Patents by Inventor Eduard Heilig
Eduard Heilig 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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Publication number: 20230302681Abstract: An electric drive for a mixer drum, including a high-voltage DC voltage power supply to which at least one battery, a power converter and at least one external interface for connecting a stationary electric power supply are connected. The at least one battery is charged only via the at least one external interface, wherein a controller is configured to control flows of energy from and to components connected to the high-voltage DC voltage power supply.Type: ApplicationFiled: July 27, 2021Publication date: September 28, 2023Inventors: Eduard HEILIG, Udo BREHMER, Raphael ZOHNER
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Patent number: 11458650Abstract: A mixing drum drive includes first, second, and third rotational speed reduction stages, an electric motor having a length similar to its diameter, a component for fastening the electric motor, and a bearing by which a component for fastening a mixing drum is rotatable. A component with a gear of the first rotational speed reduction stage is configured to be driven by the electric motor and a further component with a gear of the first rotational speed reduction stage drives a component with a gear of the second rotational speed reduction stage. A further component with a gear of the second rotational speed reduction stage drives a component with a gear of the third rotational speed reduction stage and a further component with a gear of the third rotational speed reduction stage drives the component for fastening the mixing drum.Type: GrantFiled: August 9, 2018Date of Patent: October 4, 2022Assignee: ZF FRIEDRICHSHAFEN AGInventor: Eduard Heilig
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Publication number: 20220152871Abstract: The disclosure relates to a drive train for a mixer drum, wherein the drive train comprises a generator which outputs a first alternating voltage to a first converter. The first converter is connected to a high-voltage direct voltage network. A second converter is also provided which is connected to the high-voltage direct voltage network and which supplies an electric motor with a second alternating voltage in order to drive the mixer drum. The drive train also comprises a high-voltage battery which is connected to the high-voltage direct voltage network. Finally, a control unit is also provided which is connected to the first and second power converters or the battery and thus controls a flow of energy via the high-voltage direct voltage network.Type: ApplicationFiled: March 12, 2020Publication date: May 19, 2022Applicant: ZF Friedrichshafen AGInventors: Eduard Heilig, Udo Gillich, Marcel Liesel, David Wörzler, Raphael Zohner
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Publication number: 20200198182Abstract: A mixing drum drive includes first, second, and third rotational speed reduction stages, an electric motor having a length similar to its diameter, a component for fastening the electric motor, and a bearing by which a component for fastening a mixing drum is rotatable. A component with a gear of the first rotational speed reduction stage is configured to be driven by the electric motor and a further component with a gear of the first rotational speed reduction stage drives a component with a gear of the second rotational speed reduction stage. A further component with a gear of the second rotational speed reduction stage drives a component with a gear of the third rotational speed reduction stage and a further component with a gear of the third rotational speed reduction stage drives the component for fastening the mixing drum.Type: ApplicationFiled: August 9, 2018Publication date: June 25, 2020Inventor: Eduard Heilig
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Patent number: 8225707Abstract: To avoid having to strip down a radial piston engine (1) into its individual components when it is disassembled, a rotary cylinder (5) has a collar (19) on which the rotary cylinder is supported against the cam disk (2), the cam disk (2) being rotationally fixed in position to a housing portion (13).Type: GrantFiled: December 3, 2007Date of Patent: July 24, 2012Assignee: ZF Friedrichshafen AGInventor: Eduard Heilig
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Patent number: 7878699Abstract: A drive system for a mixer barrel for absorbing weight of the mixer barrel (1). The drive system communicates with a base (5) via a weight supporting element which supports the mixer barrel (1) and enables relative movement therebetween. The weight supporting element comprises at least one distortable elastic element (28, 29, 30, 39) enabling the movement between the drive system and the base (5). The at least one elastic element (28, 29, 30, 39) supports the weight of the mixer barrel (1) above the at least one elastic element (28, 29, 30, 39). The drive system (4) has at least one component (36) which limits movement of the drive system (4) and increases a distance between the drive system (4) and the base (5) such that a torque strain on the drive system (4) is braced by the base (5).Type: GrantFiled: August 8, 2005Date of Patent: February 1, 2011Assignee: ZF Friedrichshafen AGInventors: Klaus Schiffner, Andreas Geier, Eduard Heilig, Michael Frondorf
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Patent number: 7845843Abstract: A compensation device has one first component (5) and one second component (12) between which elastic elements (11, 15) are placed by way of which an angular discrepancy between a mixing drum and a bearing bracket is compensated in a truck mixer.Type: GrantFiled: June 7, 2006Date of Patent: December 7, 2010Assignee: ZF Friedrichshafen AGInventor: Eduard Heilig
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Patent number: 7832919Abstract: A gear for driving a drum of a ready-mix concrete truck comprises a driving motor (5) which drives an inner spider gear (7) of a planetary gear. An outer spider gear (16) forms the driven part and a bearing (11), by which the drum of the concrete truck is mounted, is disposed between a planetary gear (23) and the driving motor (5).Type: GrantFiled: August 8, 2005Date of Patent: November 16, 2010Assignee: ZF Friedrichshafen AGInventor: Eduard Heilig
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Publication number: 20100154743Abstract: In order to ensure that a radial piston engine (1) is not dismantled into the individual parts thereof during disassembly, a rotary cylinder (5) has a collar (19) on which the rotary cylinder is supported at the cam disk (2), wherein the cam disk (2) is connected to the housing (13) in such a way as to be torsion-proof and stationary.Type: ApplicationFiled: December 3, 2007Publication date: June 24, 2010Applicant: ZF FRIEDRICHSHAFEN AGInventor: Eduard Heilig
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Publication number: 20090034363Abstract: A drive for a barrel mixer having at least one elastic element (17) which is arranged between a base (5) and a drive system (4). The drive levels out relative displacement between the mixing drum (1) and the frame (2) of the vehicle. A number of components added to the drive are provided for absorbing and minimizing displacement of the drive system (4).Type: ApplicationFiled: August 8, 2005Publication date: February 5, 2009Applicant: ZF Friedrichshafen AGInventors: Michael Frondorf, Eduard Heilig, Andreas Geier, Klaus Schiffner
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Publication number: 20080318722Abstract: A gear for driving a drum of a ready-mix concrete truck comprises a driving motor (5) which drives an inner spider gear (7) of a planetary gear. An outer spider gear (16) forms the driven part and a bearing (11), by which the drum of the concrete truck is mounted, is disposed between a planetary gear (23) and the driving motor (5).Type: ApplicationFiled: August 8, 2005Publication date: December 25, 2008Applicant: ZF Friedrichshafen AGInventor: Eduard Heilig
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Publication number: 20080273416Abstract: A compensation device has one first component (5) and one second component (12) between which elastic elements (11, 15) are placed by way of which an angular discrepancy between a mixing drum and a bearing bracket is compensated in a truck mixer.Type: ApplicationFiled: June 7, 2006Publication date: November 6, 2008Applicant: ZF FRIEDRICHSHAFEN AGInventor: Eduard Heilig
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Patent number: 7331701Abstract: A drive for a mixing drum has a compensating device (25) for the purpose of compensating the motions between a drum (1) and a bearing bracket (4), which consists of a first component (20), an elastic element (17), and a second component (16).Type: GrantFiled: February 4, 2005Date of Patent: February 19, 2008Assignee: ZF Friedrichshafen AGInventors: Eduard Heilig, Andreas Geier, Klaus Schiffner, Michael Frondorf
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Publication number: 20060176133Abstract: A drive for a mixing drum has a compensating device (25) for the purpose of compensating the motions between a drum (1) and a bearing bracket (4), which consists of a first component (20), an elastic element (17), and a second component (16).Type: ApplicationFiled: February 4, 2005Publication date: August 10, 2006Inventors: Eduard Heilig, Andreas Geier, Klaus Schiffner, Michael Frondorf
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Patent number: 6505529Abstract: A reversing transmission shiftable under load in which the reversing clutches (1, 2) are automatically evacuated by the flow of pressure medium through the clutch (1, 2) not subjected to pressure wherein bores (9, 24), which in this shifting state, are connected to the oil reservoir (5) are placed at the highest point of the piston chamber. The shifting clutches (1, 2) are configured as negative clutches. For modulating the pressure during a reverse shift, an accumulator (27, 28) is provided from which pressure medium flows out via orifices (25, 29). For inching a valve (30) is provided via which the closed clutch (1, 2) can be subjected to a pressure whose level can be continuously varied.Type: GrantFiled: March 27, 2001Date of Patent: January 14, 2003Assignee: ZF Friedrichshafen AGInventors: Jürgen Legner, Eduard Heilig
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Patent number: 6432016Abstract: The driving device comprises a hydraulically shiftable friction coupling and a friction brake by means of which an input can be connected to a gear and which perform the function of a parking brake wherein an auxiliary release device comprising an adjustable accumulator piston and gear shift pistons interacting therewith separate friction coupling and friction brake thus interrupting the drive train; the accumulator cylinder of the auxiliary release device is connected to a supply tank via a connecting line and is provide with a blocking device which cuts off the connection to the supply tank when the auxiliary release device is actuated.Type: GrantFiled: October 18, 2000Date of Patent: August 13, 2002Assignee: ZF Friedrichshafen AGInventor: Eduard Heilig
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Patent number: 5918509Abstract: A powershift reversing transmission (1) having a hydrodynamic torque converter and at least two clutches (17, 18) for shifting to the forward and reverse driving directions. The clutches are designed as negative clutches. A reservoir (33), from which pressurized medium flows through an aperture (37), is provided to modulate the pressure when reversing the transmission. A throttle (39), with a variable cross section, is provided for inching. A back pressure may be applied to the clutches (17 or 18) through the throttle (39). This reversing transmission is particularly useful for driving lift trucks or as an entry unit for a multi-speed reversing transmission.Type: GrantFiled: October 2, 1997Date of Patent: July 6, 1999Assignee: ZF Friedrichshafen AGInventors: Eduard Heilig, Jurgen Legner, Egon Mann, Helmut Eymuller
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Patent number: 5839984Abstract: The invention relates to a drive system for a motor vehicle, in particular for a construction machine. A hydrostatic transmission unit comprising a variable displacement pump (25), a variable displacement motor (1) and a feed pump (26), is connected downstream of a diesel motor (24). In order to change gears in a powershiftable planetary transmission unit (2), gear-shift valves (34, 40) are provided. A brake (14) can be operated by a brake switching valve (30). The brake switching valve (30) is connected via line sections (33, 39) to the gearshift valves. When the brake switching valve (30) is in one switching position, a reservoir (37) is filled with hydraulic fluid. When in another switching position, a connection is made between the reservoir and a brake pressure chamber (20). During normal running of the machine, the reservoir is filled constantly with hydraulic fluid. When the brakes are operated, an adjustable residual pressure always acts on the brake. The brake is designed for dynamic deceleration.Type: GrantFiled: January 2, 1997Date of Patent: November 24, 1998Assignee: ZF Friedrichshafen AGInventors: Egon Mann, Helmut Eymuller, Eduard Heilig, Jurgen Legner
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Patent number: 5810691Abstract: The invention relates to a hydraulic changing device for a multi-ratio vehicle transmission, especially for a commercial vehicle such as a mobile excavator. The hydraulic changing device feeds gear actuator (3, 4) with pressure medium conveyed by a servopump (10). There is a control slide (26) which is acted upon by the effect of a control spring (33), on the one hand, and by a pressure in a low-pressure chamber (23), on the other. The low-pressure chamber (23) is coupled to a low-pressure pump (20) operating in dependence upon the engine speed. The arrangement is completed by a shuttle valve (6) and a leakage valve (5). The pressure prevailing in the low-pressure chamber (23) actuates the control slide (26), against the force of the control spring (23), in such a way that undesired changes from a higher to a lower gear are prevented. The hydraulic changing device, of the invention, is advantageously distinguished by its low structural and design expenditures.Type: GrantFiled: October 18, 1996Date of Patent: September 22, 1998Assignee: ZF Friedrichshafen AGInventors: Wolfgang Gebhard, Eduard Heilig
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Patent number: 5779586Abstract: A driving device, in particular for driving the wheels of a motor vehicle, is provided with a drive and a mechanical gear downstream thereof and two hydraulically shiftable friction clutches (3) or friction brakes (4) for connecting the drive with the gear and for carrying out the functions of a parking brake. The friction clutches (3) or friction brakes (4) are connected, by control pressure lines (27, 28), with auxiliary pistons (15, 16) cooperating therewith, and when the accumulator piston (7) is actuated by the gearshift pistons (15, 16), the volume of the accumulator piston (7) is supplied by the control pressure lines (27, 28) to the gearshift pistons (15, 16) in order to uncouple them.Type: GrantFiled: September 11, 1996Date of Patent: July 14, 1998Assignee: ZF Friedrichshafen AGInventors: Wolfgang Gebhard, Eduard Heilig