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| Number | Title | Issue Date |
| 7789638 | Pump for providing three modes of pumping A pump includes a base and a cylinder installed on the base. The base defines a pumping channel. The cylinder defines a first chamber and a second chamber with a diameter different from that of the first chamber. The first and second chambers are in communication wi... | 09/07/2010 |
| 7544050 | Hydraulic proportioning system An hydraulic proportioning system having a fluid actuated motor with a driven motor shaft, the motor being in fluid communication with and powered by a fluid source. A pump is provided having a drive shaft driven by the driven motor shaft of the fluid actuated motor... | 06/09/2009 |
| 7452193 | Adjustable pump assembly with single motor and multiple pumps A pump assembly includes a base plate upon which a drive motor is mounted and pump plate upon which first and second pumps are mounted. The pump plate is adjustably mounted on the base plate so as to be moveable between first and second positions relative to the bas... | 11/18/2008 |
| 7384183 | Mobile decontamination unit An apparatus capable of mixing and dispensing a decontaminant foam that is useful in strategic and tactical decontamination comprises in one embodiment a plurality of tanks 11, a pump assembly that is capable of mixing binary or multi-component decontaminant ... | 06/10/2008 |
| 7337869 | Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof A vehicle includes an integrated drive module coupled to an axle thereof. The module includes a hydraulic motor configured to provide motive power at an output shaft, and a differential for distributing the motive power to right and left portions of the axle. The hy... | 03/04/2008 |
| 7290994 | Rotary hermetic compressor and refrigeration cycle system A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressu... | 11/06/2007 |
| 7275735 | Fan drive for fluid cooler with evaporative heat exchanger A cooling tower and/or a fan drive system are provided which enhance cooling performance, are able to reduce lateral temperature gradients at least to some degree, provide for easy removal of debris and/or provide for easy fan adjustment. ... | 10/02/2007 |
| 7241119 | Tube pump and liquid injection apparatus A flexible tube has a first portion and a second portion located close to each other in the vicinity of an opening of an accommodating case. A pressing member moves from the first portion to the second portion along the tube while pressing a portion of the tube. An ... | 07/10/2007 |
| 7162948 | Variable stroke assembly balancing An assembly includes a piston and a transition arm coupled to the piston. The position of the transition arm is adjustable to vary a stroke of the piston. A balance member is adjustable relative to the transition arm to counterbalance the transition arm in varying p... | 01/16/2007 |
| 7134846 | Radial piston pump with eccentrically driven rolling actuation ring An hydraulic head features two or three individual radial pumping pistons and associated pumping chambers, annularly spaced around a cavity in the head where an eccentric drive member with associated outer rolling actuation ring are situated, whereby a rolling inter... | 11/14/2006 |
| 7104057 | Concrete-mortar transfer system of concrete pump car A concrete transfer system for a concrete pump car has a pair of concrete input tubes mounted in a hopper, first and second drive cylinders operating with the concrete input tubes for inputting and outputting the concrete by pressure pistons each having a driving ro... | 09/12/2006 |
| 7090475 | Hydraulic control circuit for a hydraulic engine with at least two speeds A hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side being connected to the discharge side with a bypass connection by a valve arrange... | 08/15/2006 |
| 6973798 | Air conditioning system for vehicle An air conditioning system 1 includes a primary compressor (an engine-driven compressor 6) driven by a primary driving source (an engine 2) and a secondary compressor (a motor-driven compressor 7) driven by a secondary driving source (a m... | 12/13/2005 |
| 6960069 | Arrangement structure of swash plate hydraulic pump hydraulic pump An arrangement structure of a swash plate hydraulic pump which can be used in a wide range of construction equipment and industrial vehicles and is small in size, simple in structure, and inexpensive is provided. For this purpose, an arrangement structure of a swash... | 11/01/2005 |
| 6913447 | Metering pump with varying piston cylinders, and with independently adjustable piston strokes A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of the cylinders. The actuating member is centrally located and the cyli... | 07/05/2005 |
| 6783331 | System and method of multiple-phase pumping A pump system for multi-phase fluids that includes a drive-shaft (11), mechanical differential units (12, 22, 23, 23′, D1 . . . Dn) and pumps (14, 14′, 25, 25′, 25″, 25′″, B1 . . . Bn) wher... | 08/31/2004 |
| 6659726 | Variable speed control of multiple motors A system for variable speed control of a plurality of motors under variable load demand is provided. The system includes a constant power source and a plurality of motors having electrical circuits with switches to connect with the constant power source. ... | 12/09/2003 |
| 6579067 | Variable speed control of multiple compressors A system for variable speed control of a plurality of compressors under variable load demand. The system includes a constant power source and a plurality of compressor motors having switches to connect with the constant power source. The system further in... | 06/17/2003 |
| 6454543 | Selectively operable multiple pump assembly The present invention relates to a space-saving and weight-saving motor-and-pump assembly which comprises a drive motor and a pump unit driven by the shaft of the said motor. In order to supply in parallel as many media as possible with an assembly of thi... | 09/24/2002 |
| 6162023 | Reciprocating cam actuation mechanism for a pump A multi-pump controlling means and method controls and drives two or more reciprocating pumps creating proportioned flows of fluids. The multi-pump controlling means in use is situated between a driving means, such as a double acting ram, and the pumps. T... | 12/19/2000 |
| 6109894 | Dual piston pump device for feeding two independent liquids A device consisting of two piston pumps for supplying two separate liquid systems, particularly a fuel injection system and an oil system in an internal combustion engine. The device includes a single housing containing the pump bodies; a single drive sha... | 08/29/2000 |
| 6022198 | Twin pump with a charging pump A double pump unit including two hydraulic pumps (1, 2) having drive shafts (5, 6) arranged coaxially with one another, which shafts are coupled with one another in a force-locking manner by a coupling piece (23). The coupling piece (23) is integrated in ... | 02/08/2000 |
| 5775881 | Oil supply system The present invention relates to an oil supply system with at least one pressure and/or volume dependent controllable pump (1) and an oil tank (5) or the like from which the pump draws oil and delivers it with controlled output pressure or output volume t... | 07/07/1998 |
| 5599177 | Precision metered multiple fluid pumping system A precision metering, multiple fluid pumping system comprised of a main pump for pumping a primary fluid and an auxiliary pump for pumping a secondary fluid adjustably linked to work in unison with the main pump. The auxiliary pump is linked to the main p... | 02/04/1997 |
| 5536151 | Device for the pneumatic discharge of concrete that is hydromechanically transported in a dense flow The invention covers a device for the pneumatic delivery of concrete that is hydromechanically transported in an enclosed stream (2) with a concrete pump (1) for the hydromechanical transport, and a solidification accelerator dosing device. In order to pr... | 07/16/1996 |
| 5423662 | Precision metered multiple fluid pumping system A precision metering, multiple fluid pumping system comprised of a main pump for pumping a primary fluid and an auxiliary pump for pumping a secondary fluid adjustably linked to work in unison with the main pump. The auxiliary pump is linked to the main p... | 06/13/1995 |
| 5395216 | Portable car-used oil extracting and tire inflation apparatus with separately disposed oil and air pumps Disclosed is a portable car-used oil extracting and tire inflation apparatus with separately disposed oil and air pumps. A first embodiment of the apparatus mainly includes a motor with a rotary shaft on upper and lower ends thereof. The upper rotary shaf... | 03/07/1995 |
| 5326232 | Two stage pump assembly with mechanical disconnect A two stage main pump has a first pump portion that is drivingly connected to an input shaft and a second pump that is drivingly connectable with the input shaft by a speed sensitive mechanism. The speed sensitive mechanism is urged by a resilient member ... | 07/05/1994 |
| 5284249 | Direct hydraulic drive for large flotation cells A flotation apparatus for floating minerals from fluid containing minerals in particulate form. The flotation apparatus includes a hydraulic motor directly connected to a drive shaft for driving a rotor located in the flotation cell, the hydraulic motor b... | 02/08/1994 |
| 5158438 | Quick mount pump frame An easily adjustable and serviceable plural component pumping system has a frame assembly with a pivotable drive beam. The drive beam passes through spherical rod bearings in the connecting rod of two positive displacement pumps. The pumps are mounted to ... | 10/27/1992 |
| 5140747 | Method for assembling a peristaltic pump A method of assembling a peristaltic pump having a motor housing having a driveshaft extending therefrom and a pump housing containing a pump including a rotor mounted on a stub shaft extending through the pump housing wherein the motor housing and the pu... | 08/25/1992 |
| 5108271 | Multiple connection for rotation vacuum pumps The invention refers to a multiple connection of rotation vacuum pumps having a common housing and drive motor. The vacuum pumps arranged in two rows. Each one of the vacuum pumps has a pump gear, and these gears, together with a drive gear, are arranged ... | 04/28/1992 |
| 5104300 | Liquid additive metering Dosing apparatus for adding a metered quantity of liquid additive to slurry or other flowable material handled by a ram-type positive displacement main pump (10) includes a positive displacement metering pump (32) whose outlet (44) connects into a materia... | 04/14/1992 |
| 5032065 | Radial piston pump A variable displacement radial piston pump includes a plurality of pump sections which are grouped into two. A first group of pump sections are communicable through a first discharge passage with a third discharge passage. A second group of pump sections ... | 07/16/1991 |
| 4930994 | Radial piston pump An electric motor driven radial piston pump for a motor vehicle brake system with slip control is disclosed wherein the radial piston pump includes two parallel working circuits drivable by the drive motor. The working pressure of the first working circui... | 06/05/1990 |
| 4917580 | Pump mechanism for simultaneous delivery of two atomizer liquids to a sprayer device A drive mechanism for controlling pump mechanisms for simultaneous delivery of two atomizer liquids in selectable ratio to a sprayer device comprising two pneumatically actuated piston-cylinder drive mechanisms (air motors comprising reversing valve) and ... | 04/17/1990 |
| 4907950 | Variable positive fluid displacement system A fluid pump has two pairs of rectangular oppositely-disposed pistons. The pistons of each pair travel simultaneously in opposite directions at the same speed and over the same distance. Valving is provided by a reciprocating port plate, in face-to-face r... | 03/13/1990 |
| 4806079 | Apparatus for simultaneously pumping a plurality of liquids Apparatus for simultaneously pumping two or more different liquids to a spraying device has a pair of discrete diaphragm pumps for each liquid. The pumps of each pair are connected in parallel and operate alternatingly so that one pump delivers a metered ... | 02/21/1989 |
| 4789310 | Multi-function implement for illumination and air-supply A multi-functional implement useful as a portable automobile accessory which includes a main casing and an air functional portion mounted in the main casing. The air functional portion includes a first mechanism for blowing air outwardly of the main casin... | 12/06/1988 |
| 4750005 | Continuous ink jet printer's selectable ink circulation subsystems A selective drive transmission system for continuous ink jet printing apparatus of the type having a plurality of discrete ink circulation subsystems, each including an ink supply, a print head for directing droplet streams toward a print medium and pump ... | 06/07/1988 |
