Patents by Inventor Martin Kunigk
Martin Kunigk 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: 20230399816Abstract: The present invention pertains to a method for estimating a payload of a hydraulic mining shovel comprising an attachment having a bucket and at least one hydraulic cylinder. The method comprising the steps of determining a current position of the bucket, measuring a cylinder pressure and an angular attachment acceleration, estimating a dynamic cylinder pressure based on the angular attachment acceleration, calculating an estimated static cylinder pressure and retrieving a payload estimation. The present invention also pertains to a hydraulic mining shovel comprising a system being configured to carry out such method.Type: ApplicationFiled: October 19, 2021Publication date: December 14, 2023Applicant: Caterpillar Global Mining LLCInventors: Sharath CUGATI, Martin KUNIGK, Arthur CESARZ
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Patent number: 10323385Abstract: A hydraulic actuator is disclosed. The hydraulic actuator may have a cylinder barrel. The hydraulic actuator may also have a piston rod reciprocally received by the cylinder barrel. The piston rod may have at least one first piston rod end extending out of the cylinder barrel. The hydraulic actuator may further have an intermediate element attached to the at least one first piston rod end by a first set of screws extending in a first direction. In addition, the hydraulic actuator may have a connecting element attached to the intermediate element by a second set of screws extending in a second direction opposite to the first direction.Type: GrantFiled: March 7, 2014Date of Patent: June 18, 2019Assignee: Caterpillar Global Mining HMS GmbHInventor: Martin Kunigk
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Patent number: 10132352Abstract: A system for lubricating a pivot joint including a first bushing and a second bushing and a pin disposed coaxially within a cylinder clevis, the pin having a first groove and a second groove on a first side, and third grooves on a second side and a bore along a length of the pin from first side to the second side. The first groove is used for mounting a seal. The second groove and the third grooves provide transmission of a lubricant to the first bushing and the second bushing respectively. A first cover plate and a second cover plate are fastened to the cylinder clevis using a plurality of fasteners. The first cover plate includes a first port and a second port for providing the lubricant to the first bushing and the second bushing respectively. A spring is provided between the second cover plate and the pin.Type: GrantFiled: December 1, 2015Date of Patent: November 20, 2018Assignee: Caterpillar Global Mining LLCInventors: Elvis Tormen, Martin Kunigk
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Patent number: 9784292Abstract: A pin assembly for a piston block of a hydraulic cylinder includes a pin that is axially engaged with the piston block. The pin assembly also includes a floating bush that is spaced apart from the pin to receive a sleeve therebetween. The floating bush is also configured to exhibit axial and radial play in its movement relative to the sleeve. The axial and radial play in the movement of the floating bush allows the floating bush to align with a cap port of the cylinder housing prior to entering the cap port of the cylinder housing.Type: GrantFiled: August 30, 2016Date of Patent: October 10, 2017Assignee: Caterpillar Inc.Inventor: Martin Kunigk
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Publication number: 20170167114Abstract: A hydraulic valve block configured to specifically control an operation of a clam actuator of a face shovel bucket of a face shovel machine is disclosed. The hydraulic valve block comprises a first inlet, a second inlet, a first outlet connected to the first inlet via a first line and a second outlet connected to the second inlet via a second line. The hydraulic valve block further comprises a two port two position directional control valve interconnected between the first line and the second line, a first pressure relief valve interconnected between the first line and the second line and arranged in series with the two port two position directional control valve, and a second pressure relief valve interconnected between the first line and the second line and arranged in parallel to the first pressure relief valve and the two port two position directional control valve.Type: ApplicationFiled: December 7, 2016Publication date: June 15, 2017Applicant: Caterpillar Global Mining LLCInventors: Karla Winkel, Martin Kunigk, Heinz Otto
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Publication number: 20160084297Abstract: A system for lubricating a pivot joint including a first bushing and a second bushing and a pin disposed coaxially within a cylinder clevis, the pin having a first groove and a second groove on a first side, and third grooves on a second side and a bore along a length of the pin from first side to the second side. The first groove is used for mounting a seal. The second groove and the third grooves provide transmission of a lubricant to the first bushing and the second bushing respectively. A first cover plate and a second cover plate are fastened to the cylinder clevis using a plurality of fasteners. The first cover plate includes a first port and a second port for providing the lubricant to the first bushing and the second bushing respectively. A spring is provided between the second cover plate and the pin.Type: ApplicationFiled: December 1, 2015Publication date: March 24, 2016Applicant: Caterpillar Global Mining LLCInventors: Elvis Tormen, Martin Kunigk
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Publication number: 20160024756Abstract: A hydraulic actuator is disclosed. The hydraulic actuator may have a cylinder barrel. The hydraulic actuator may also have a piston rod reciprocally received by the cylinder barrel. The piston rod may have at least one first piston rod end extending out of the cylinder barrel. The hydraulic actuator may further have an intermediate element attached to the at least one first piston rod end by a first set of screws extending in a first direction. In addition, the hydraulic actuator may have a connecting element attached to the intermediate element by a second set of screws extending in a second direction opposite to the first direction.Type: ApplicationFiled: March 7, 2014Publication date: January 28, 2016Applicant: Caterpillar Global Mining LLCInventor: Martin KUNIGK
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Patent number: 9216782Abstract: A tracked running gear includes a drive sprocket having two sides and laterally projecting tooth profiles on both sides; a guide wheel, at least one track roller, at least one support roller, and an endless chain formed by ground plates interconnected in an articulated manner. The ground plates have vertically extending parallel teeth which engage the tooth profiles on both sides of the drive sprocket as the ground plates are diverted around the drive sprocket. The ground plates also include a first running surface having a substantially rectilinear form between the teeth for engaging the track roller and support roller, and second running surfaces having a curved form and arranged on opposite sides of the first running surface and between the teeth for engagement with the guide wheel and the drive sprocket.Type: GrantFiled: February 22, 2012Date of Patent: December 22, 2015Assignee: Caterpillar Global Mining HMS GmbHInventor: Martin Kunigk
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Publication number: 20130342006Abstract: A tracked running gear includes a drive sprocket having two sides and laterally projecting tooth profiles on both sides; a guide wheel, at least one track roller, at least one support roller, and an endless chain formed by ground plates interconnected in an articulated manner. The ground plates have vertically extending parallel teeth which engage the tooth profiles on both sides of the drive sprocket as the ground plates are diverted around the drive sprocket. The ground plates also include a first running surface having a substantially rectilinear form between the teeth for engaging the track roller and support roller, and second running surfaces having a curved form and arranged on opposite sides of the first running surface and between the teeth for engagement with the guide wheel and the drive sprocket.Type: ApplicationFiled: February 22, 2012Publication date: December 26, 2013Inventor: Martin Kunigk