortexing during periods of low fluid levels outside the chamber.Type: GrantFiled: September 29, 1982Date of Patent: March 18, 1986Assignee: Midwest Energy Services CompanyInventor: Eugene K. Kempers
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Patent number: 4576337Abstract: A sewer cleaner having a water pump with a clutch-less connection to an engine draws water from a tank having a baffle with an orifice. A valve arrangement directs the output from the pump to either a hose on a reel or recirculates to the tank. The flow rate through the orifice is less than the operating output of the pump so that the recirculated water combines with that flowing through the orifice to permit operation of a hydraulic system to rotate the hose reel.Type: GrantFiled: February 24, 1984Date of Patent: March 18, 1986Assignee: FMC CorporationInventor: Steven W. Post
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Patent number: 4537211Abstract: A positive-displacement mass is introduced at the lowermost portion of an oil storage tank in order to reduce the amount of undrawable oil that remains at all times below the top edge of the suction line. It is necessary that the suction line not be occluded or interfered with and that the settled water at the bottom of the tank be permitted to be drawn off. In one aspect a tray is fitted into the bottom area of the tank and filled with water, or with inert solids, to displace the oil normally held as inventory at such location. In another aspect, a coffer dam is arranged around the suction line to permit the accumulation of water in the tank bottom, and in yet another aspect the shape and placement of the suction line nozzles are altered to improve storage efficiency.Type: GrantFiled: May 17, 1983Date of Patent: August 27, 1985Inventor: Robert Almeida
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Patent number: 4513774Abstract: This invention relates to apparatus for minimizing the amount of fluid leaked from a component in a hydraulic power system when the component has failed.The apparatus comprises a tank for use as a reservoir for the hydraulic fluid, the tank having a first chamber for storing a main volume of the fluid and a second chamber communicating with the first chamber for storing a reference volume of the fluid. The second chamber is provided with a fluid level switch which deactivates the system power source when the quantity of fluid in the second chamber has fallen to or below a preset level as a result of its leakage from the system via a burst hose or the like. The chambers 2 and 3 are dimensioned so that for a given quantity of fluid entering or leaving the tank, fluid level fluctuation in the second chamber is greater than the corresponding fluid level fluctuation which would occur in the first chamber if the fluid were only entering or leaving the first chamber.Type: GrantFiled: March 30, 1983Date of Patent: April 30, 1985Assignee: British Gas CorporationInventor: Donald J. Reid
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Patent number: 4503885Abstract: In association with a vehicle engine, a fuel system including a fuel tank with an inlet pickup for discharging fuel from the tank, pump means to transport fuel from the tank pickup to the engine in a quantity normally in excess of the quantity needed for engine operation at normal operating speeds, and means to return excess fuel back to the tank into a relatively small volume reservoir device surrounding the fuel pickup which enhances the fuel level about the fuel pickup under conditions of low fuel level in the remainder of the tank. The excess fuel returned to the tank passes through a flow control device including a jet aspirator which is the means to enhance the reservoir fuel level and including alternate flow control means to maintain continuous flow into the reservoir whenever the jet aspirator is blocked.Type: GrantFiled: December 16, 1983Date of Patent: March 12, 1985Assignee: Chrysler CorporationInventor: John F. Hall
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Patent number: 4489745Abstract: The fuel tank as disclosed is provided particularly for storage of aggressive fuel as they are used for and in control jets, attitude positioning systems in satellite and space vehicles. The fuel tank is of a spherical configuration and partitioned by a conical insert to obtain two spaces of different volumes. The small end of the cone faces the fuel outlet, opposite the driving gas inlet, and is constructed as a narrow mesh sieve. The fuel outlet is surrounded by a collection chamber likewise closed off by a narrow mesh sieve. The smaller one of the two chambers includes fuel lines which end in the corner space where the conical partition is affixed to the spherical tank and are closed likewise by sieves. The invention uses the strong surface tension forces of the fuel wetting the mesh to create a barrier against the passage of driving gas into the fuel line and outlet of the tank.Type: GrantFiled: November 22, 1982Date of Patent: December 25, 1984Assignee: Erno Raumfahrttechnik GmbH/MBBInventors: Gaston Netter, Injas Widjaja
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Patent number: 4482017Abstract: In a mobile liquid supply tank, such as a water tank for use as fire fighting apparatus, a hollow tank is provided with at least one fill neck and an overflow relief valve on the upper surface portion of the tank. A pressure fill valve is also provided near the lower portion of the tank for emptying or filling the tank. Each fill neck includes a buoyant float disposed within the tank that seals the fill neck when the tank is substantially filled with liquid. The overflow valve, adapted to open when the pressure within the tank exceeds a predetermined value, is preferably located in a recessed portion of the tank. A drain pipe extends from that recessed portion through the tank and exits from the bottom of the tank to discharge liquid overflow away from the forward path of the rear traction wheels of the transport vehicle.Type: GrantFiled: March 9, 1982Date of Patent: November 13, 1984Assignee: Alexis Fire Equipment Co.Inventor: Karl J. Morris
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Patent number: 4474210Abstract: A simplified, energy efficient, low cost liquid flow controlling weir apparatus is provided for "in tank" flow equalization and surge control. The apparatus is especially adapted for use in waste water treatment plants at tank outlets, and includes first and second, opposed, spaced apart upright weirs; the inboard first weir adjacent tank water is of lesser height than that of the outboard weir, and the latter is provided with one or more apertures therethrough at a level below the upper margin of the first weir. When water within the tank rises past and overflows the inboard weir plate, liquid flow is controlled by the outboard weir plate openings, water is rapidly backed up in the tank as storage, and tank discharge is maintained at a relatively uniform rate until the tank storage capacity is reached. The outboard weir plate prevents tank overflow, and is advantageously set at a height for overflow at 125-135 percent of design flow through the system.Type: GrantFiled: January 19, 1984Date of Patent: October 2, 1984Inventor: Lawrence A. Schmid
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Patent number: 4472277Abstract: The invention pertains to water and grease separators as used in a conventional plumbing system. A synthetic plastic receptacle is supported upon a framework usually located below, or adjacent to, a sink receiving liquid wastes to be separated. The framework supports a pair of coupling halves connected to the plumbing system, and inlet and outlet fittings mounted upon the receptacle align with and are connected to the frame supported couplings when the receptacle is mounted upon the frame. Baffling within the receptacle aids in the separation of water and grease, the fittings permit the receptacle to be quickly removed from the plumbing circuit, and a valved drain within the receptacle permits rapid disposal of its contents.Type: GrantFiled: August 11, 1982Date of Patent: September 18, 1984Inventors: Christopher Bailey, Ernest T. Lago
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Patent number: 4454717Abstract: In a power steering system, for a vehicle, including a reservoir, an engine-driven pump, a double-acting hydraulic piston-and-cylinder assembly and a steering-wheel-operated hydrostatic steering unit which can function as a manually-operated emergency steering pump, sufficient oil for emergency operation of the hydrostatic steering unit must be retained in the system if the connection between the outlet of the engine-driven pump and the inlet of the hydrostatic steering unit should fracture. The reservoir accordingly comprises an outer casing adapted to breath air at its upper end and having an outlet at its lower end adapted to communicate with the inlet of the engine-driven pump, and an inner casing having a port at its lower end adapted to communicate with a port of the hydrostatic steering unit and an oil outlet at its upper end communicating with the interior of the outer casing.Type: GrantFiled: November 3, 1980Date of Patent: June 19, 1984Assignee: David Brown Tractors Ltd.Inventors: Philip M. Wade, Robert T. Williams
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Patent number: 4453564Abstract: A fuel tank for motor vehicles, provided internally with a fuel feed pipe for connection to a fuel supply system of a motor vehicle engine, includes an inner wall extending between the lower wall and the upper wall of the tank, and surrounding the fuel feed pipe to define a chamber having a smaller capacity than the capacity of the tank and containing the fuel feed pipe. This chamber communicates with the remaining part of the tank through apertures in the inner wall. The tank is constituted by lower and upper plastics half shells which are welded together and have opposing main walls which define the lower wall and the upper wall of the tank respectively. The lower and upper half shells are provided with ribs which project into the tank, the ribs projecting from the opposing main walls being in contact with one another so as to define the inner wall.Type: GrantFiled: April 8, 1982Date of Patent: June 12, 1984Assignee: Fiat Auto S.p.A.Inventor: Giovanni Bergesio
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Patent number: 4445537Abstract: An improved boiler feed water deaerator is provided which includes a plurality of spray valve assemblies therein which are shielded to effectively eliminate undesirable valve chattering and vibrations resulting from the horizontal component of incoming feed water and turbulent water flow through the valves. The valves hereof include an elongated, tubular, open ended water flow-directing shield with a shiftable valve plug adjacent the outlet end thereof. The plug is secured to an elongated stem disposed axially within the shield, and support structure is provided for the stem adjacent the upper inlet of the shield for permitting reciprocation and limited pivoting movement of the stem and plug.Type: GrantFiled: September 30, 1982Date of Patent: May 1, 1984Assignee: Marley CompanyInventors: Roderick E. Athey, Alan G. Furnish
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Patent number: 4431027Abstract: A remote fluid reservoir blow-molded of polymeric material is provided with an antechamber for the reception of incoming high velocity fluid and impinging of same in a sinuous course on walls of the antechamber which are so configured as to smoothly reduce flow velocity and avoid undue turbulence upon introduction of the fluid into a main storage chamber.Type: GrantFiled: April 21, 1981Date of Patent: February 14, 1984Assignee: General Motors CorporationInventor: John J. Sabina, Jr.
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Patent number: 4424829Abstract: A reservoir vessel intended for storage of a small volume of reserve fluid in an automobile for a remotely located power steering or like system connected with the reservoir by flexible hoses and including a baffle structure for redirecting the incoming high velocity flow from the system to mix within the reservoir without undue turbulence and air entrainment.This invention relates to vehicle fluid power systems and more particularly to an improved reservoir therefor.The modern trend in vehicle design, front wheel drive and otherwise, creates even further premium on space in engine compartments, and a corresponding emphasis in redesigning engine-related accessories. In power steering and like fluid power systems, it is now often desirable to separate the fluid reservoir from what formerly had been unitary association with a submerged engine-driven pump, and rather to situate it remote from the engine and connect it to the steering gear and pump by flexible hoses.Type: GrantFiled: April 12, 1982Date of Patent: January 10, 1984Assignee: General Motors CorporationInventors: Donald L. Millington, Gerald A. Nyquist