Patents Assigned to Polytec GmbH
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Publication number: 20220347613Abstract: A liquid separator for separating liquid out of a gas/liquid mixture, including an inlet, an outlet, a flow path connecting the inlet to the outlet and at least one separating device arranged in the flow path, the liquid separator being designed and embodied with simple structure and a compact construction to enable reliable separation of liquids in such a way that the separating device has a fabric portion for liquid separation through which the flow path passes, the fabric portion being arranged at an angle of 1° to 15° relative to the main flow direction in the separating device.Type: ApplicationFiled: October 28, 2019Publication date: November 3, 2022Applicants: Joma-Polytec GmbH, Karl Küfner GmbH & Co. KG, Spörl KG Präzisions-DrahtwebereiInventors: Stefan Heinz, Hannes Wölki, Ewald Müller, Marcus Dreher, Martin Konzelmann, Bernd Stauß, Martin Müller, Richard Balzer
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Patent number: 11486488Abstract: In order to enable efficient operation and reliable heat dissipation in a transmission, a pumping device (10) for lowering the internal pressure in a transmission (100) is equipped with a suction line (18), which leads from a suction point (20) on a connection side (14) to a discharge point (22) on a discharge side (16), a pump (24) for generating negative pressure at the suction point (20), a pump drive (26) for driving the pump (24), and an oil separator (28) connected upstream or downstream of the pump (24) in the suction line (18) that separates oil contained in the suction flow and returns it via a return line (30) to the connection side (14), and a check valve (34) connected downstream, preferably directly downstream, of the pump (24). A transmission (100) with such a pumping device (10), a use of a pumping device (10) and a method for reducing power losses in a transmission (100) are disclosed.Type: GrantFiled: February 14, 2020Date of Patent: November 1, 2022Assignee: JOMA-POLYTEC GMBHInventors: Torsten Helle, Hans-Peter Ott
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Patent number: 11415030Abstract: The invention enables an adequate crankcase negative pressure in an internal combustion engine, in all operating ranges to the extent possible and using a suction device for the crankcase ventilation of an internal combustion engine, which suction device is equipped with a housing, a controllable electric motor and a compressor for conveying crankcase gas, which compressor is driven by the electric motor, the compressor having connection points for a crankcase ventilation line, such that the crankcase pressure of the internal combustion engine is controllable by controlling the electric motor.Type: GrantFiled: January 7, 2019Date of Patent: August 16, 2022Assignees: Joma-Polytec GmbH, Bayerische Motoren Werke AktiengesellschaftInventors: Jörg Ströse, Christian Scheibe, Tobias Köhnlein
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Publication number: 20220221272Abstract: The invention relates to an interferometric measurement device and to an interferometric method for determining the surface topography of a measurement object (1). The essence of the invention is that the light intensities Iq(zi) of at least one other detector element q of the multi-element detector (6) are also used besides the light intensities Ip(zi) of this detector element to determine the value zp associated with a detector element p (6b) of the measurement device.Type: ApplicationFiled: May 26, 2020Publication date: July 14, 2022Applicant: Polytec GmbHInventors: Henrik SCHMID, Volker SEYFRIED
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Publication number: 20220187120Abstract: A method for interferometric vibration measurement at a plurality of measurement points using a measuring laser beam, including A. generating the measuring laser beam having a wavelength in the infrared wavelength range and a pilot laser beam having a wavelength in the visible wavelength range; B. deflecting the measuring laser beam and the pilot, laser beam by a common optical deflection unit, and controlling the deflection unit such that the pilot laser beam is incident on the measurement point; and C. carrying out a vibration measurement using the measuring laser beam. An angular deviation between the pilot laser beam and the measuring laser beam is determined and, in a correction step B 1, between method step B and C, the deflection unit is actuated in order to compensate for the angular deviation between the pilot laser beam and the measuring laser beam.Type: ApplicationFiled: March 9, 2020Publication date: June 16, 2022Applicant: Polytec GmbHInventor: Matthias SCHÜSSLER
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Patent number: 11345075Abstract: Method for bending a plastic pipe including arranging a bending portion of a plastic pipe in a heating zone of a heater and performing contactless local heating of the bending portion, wherein the heater is adapted to provide a first predetermined temperature difference between a neutral zone of the bending portion and a compression zone of the bending portion and a second predetermined temperature difference between the neutral zone and the compression zone of the bending area and an expansion zone of the bending area, introducing bending forces on holding regions arranged on the plastic pipe at a distance from the bending area and/or introducing bending forces on the bending area for deforming the plastic pipe into a deformation position and cooling the plastic pipe in the deformation position.Type: GrantFiled: June 11, 2019Date of Patent: May 31, 2022Assignee: JOMA-POLYTEC GMBHInventor: Stefan Heinz
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Patent number: 11333485Abstract: An alignment method for a beam-directing unit of an interferometric measuring device for directing a laser beam of a laser beam source towards a plurality of measurement points of an object under measurement, wherein a three-dimensional model of a measurement surface of an object under measurement is created by a plurality of spatially resolved images. A measuring device for carrying out an interferometric measurement by laser radiation is also provided, having a controller which is designed to align a beam-directing unit of the measurement device.Type: GrantFiled: June 5, 2019Date of Patent: May 17, 2022Assignee: Polytec GmbHInventors: Bernd Armbruster, Matthias Schussler, Bernd Heinen
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Publication number: 20220017047Abstract: Sensor cleaning system for cleaning sensors, in particular vehicle sensors, and associated method, characterized by a liquid reservoir for holding a cleaning liquid, and including a control unit for activating a switch unit and including at least one nozzle for spraying at least one sensor, the switch unit being provided between the liquid reservoir and the at least one nozzle, a liquid line being provided between the liquid reservoir and the switch unit and at least one nozzle line being provided between the switch unit and the at least one nozzle.Type: ApplicationFiled: September 17, 2020Publication date: January 20, 2022Applicant: Joma-Polytec GmbHInventors: Thomas Gulde, Christian Scheibe, Ralph Bühler
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Publication number: 20210278197Abstract: The invention relates to an alignment method for a beam-directing unit of an interferometric measuring device for directing a laser beam of a laser beam source towards a plurality of measurement points of an object under measurement, wherein a three-dimensional model of a measurement surface of an object under measurement is created by a plurality of spatially resolved images. The invention also relates to a measuring device for carrying out an interferometric measurement by laser radiation, having a controller which is designed to align a beam-directing unit of the measurement device.Type: ApplicationFiled: June 5, 2019Publication date: September 9, 2021Applicant: Polytec GmbHInventors: Bernd ARMBRUSTER, Matthias SCHUSSLER, Bernd HEINEN
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Publication number: 20210278271Abstract: A method for determining the path of a measurement beam of an interferometric measuring device including the method steps: A. recording a plurality of spatially resolved images of the object under measurement; B. creating a three-dimensional model of the object under measurement; C. providing a measurement-head model; D. creating an association between coordinates in the three-dimensional model of the object under measurement and coordinates in the measurement-head model; E. determining the measurement beam path. A measuring device for interferometric measurement of an object under measurement is also provided.Type: ApplicationFiled: June 5, 2019Publication date: September 9, 2021Applicant: Polytec GmbHInventors: Bernd ARMBRUSTER, Matthias SCHUSSLER, Bernd HEINEN
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Publication number: 20210255030Abstract: A method for determining the path of a measurement beam of an interferometric measuring device, includes A. recording a plurality of spatially resolved images of the object under measurement; B. creating a three-dimensional model of the object under measurement; C. providing a beam-position image-recording unit and recording at least one spatially resolved beam-position-determining image; D. determining the spatial position and orientation of the beam-position image-recording unit relative to the object under measurement; E. providing a spatial relation between the spatial path of the measurement beam of the interferometric measuring device and the position and orientation of the beam-position image-recording unit; F. determining the spatial path of the measurement beam of the interferometric measuring device relative to the object under measurement. A measuring device for interferometric measurement of an object under measurement is also provided.Type: ApplicationFiled: June 5, 2019Publication date: August 19, 2021Applicant: Polytec GmbHInventors: Bernd ARMBRUSTER, Matthias SCHUSSLER, Bernd HEINEN
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Patent number: 11053940Abstract: A vacuum pump having a housing which limits a working space and having a rotor, rotatably mounted in the housing about a rotor axis, the rotor guides a vane being movably mounted in the radial direction, the vane has a transverse extent, and the vane divides the working space into a suction side having a suction inlet and a pressure side having a pressure outlet, the housing has at least one oil outlet, the oil outlet is closed by a relief valve, the relief valve assumes an open position, when a limit pressure lying above a nominal pressure is exceeded in the working space, and the transverse extent of the vane is large enough that when the vane passes the oil outlet, the oil outlet is closed by the vane, so that there is no fluid connection between the suction side and the pressure side over the oil outlet.Type: GrantFiled: November 21, 2018Date of Patent: July 6, 2021Assignee: Joma-Polytec GmbHInventors: Hans-Peter Ott, Mathias Schlotterer, Torsten Helle
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Publication number: 20210189925Abstract: The invention enables an adequate crankcase negative pressure in an internal combustion engine, in all operating ranges to the extent possible and using a suction device for the crankcase ventilation of an internal combustion engine, which suction device is equipped with a housing, a controllable electric motor and a compressor for conveying crankcase gas, which compressor is driven by the electric motor, the compressor having connection points for a crankcase ventilation line, such that the crankcase pressure of the internal combustion engine is controllable by controlling the electric motor.Type: ApplicationFiled: January 7, 2019Publication date: June 24, 2021Applicants: Joma-Polytec GmbH, Bayerische Motoren Werke AktiengesellschaftInventors: Jörg Ströse, Christian Scheibe, Tobias Köhnlein
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Patent number: 10648468Abstract: An adjustable vane pump, in particular an oil pressure pump, with a suction side and a pressure side, with a housing and a rotor supported in the housing so as to be rotatable about a rotor axis. At least one vane is supported for movement in a radial direction. The housing comprises a housing floor and a housing cover transversely to the rotor axis, and an adjustment cage is arranged between the housing floor and the housing cover.Type: GrantFiled: May 12, 2017Date of Patent: May 12, 2020Assignee: Joma-Polytec GmbHInventors: Thomas Gulde, Andreas Blank, Michael Walter, Ralph Buehler, Torsten Helle
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Publication number: 20190186303Abstract: An oil supply device for a vacuum pump of an internal combustion engine, in particular of a car, including an oil feed line via which the vacuum pump can be supplied with oil for lubricating the vacuum pump. The oil feed line includes a valve connected to the oil feed line in an oil-conducting manner, which valve has a piston that is accommodated in a valve interior of the valve and can move at least between a supply position in which it allows a supply of oil to the vacuum pump and a blocking position in which it prevents the supply of oil to the vacuum pump, and has a spring element, by means of which a spring force that holds the piston in the blocking position can be applied to the piston when the internal combustion engine is at rest.Type: ApplicationFiled: December 17, 2018Publication date: June 20, 2019Applicant: Joma-Polytec GmbHInventors: Torsten Helle, Hans-Peter Ott, Mathias Schlotterer, Stefan Spille, Werner Engelin, Uwe Bindel, Frank Hoffmann, Dirk Ebert
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Publication number: 20190170141Abstract: A vacuum pump having a housing which limits a working space and having a rotor, rotatably mounted in the housing about a rotor axis, the rotor guides a vane being movably mounted in the radial direction, the vane has a transverse extent, and the vane divides the working space into a suction side having a suction inlet and a pressure side having a pressure outlet, the housing has at least one oil outlet, the oil outlet is closed by a relief valve, the relief valve assumes an open position, when a limit pressure lying above a nominal pressure is exceeded in the working space, and the transverse extent of the vane is large enough that when the vane passes the oil outlet, the oil outlet is closed by the vane, so that there is no fluid connection between the suction side and the pressure side over the oil outlet.Type: ApplicationFiled: November 21, 2018Publication date: June 6, 2019Applicant: Joma-Polytec GmbHInventors: Hans-Peter OTT, Mathias SCHLOTTERER, Torsten HELLE
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Patent number: 10138888Abstract: A rotor for a vane cell pump—in particular, for a vacuum pump—with a base body that is made of plastic and can be driven by rotation, and that rotates about an axis of rotation during operation, wherein the base body comprises a guiding section for slidably receiving a pump vane and wherein the base body is flanked in the direction of the axis of rotation by a first bearing surface and a second bearing surface, wherein the second bearing surface comprises bearing sections that are at a distance from one another and that lie on a circular path that is arranged concentrically to the axis of rotation.Type: GrantFiled: July 12, 2016Date of Patent: November 27, 2018Assignee: Joma-Polytec GmbHInventors: Hans-Peter Ott, Bernd Hess, Martin Thoma, Thomas Gulde, Torsten Helle, Freidhelm Pfitzer
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Patent number: 10119541Abstract: A pump device having a drive shaft which has a drive section that can be coupled with a drive system. The pump device includes a vacuum pump that can be driven by the drive shaft. The vacuum pump includes a rotor and at least one blade that can be moved in radial direction in the rotor and that divides pressure chambers. The pump device also includes a lubrication pump that can be driven by the drive shaft. The vacuum pump is arranged between the drive section and the lubrication pump. A locking device is provided between the rotor and the lubrication pump in which, when activated, the at least one blade remains in a radially internal position when the rotor is rotating.Type: GrantFiled: November 4, 2014Date of Patent: November 6, 2018Assignee: Joma-Polytec GmbHInventors: Andreas Blank, Torsten Helle, Martin Thoma
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Patent number: 10087930Abstract: A vane for a vane cell vacuum pump. The vane can be rotated about an axis of rotation by a rotor in a pump chamber and guided in the longitudinal direction in the rotor, with an upper side and a lower side to abut against the bottom and the ceiling of the pump chamber, with a rear side opposite a front side to limit the pressure chambers, with at least one face to slidably abut against an inside wall of the pump chamber on the casing side. The vane comprises a base body of a first plastic material and a vane end molded of a second plastic material to the base body forming the face. The base body comprises a mounting section around which the vane end is formed. The mounting section comprises at least one recess transverse to the front side and/or the rear side.Type: GrantFiled: July 11, 2016Date of Patent: October 2, 2018Assignee: Joma-Polytec GmbHInventors: Hans-Peter Ott, Bernd Hess, Stefanie Wuhrer, Martin Thoma, Torsten Helle, Friedhelm Pfitzer
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Patent number: 10018460Abstract: A device for the interferometric measuring of an object, including a light source to generate an emitted beam, a beam splitting device for splitting the emitted beam into a measuring beam and at least first and second reference beams, an optic interference device, and first and second detectors, with the interference device and the first detector being embodied cooperating such that the measuring beam, at least partially reflected by the object, and the first reference beam are interfered on at least one detector area of the first detector. The interference device and the second detector are embodied cooperating such that the measuring beam, at least partially scattered by the object, and the second reference beam are interfered on at least one detector area of the second detector. A method is also provided for the interferometric measuring of an object.Type: GrantFiled: November 2, 2012Date of Patent: July 10, 2018Assignee: Polytec GmbHInventors: Matthias Schussler, Christian Rembe, Alexander Drabenstedt, Robert Kowarsch, Wanja Ochs