Patents by Inventor Thomas Steffan
Thomas Steffan 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: 10098271Abstract: A method includes converting a single input flow into two output flows. The method further includes sequencing the output flows to completely raise a machine prior to folding of wings associated with the machine.Type: GrantFiled: August 11, 2015Date of Patent: October 16, 2018Assignee: Unverferth Manufacturing Co., Inc.Inventors: Thomas Steffan, John Garberson
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Patent number: 9581202Abstract: A tilling implement for use with a farm vehicle includes a frame, a tilling element attached to the frame, a bearing assembly configured to allow the tilling element to rotate relative to the frame. The bearing assembly can include a first race, a second race spaced apart from the first race to define a gap therebetween, a bearing rotatably disposed within the gap to allow relative movement between the first race and the second race, a seal including a flexible protrusion having a distal end that presses against the first race to seal off the gap, and a stop positioned adjacent to the flexible protrusion configured to prevent the distal end of the protrusion from bending towards the bearing.Type: GrantFiled: November 30, 2015Date of Patent: February 28, 2017Assignee: Unverferth Manufacturing Company, Inc.Inventors: David R. Smith, Thomas Steffan, Shawn Gerdeman
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Publication number: 20170049037Abstract: A farm implement for tilling soil including a frame having a transverse axis. The farm implement includes a plurality of ground engaging tools coupled to the frame extending parallel to the transverse axis. At least one of the plurality of ground engaging tools includes a roller having a solid outer surface.Type: ApplicationFiled: August 17, 2016Publication date: February 23, 2017Applicant: Unverferth Manufacturing Co., Inc.Inventors: Michael J. HILVERS, Thomas STEFFAN, Shawn W. GERDEMAN
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Publication number: 20170049038Abstract: A farm implement for tilling soil includes a frame having a transverse axis. The farm implement further includes at least one first ground engaging tool coupled to the frame and having a first tool axis oriented within a range of from parallel to the transverse axis to about 30 degrees of the transverse axis and at least one first finishing tool coupled to the frame adjacent to the first ground engaging tool, and having an axis generally aligned with or substantially parallel to the first tool axis. The at least one first finishing tool is configured to control a ground working depth of the at least one first ground engaging tool.Type: ApplicationFiled: August 17, 2016Publication date: February 23, 2017Applicant: UNVERFERTH MANUFACTURING COMPANY, INC.Inventors: Michael J. Hilvers, David R. SMITH, Thomas STEFFAN, Shawn W. GERDEMAN
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Patent number: 9554500Abstract: The present application discloses an improvement to hydraulically operated wing lift wheels used in tillage equipment. According to embodiments of the present invention, a hydraulic lockout mechanism is provided that uses gravity to rotate a weighted latch into a position that prevents full retraction of a hydraulic cylinder when in a certain orientation. When in other orientations, the weighted latch is in a position that allows the hydraulic cylinder to fully retract.Type: GrantFiled: August 27, 2008Date of Patent: January 31, 2017Assignee: Unverferth Manufacturing Company, Inc.Inventors: David Smith, Thomas Steffan
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Publication number: 20160160926Abstract: A tilling implement for use with a farm vehicle includes a frame, a tilling element attached to the frame, a bearing assembly configured to allow the tilling element to rotate relative to the frame. The bearing assembly can include a first race, a second race spaced apart from the first race to define a gap therebetween, a bearing rotatably disposed within the gap to allow relative movement between the first race and the second race, a seal including a flexible protrusion having a distal end that presses against the first race to seal off the gap, and a stop positioned adjacent to the flexible protrusion configured to prevent the distal end of the protrusion from bending towards the bearing.Type: ApplicationFiled: November 30, 2015Publication date: June 9, 2016Applicant: Unverferth Manufacturing Company, Inc.Inventors: David R. SMITH, Thomas STEFFAN, Shawn GERDEMAN
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Patent number: 9316260Abstract: A tilling implement for use with a farm vehicle includes a frame, a tilling element attached to the frame, a bearing assembly configured to allow the tilling element to rotate relative to the frame. The bearing assembly can include a first race, a second race spaced apart from the first race to define a gap therebetween, a bearing rotatably disposed within the gap to allow relative movement between the first race and the second race, a seal including a flexible protrusion having a distal end that presses against the first race to seal off the gap, and a stop positioned adjacent to the flexible protrusion configured to prevent the distal end of the protrusion from bending towards the bearing.Type: GrantFiled: March 15, 2013Date of Patent: April 19, 2016Assignee: Unverferth Manufacturing Company, Inc.Inventors: David R. Smith, Thomas Steffan, Shawn Gerdeman
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Publication number: 20160081260Abstract: A method includes converting a single input flow into two output flows.Type: ApplicationFiled: August 11, 2015Publication date: March 24, 2016Applicant: UNVERFERTH MANUFACTURING CO., INC.Inventors: Thomas STEFFAN, John GARBERSON
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Publication number: 20140262383Abstract: A tilling implement for use with a farm vehicle includes a frame, a tilling element attached to the frame, a bearing assembly configured to allow the tilling element to rotate relative to the frame. The bearing assembly can include a first race, a second race spaced apart from the first race to define a gap therebetween, a bearing rotatably disposed within the gap to allow relative movement between the first race and the second race, a seal including a flexible protrusion having a distal end that presses against the first race to seal off the gap, and a stop positioned adjacent to the flexible protrusion configured to prevent the distal end of the protrusion from bending towards the bearing.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: David R. Smith, Thomas Steffan, Shawn Gerdeman
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Publication number: 20100051302Abstract: The present application discloses an improvement to hydraulically operated wing lift wheels used in tillage equipment. According to embodiments of the present invention, a hydraulic lockout mechanism is provided that uses gravity to rotate a weighted latch into a position that prevents full retraction of a hydraulic cylinder when in a certain orientation. When in other orientations, the weighted latch is in a position that allows the hydraulic cylinder to fully retract.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Applicant: Unverferth Manufacturing Company, Inc.Inventors: Thomas Steffan, David Smith