Patents Assigned to Hengst GmbH & Co. KG
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Publication number: 20080006229Abstract: The invention relates to an oil/coolant module for a combustion engine, with an oil filter, an oil/water heat exchanger and a coolant pump called a water pump, whereby a coolant treatment system is provided that has a so-called water filter and which contains treatment additives that automatically enter the coolant circuit during assembly and/or during service of the coolant treatment system.Type: ApplicationFiled: June 12, 2005Publication date: January 10, 2008Applicant: HENGST GMBH & CO. KGInventors: Joerg Wilmink, Reiko Haase
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Patent number: 7299931Abstract: Liquid filter for a motor vehicle and method of venting the filter. The filter includes a venting arrangement adapted to vent air displaced from a filter. The venting arrangement has a first vent nozzle and a second vent nozzle. The first and second vent nozzles are arranged in series along an air flow direction. The first and second vent nozzles provide flow resistance to liquid flow. The method of venting includes arranging the first vent nozzle above the second vent nozzle and spacing the first and second vent nozzles from each other to provide greater resistance to fuel flow than to air flow. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.Type: GrantFiled: January 24, 2002Date of Patent: November 27, 2007Assignee: Hengst GmbH & Co. KGInventors: Ludger Schachtrup, Andreas Reuter
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Patent number: 7284566Abstract: Valve arrangement for guiding a liquid against a gas pressure gradient. The valve arrangement includes first, second and third pressure areas connected in series. An intake opens into the first pressure area. An outlet opens into the third pressure area. Flow check valves selectively open or close passage openings between the first and second pressure areas and between the second and third pressure areas. Whereby the flow check valves, free from outside influences, are opened when in a resting position and are automatically held in a closed position by gas counterpressure. Whereby the first and third pressure areas are respectively connected to the second pressure area via a ventilation line. Whereby a ventilation valve coupled to at least one of the ventilation lines, the ventilation valve selectively opening or closing the at least one of the ventilation lines. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.Type: GrantFiled: December 23, 2004Date of Patent: October 23, 2007Assignee: Hengst GmbH & Co. KGInventor: Oliver Bojer
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Publication number: 20070056443Abstract: The invention relates to an electrostatic separator (1) for separating particles containing oil out of a gas stream, having an emission electrode (2) and a deposition electrode (3), wherein the emission electrode (2) has a front corona region (4) extending into the gas stream and a rear deposition region (5). An outlet opening (9) for separated oil running along the deposition electrode (3) is provided at the level of, or behind, the deposition region (5) of the emission electrode (2).Type: ApplicationFiled: October 14, 2004Publication date: March 15, 2007Applicant: HENGST GmbH & Co. KGInventor: Stephan Ahlborn
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Patent number: 7115153Abstract: Electric oil separator that separates oil from an airflow of a ventilator. The separator includes an emission electrode and a collecting electrode. Moreover, the separator includes an injection device structured and arranged to inject oil as a cleaning fluid onto at least one of the emission electrode and the collecting electrode, so as to inject oil obliquely to a longitudinal axis of the collecting electrode.Type: GrantFiled: January 11, 2005Date of Patent: October 3, 2006Assignee: Hengst GmbH & Co. KGInventors: Stephan Ahlborn, Dieter Baumann, Bernhard Batram
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Patent number: 7100587Abstract: The invention relates to a device (1), for the ventilation of the crankcase (20) of an internal combustion engine (2), with a breather tube (3), running from the crankcase (20) to an inlet manifold (22) on the internal combustion engine (2), in the course of which an oil-mist separator (30) is arranged. The novel device is characterized in that in the course of the breather line (3), a pump device is arranged, by means of which a reduced pressure may be generated in the crankcase (20) relative to ambient pressure.Type: GrantFiled: March 5, 2002Date of Patent: September 5, 2006Assignee: Hengst GmbH & Co. KGInventors: Stephan Ahlborn, Thomas May, Sieghard Pietschner
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Patent number: 7069900Abstract: A module for an internal combustion engine formed as a unit comprising an oil filter for lubricating oil of the engine and an oil separator for crankcase ventilation gas and which, as a whole, is attached to the engine by a flange connection with flow connections. An oil duct for oil to be filtered and an oil duct for filtered oil extend through the flange. A ventilation duct for ventilation gas and an oil return duct for separated oil also extent through the flange. A drain duct connected to the crankcase via the flange connection is provided for draining the oil filter upon a replacement of the filter element. The drain duct, the ventilation duct and the oil return duct are united in the flange connection and along at least a part of their length in the module in a single combined gas-and-oil duct.Type: GrantFiled: July 13, 2004Date of Patent: July 4, 2006Assignee: Hengst GmbH & Co., KGInventor: Wilhelm Ardes
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Patent number: 7066726Abstract: The invention relates to a device for melting and conveying material such as plastic or metal. Said device comprises a conveying channel, which contains an admission opening for the material as well as a discharge opening for the at least partially melted material. The device also comprises heating devices that, between the admission opening and discharge opening, heat the conveying channel and/or the material, and comprises a slide that can move to-and-fro while conveying the material from the admission opening to the discharge opening. According to the invention, the conveying channel is provided with a tubular shape and with two walls and has an inner tube and an outer tube. The slide is provided as a sliding sleeve, which is placed between the inner tube and the outer tube, and is provided in two pieces. In addition, said slide comprises a closing sleeve for opening or closing the conveying channel and comprises a conveying sleeve that can be moved independent of the closing sleeve.Type: GrantFiled: June 30, 2001Date of Patent: June 27, 2006Assignee: Hengst GmbH & Co. KGInventor: Christian Boehnke
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Patent number: 7029575Abstract: The invention relates to a filter, such as an oil filter for a combustion engine. The inventive filter includes a filter housing and a valve, such as a non-return valve, a filter bypassing valve or a drain valve, that is arranged in the filter housing. According to the invention, the valve body of said valve is arranged at a combination component which is provided with a connector for connecting at least one additional filter component, such as an additional valve or a filter inset, to the combination component.Type: GrantFiled: September 8, 2000Date of Patent: April 18, 2006Assignee: Hengst GmbH & Co. KGInventors: Dieter Baumann, Wilhelm Ardes
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Patent number: 7025049Abstract: The invention relates to a device for crankcase ventilation of an internal combustion engine, comprising a ventilation duct extending from the crankcase to an induction tract of the internal combustion engine, whereby at least one oil vapor separator causing a drop in pressure is arranged in said duct and a crankcase vacuum control valve is arranged upstream or downstream therefrom and can be adjusted according to the pressure in the crankcase such that a lower pressure threshold valve in the crankcase is respected. The novel device is characterized in that a discharge duct extending from the crankcase to the induction tract of the internal combustion engine is also provided, whereby a crankcase overpressure limiting valve is disposed inside said duct and can be adjusted in a pressure-dependent manner to ensure that an upper pressure threshold in the crankcase is not exceeded.Type: GrantFiled: November 7, 2002Date of Patent: April 11, 2006Assignee: Hengst GmbH & Co. KGInventor: Sieghard Pietschner
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Publication number: 20050274664Abstract: A process for measuring and controlling the circulation of fluids in endoscope channels that includes placing at least one endoscope into a tank. Further, one or more inlet channels of the endoscope are coupled to one or more valves with connectors, saturating the tank and inlet channels with a fluid from at least one fluid supply in fluid communication with at least one circulation pump. Further still, at least one hermetic chamber having a known volume and the one or more valves, such that the hermetic chamber and valves are completely filled with the fluid. Controlling the fluid flow within the hermetic chamber with at least one controller, wherein the controller controls and records the emptying with one or more sensors detecting a high level and a low level of the fluid, and verifies the known fluid volume and flow rate from the recorded emptying of the hermetic chamber.Type: ApplicationFiled: March 18, 2005Publication date: December 15, 2005Applicant: Hengst GmbH & Co. KGInventors: Guido Stoehr, Ludger Schachtrup
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Patent number: 6926825Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.Type: GrantFiled: January 10, 2003Date of Patent: August 9, 2005Assignee: Ing. Walter Hengst GmbH & Co. KGInventor: Wilhelm Ardes
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Publication number: 20050161083Abstract: Valve arrangement for guiding a liquid against a gas pressure gradient. The valve arrangement includes first, second and third pressure areas connected in series. An intake opens into the first pressure area. An outlet opens into the third pressure area. Flow check valves selectively open or close passage openings between the first and second pressure areas and between the second and third pressure areas. Whereby the flow check valves, free from outside influences, are opened when in a resting position and are automatically held in a closed position by gas counterpressure. Whereby the first and third pressure areas are respectively connected to the second pressure area via a ventilation line. Whereby a ventilation valve coupled to at least one of the ventilation lines, the ventilation valve selectively opening or closing the at least one of the ventilation lines. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.Type: ApplicationFiled: December 23, 2004Publication date: July 28, 2005Applicant: HENGST GmbH & Co. KGInventor: Oliver Bojer
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Patent number: 6921479Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.Type: GrantFiled: December 1, 2000Date of Patent: July 26, 2005Assignee: Ing. Walter Hengst GmbH & Co. KGInventor: Wilhelm Ardes
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Patent number: 6884348Abstract: The invention relates to a module of units for an internal combustion engine, comprising, as first unit, a device for separating out contaminants from the lubricating oil in the internal combustion engine, whereby the device has a filter insert, a free-jet centrifuge, driven by means of the flowing lubricating oil, at least one supply channel for lubricating oil to be purified, an outlet channel, for lubricating oil which has flowed through the filter insert and a return channel for oil which has flowed through the centrifuge, whereby the centrifuge is arranged above the filter insert in a common housing. The novel module of units is characterized in that the module comprises a further unit of the internal combustion engine, the further unit, comprising a housing which is detachably connected to the housing of the device and that both housings form the return channel between housing regions, which contact each other in a sealing manner.Type: GrantFiled: October 23, 2001Date of Patent: April 26, 2005Assignee: Hengst GmbH & Co. KGInventor: Dieter Baumann
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Patent number: 6696671Abstract: With reference to a device for heating a meltable material, such as plastic, upstream from equipment for further processing, such as casting or extrusion equipment, which device includes a conveyor channel for the material and a heating means located outside the conveyor channel, the heating means being designed as a radiant heating means and the thermal radiation being directed onto the conveyor channel, the invention proposes that the conveyor channel consist of a material which completely or partially absorbs the thermal radiation.Type: GrantFiled: June 21, 2002Date of Patent: February 24, 2004Assignee: Ing. Walter Hengst GmbH & Co. KGInventor: Christian Boehnke
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Patent number: 6685829Abstract: The invention relates to a fluid filter, such as an oil filter for a combustion engine. The inventive filter comprises an exchangeable filter inset which is provided with a ring-shaped cross-section that encompasses an inner chamber. The outlet for the purified fluid is joined to the inner chamber. The inventive filter also comprises a discharge line for emptying the filter during a filter change. A central discharge dome is provided which extends into the inner chamber. Said dome, together with the filter inset is mounted in such a way as to be axially displaced between a first closing position which closes the discharge line and a second release position which releases the discharge line. According to the invention, the discharge dome is fixed to the housing and is pushed into the release position thereof when said dome is impinged upon with a spring.Type: GrantFiled: December 14, 2001Date of Patent: February 3, 2004Assignee: Ing. Walter Hengst GmbH & Co. KGInventors: Dieter Baumann, Wilhelm Ardes
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Patent number: 6635105Abstract: The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field.Type: GrantFiled: July 10, 2002Date of Patent: October 21, 2003Assignee: Ing. Walter Hengst GmbH & Co. KGInventors: Stephan Ahlborn, Heiko Schumann
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Patent number: 6626163Abstract: The invention relates to an oil separator for de-oiling crankcase ventilation gases of an internal combustion engine wherein the oil separator (1) comprises at least one cyclone encompassing a gas inlet connected to the crankcase of the internal combustion engine, a gas outlet connected to the air suction passage of the internal combustion engine, and an oil outlet connected to the crankcase sump of the internal combustion engine wherein the gas outlet, as a submerged pipe projects through a lid into the cyclone interior with the lid closing the cyclone at the top. The novel oil separator has a gas duct section which is provided above the gas outlet on top of the lid with the gas duct section comprising a cross-section horizontally enlarged to at least double size, and an oil drain passage is guided from this section downwards to the oil outlet or the crankcase sump.Type: GrantFiled: December 22, 2000Date of Patent: September 30, 2003Assignee: Walter Hengst GmbH & Co. KGInventors: Jürgen Busen, Sieghard Pietschner
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Patent number: RE38917Abstract: In a fluid filter with a housing and a filter element replaceably located in said housing, and with a filter by pads valve having a valve body held in the housing that is movable against the action of a spring from the closed position in which it cooperates with a sealing surface, into an open position in which it permits a fluid flow to bypass the filter element. The invention proposes that the sealing surface associated with the valve body be formed by the replaceable filter element.Type: GrantFiled: April 28, 2000Date of Patent: December 13, 2005Assignee: Firma Ing. Walter Hengst GmbH & Co. KGInventor: Wilhelm Ardes