Patents by Inventor Jan-Martin Veit
Jan-Martin Veit has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11959468Abstract: An apparatus for conveying thick matter has a drive cylinder for receiving hydraulic fluid, a drive piston, which is arranged in the drive cylinder, a conveying cylinder for receiving thick matter, a conveying piston, which is arranged in the conveying cylinder, and a piston rod, which is fastened to the drive piston for coupling motion together with the conveying piston. The drive cylinder has a rod-side opening for applying pressure to a rod side of the drive piston by way of hydraulic fluid and a crown-side opening for applying pressure to a crown side of the drive piston facing away from the rod side by the hydraulic fluid. A drive pump is designed to generate a drive volume flow having a drive pressure of hydraulic fluid for moving the drive piston. A pump connection is designed for variable connection of the drive pump to the rod-side opening or the crown-side opening for the flow of hydraulic fluid.Type: GrantFiled: May 20, 2019Date of Patent: April 16, 2024Assignee: Putzmeister Engineering GmbHInventors: Wolf-Michael Petzold, Jan-Martin Veit, Michael Schaefer, Frederik Kort
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Patent number: 11959469Abstract: A method monitors the state of a device having a first drive cylinder for receiving hydraulic fluid and a first drive piston which is movably arranged in the first drive cylinder. The method determines a speed of the first drive piston, establishes a difference between the determined speed of the first drive piston and an expected speed of the first drive piston, and determines a faulty state as a function of the difference established between the determined speed of the first drive piston and the expected speed of the first drive piston.Type: GrantFiled: August 20, 2020Date of Patent: April 16, 2024Assignee: Putzmeister Engineering GmbHInventors: Carl Wiesenack, Benjamin Hoelzle, Michael Schaefer, Wolf-Michael Petzold, Jan-Martin Veit, Wilhelm F. Hofmann
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Publication number: 20230265843Abstract: A method operates a construction material and/or viscous-material pump having: at least one conveying cylinder, the conveying cylinder being designed to receive and discharge construction material and/or viscous material; and at least one conveying piston, the conveying piston being disposed in the conveying cylinder for movement in order to draw construction material and/or viscous material into the conveying cylinder and to displace drawn-in construction material and/or viscous material out of the conveying cylinder.Type: ApplicationFiled: June 7, 2021Publication date: August 24, 2023Inventors: Carl WIESENACK, Benjamin HOELZLE, Michael SCHAEFER, Wolf-Michael PETZOLD, Jan-Martin VEIT, Ralf WEIMER
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Patent number: 11732488Abstract: A vehicle having a thick matter pump has multiple supporting devices, a rotatable mast assembly with part-mast members, and a hydraulic drive assembly with hydraulic drives for the supporting devices and the mast assembly. A valve assembly is provided for the hydraulic drive assembly. The valve assembly has a group of proportional valves and a group of switching valve devices which are each connected to at least one hydraulic drive of the supporting devices or the part-mast members. The switching valve devices are connected downstream of the proportional valves. Exactly one switching valve device is supplied by exactly one proportional valve and is connected downstream of exactly one proportional valve such that outputs of the proportional valves lead exclusively to inputs of the switching valve devices.Type: GrantFiled: January 29, 2020Date of Patent: August 22, 2023Assignee: Putzmeister Engineering GmbHInventors: Martin Diebold, Jan-Martin Veit
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Publication number: 20220307490Abstract: A method monitors the state of a device having a first drive cylinder for receiving hydraulic fluid and a first drive piston which is movably arranged in the first drive cylinder. The method determines a speed of the first drive piston, establishes a difference between the determined speed of the first drive piston and an expected speed of the first drive piston, and determines a faulty state as a function of the difference established between the determined speed of the first drive piston and the expected speed of the first drive piston.Type: ApplicationFiled: August 20, 2020Publication date: September 29, 2022Inventors: Carl WIESENACK, Benjamin HOELZLE, Michael SCHAEFER, Wolf-Michael PETZOLD, Jan-Martin VEIT, Wilhelm F. HOFMANN
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Publication number: 20220128069Abstract: A vehicle having a thick matter pump has multiple supporting devices, a rotatable mast assembly with part-mast members, and a hydraulic drive assembly with hydraulic drives for the supporting devices and the mast assembly. A valve assembly is provided for the hydraulic drive assembly. The valve assembly has a group of proportional valves and a group of switching valve devices which are each connected to at least one hydraulic drive of the supporting devices or the part-mast members. The switching valve devices are connected downstream of the proportional valves. Exactly one switching valve device is supplied by exactly one proportional valve and is connected downstream of exactly one proportional valve such that outputs of the proportional valves lead exclusively to inputs of the switching valve devices.Type: ApplicationFiled: January 29, 2020Publication date: April 28, 2022Inventors: Martin DIEBOLD, Jan-Martin VEIT
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Patent number: 11231054Abstract: A hydraulic drive system for a construction material pump has a hydraulic circuit for hydraulic fluid, a feed pump which is designed to feed hydraulic fluid into the hydraulic circuit, at least one controllable pressure-limiting valve unit, which is designed for variable adjustment of a limit pressure of hydraulic fluid of at least one portion of the hydraulic circuit within a pressure range, and a control unit. The control unit is designed to control the pressure-limiting valve unit according to at least one operating parameter of the hydraulic drive system and/or according to the hydraulic fluid in such a way that the pressure-limiting valve unit adjusts the limit pressure of the portion of the hydraulic circuit.Type: GrantFiled: June 7, 2019Date of Patent: January 25, 2022Assignee: Putzmeister Engineering GmbHInventor: Jan-Martin Veit
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Publication number: 20210239103Abstract: An apparatus for conveying thick matter has a drive cylinder for receiving hydraulic fluid, a drive piston, which is arranged in the drive cylinder, a conveying cylinder for receiving thick matter, a conveying piston, which is arranged in the conveying cylinder, and a piston rod, which is fastened to the drive piston for coupling motion together with the conveying piston. The drive cylinder has a rod-side opening for applying pressure to a rod side of the drive piston by way of hydraulic fluid and a crown-side opening for applying pressure to a crown side of the drive piston facing away from the rod side by the hydraulic fluid. A drive pump is designed to generate a drive volume flow having a drive pressure of hydraulic fluid for moving the drive piston. A pump connection is designed for variable connection of the drive pump to the rod-side opening or the crown-side opening for the flow of hydraulic fluid.Type: ApplicationFiled: May 22, 2019Publication date: August 5, 2021Inventors: Wolf-Michael PETZOLD, Jan-Martin VEIT, Michael SCHAEFER, Frederik KORT
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Publication number: 20210164497Abstract: A hydraulic drive system for a construction material pump has a hydraulic circuit for hydraulic fluid, a feed pump which is designed to feed hydraulic fluid into the hydraulic circuit, at least one controllable pressure-limiting valve unit, which is designed for variable adjustment of a limit pressure of hydraulic fluid of at least one portion of the hydraulic circuit within a pressure range, and a control unit. The control unit is designed to control the pressure-limiting valve unit according to at least one operating parameter of the hydraulic drive system and/or according to the hydraulic fluid in such a way that the pressure-limiting valve unit adjusts the limit pressure of the portion of the hydraulic circuit.Type: ApplicationFiled: June 7, 2019Publication date: June 3, 2021Inventor: Jan-Martin VEIT
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Patent number: 10273984Abstract: A hydraulic system, preferably for actuating and engaging a mobile slurry pump, includes a primary circuit, actuating a first hydraulic consumer, which circuit has a hydraulic drive assembly including at least one motor-driven hydraulic pump. The hydraulic system further includes a secondary circuit, actuating a second hydraulic consumer, which circuit has a second hydraulic drive assembly including at least one additional motor-driven hydraulic pump. In a first operating state, hydraulic oil from a common tank can be admitted to the hydraulic consumers arranged in the primary circuit and in the secondary circuit via the hydraulic drive assemblies thereof, independently of one another. In a second operating state, a portion of the hydraulic oil is supplied from the primary circuit to the secondary circuit to actuate the second consumer.Type: GrantFiled: March 20, 2013Date of Patent: April 30, 2019Assignee: Putzmeister Engineering GmbHInventors: Jan-Martin Veit, Werner Muenzenmaier
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Patent number: 10267343Abstract: Disclosed is a control system for a hydraulic work machine, comprising a plurality of hydraulic work circuits for supplying actuators and/or drive units of movable machine parts with hydraulic fluid, and an emergency stop circuit for the work circuits for avoiding danger caused by the machine parts. According to this disclosure, the emergency stop circuit comprises a single safety valve which is connected in parallel to the work circuits via at least one branch line each at the inlet and to a pressure relief point at the outlet.Type: GrantFiled: October 20, 2016Date of Patent: April 23, 2019Assignee: Putzmeister Engineering GmbHInventors: Jan-Martin Veit, Wolf-Michael Petzold
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Publication number: 20170037882Abstract: Disclosed is a control system for a hydraulic work machine, comprising a plurality of hydraulic work circuits for supplying actuators and/or drive units of movable machine parts with hydraulic fluid, and an emergency stop circuit for the work circuits for avoiding danger caused by the machine parts. According to this disclosure, the emergency stop circuit comprises a single safety valve which is connected in parallel to the work circuits via at least one branch line each at the inlet and to a pressure relief point at the outlet.Type: ApplicationFiled: October 20, 2016Publication date: February 9, 2017Inventors: Jan-Martin Veit, Wolf-Michael Petzold
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Patent number: 9551362Abstract: The invention relates to a hydraulic system, preferably for piloting and actuating a two-cylinder thick matter pump. The hydraulic system comprises a tank (68) for receiving hydraulic oil, a primary circuit having at least one hydraulic consumer (AH, MH) which has at least one primary pump (36, 38, 61, 70), which is loaded with hydraulic oil via a first suction line (42), and is connected on the outlet side to at least one first return line, and which has a suction/return filter (40) which communicates with the first suction line (42) on the outlet side and is loaded on the inlet side with return oil from the at least one return line. A special feature of the invention consists in that the first suction line (42) communicates with the tank (68) via a separate replenishing suction line (86) and a suction filter (66), wherein a replenishing suction valve (88) which is preloaded in the direction of the suction filter (66) is arranged in the replenishing suction line (86).Type: GrantFiled: August 15, 2012Date of Patent: January 24, 2017Assignee: Putzmeister Engineering GmbHInventors: Jan-Martin Veit, Markus Stass, Werner Muenzenmaier, Hans-Peter Renz
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Publication number: 20150096290Abstract: A hydraulic system, preferably for actuating and engaging a mobile slurry pump, includes a primary circuit, actuating a first hydraulic consumer, which circuit has a hydraulic drive assembly including at least one motor-driven hydraulic pump. The hydraulic system further includes a secondary circuit, actuating a second hydraulic consumer, which circuit has a second hydraulic drive assembly including at least one additional motor-driven hydraulic pump. In a first operating state, hydraulic oil from a common tank can be admitted to the hydraulic consumers arranged in the primary circuit and in the secondary circuit via the hydraulic drive assemblies thereof, independently of one another. In a second operating state, a portion of the hydraulic oil is supplied from the primary circuit to the secondary circuit to actuate the second consumer.Type: ApplicationFiled: March 20, 2013Publication date: April 9, 2015Applicant: Putzmeister Engineering GmbHInventors: Jan-Martin Veit, Werner Muenzenmaier
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Publication number: 20140230424Abstract: The invention relates to a hydraulic system, preferably for piloting and actuating a two-cylinder thick matter pump. The hydraulic system comprises a tank (68) for receiving hydraulic oil, a primary circuit having at least one hydraulic consumer (AH, MH) which has at least one primary pump (36, 38, 61, 70), which is loaded with hydraulic oil via a first suction line (42), and is connected on the outlet side to at least one first return line, and which has a suction/return filter (40) which communicates with the first suction line (42) on the outlet side and is loaded on the inlet side with return oil from the at least one return line. A special feature of the invention consists in that the first suction line (42) communicates with the tank (68) via a separate replenishing suction line (86) and a suction filter (66), wherein a replenishing suction valve (88) which is preloaded in the direction of the suction filter (66) is arranged in the replenishing suction line (86).Type: ApplicationFiled: August 15, 2012Publication date: August 21, 2014Applicant: PUTZMEISTER ENGINEERING GMBHInventors: Jan-Martin Veit, Markus Stass, Werner Muenzenmaier, Hans-Peter Renz