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An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.
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| Number | Title | Issue Date |
| 7278413 | Fuel pump system with precision variable restrictor A supplemental fuel supply system for use in an internal combustion engine having a fuel supply and using an on-demand supplemental oxygen supply includes a fuel pump and a supplemental oxygen supply regulator. The pump has a fuel supply and a fuel discharge. The pu... | 10/09/2007 |
| 7152679 | Downhole tool for deforming an object A downhole tool comprises a body defining a fluid chamber, a fluid outlet for directing fluid outwardly of the chamber, and an arrangement for producing a rapid reduction in the volume of the chamber, such that fluid in the chamber is displaced rapidly through the o... | 12/26/2006 |
| 7003838 | Hydraulic pig advance system comprising a control volume chamber containing hydraulic fluid and a force transmitting member This invention relates to a hydraulic pig advance system comprising a control volume chamber containing hydraulic fluid and a force transmitting member. The system further comprises two directional control valves which can be selectively repositioned to cause hydrau... | 02/28/2006 |
| 6929454 | Thick matter pump In a thick matter pump, especially for delivering concrete, comprising two delivery cylinders, it is known to provide two position sensors in one of the two cylinders for control of the pistons. However, leakage of hydraulic fluid can lead to an imbalance of the two... | 08/16/2005 |
| 6904982 | Subsea mud pump and control system A sub-sea mud pump system includes a plurality of pump units, and each pumping unit includes a plurality of pumping elements. Each pumping element includes a pressure vessel with a first and a second chamber, a separating member between the first and second chambers... | 06/14/2005 |
| 6592334 | Hydraulic multiphase pump The present invention provides a hydraulically driven multiphase pump system and methods for pumping a fluidstream from the surface of a well. The hydraulically driven multiphase pump system consists of two vertically disposed plungers. The plungers are h... | 07/15/2003 |
| 6171075 | Process and device for controlling a two-cylinder thick medium pump The invention relates to a sequential control system for two-cylinder thick medium pumps whose delivery cylinders (1, 1') are actuated hydraulically by two drive cylinders (5, 5') in opposing cycles. A pipe shunt (3) is provided inside a material feed con... | 01/09/2001 |
| 5711658 | Diaphragm pump with improved flow manifolds A diaphragm pump including a pump housing having a first housing side and a second housing side; a first unitary manifold flow connected to the first housing side; a second unitary manifold flow connected to the second housing side. The first and second u... | 01/27/1998 |
| 5639218 | High pressure water pump system having a reserve booster pump A superhigh pressure generator system is provided which comprises first, second and reserve boosters 1, 2, 3 which are respectively provided with a plunger chambers 4a, 4b, 4c within single rod-type oil hydraulic cylinders 7a, 7b, 7c on the plunger side a... | 06/17/1997 |
| 5634779 | Hydraulic fluid-driven, multicylinder, modular reciprocating piston pump A hydraulic fluid-driven, multicylinder, modular, reciprocating piston pumping machine of non pulsating flow and independently variable forward and return stroke speeds comprises several pumping modules (A, B . . . E) each having one primary cylinder (A1,... | 06/03/1997 |
| 5427507 | Valving for controlling a fluid-driven reciprocating apparatus A pair of control valve assemblies for alternately actuating a pair of fluid-driven free-piston devices by using fluid pressure communication therebetween. Each control valve assembly is switched by a pressure signal depending on the state of its counterp... | 06/27/1995 |
| 5344290 | Method and device for controlling a double-cylinder thick matter pump A method and device for controlling a thick matter pump having two feed cylinders, each coupled to a material feed tank and including a drive piston for pumping thick matter through the respective feed cylinder. Each drive piston is driven within a respec... | 09/06/1994 |
| 5252037 | Piston valved vertical pump for particulate materials A piston pump for conveying fragile particulate food products without damaging the product. The pump includes a filler and a discharge conduit containing piston valves actuated by hydraulic cylinders. The pumping chamber in which the product is compressed... | 10/12/1993 |
| 5222873 | Fluid-driven reciprocating apparatus and valving for controlling same A control valve assembly for alternately actuating a pair of fluid-driven free-piston devices by using fluid pressure communication therebetween. Each control valve is switched by a pressure signal depending on the state of its counterpart's piston. The c... | 06/29/1993 |
| 5222872 | Control system for piston pumps A double piston pump mechanism includes two pistons operated out-of-phase by respective fluid-actuated cylinders. The pistons suck-in fluid through suction valves and discharge pressurized fluid through pressure valves. The actuation of the cylinders is r... | 06/29/1993 |
| 5213478 | Slurry pumping method and apparatus A slurry pumping method and an apparatus to deliver slurry waste from factories to a filter press for solid-liquid separation. In this apparatus, a pair of laterally or vertically arranged diaphragm type pumping devices are activated by hydraulic cylinder... | 05/25/1993 |
| 5209649 | Control system for a two-cylinder thick matter pump A two cylinder thick matter pump has two hydraulic drive cylinders, two pistons supported and driven within each respective drive cylinder, and two feed cylinders. Each feed cylinder is adapted to receive a respective piston therein to pump the matter the... | 05/11/1993 |
| 5114319 | Concrete-pumping device Concrete-pumping device comprising a frame, a number of pump cylinders mounted on the frame which comprise a pump opening close to one end, sealed pump pistons which are guided slidably in the pump cylinders toward and away from the pumping device and whi... | 05/19/1992 |
| 4490096 | Pump system for liquid/solid materials with balanced output A pump system, particularly suitable for pumping wet mixes and slurries, achieves an output of pumped material substantially free from pulsations or fluctuations by control movement of power pistons (12A,12B) within power cylinders (10A, 10B). The power p... | 12/25/1984 |
| 4416593 | Gas operated down hole pump Double acting, gas operated pumps for lifting formation fluids from a well are disclosed as comprising a housing connectible to the lower end of a production string suspended within a well, and a pump assembly which may be lowered into and raised from a l... | 11/22/1983 |
| 4105373 | Fluid distributor device for controlling an apparatus for pumping wet concrete and the like A concrete pumping unit comprising a pair of parallel piston pumps, alternately placed in communication with a concrete supply conduit and with a concrete delivery pipe, through a single baffle blade valve and respectively driven by coaxial fluid pressure... | 08/08/1978 |
| 4036564 | Concrete pumping apparatus A concrete hopper has a plurality of arcuate channels in its bottom portion, preferably lined with a resilient material, such as rubber. The hopper includes a discharge end with discharge outlets formed therein in communication with the channels. A slidin... | 07/19/1977 |
| 3994627 | Pumping apparatus for wet concrete A pumping apparatus for wet concrete and the like comprising a pair of piston pumps having parallel axes, interlocked to one another and operating in phase opposition, the orifices of which are alternatively put in communication one with the conduit feedi... | 11/30/1976 |
| 3981622 | Hydraulic intensifier control system An intensifier unit includes a pair of sequentially operated reciprocating ram assemblies, each powered by a cylinder motor. Extension of the cylinder rods is accomplished by application of pressurized hydraulic fluid to the pistons. The pistons are retur... | 09/21/1976 |
