Patents by Inventor Kristofor Lee Dahl
Kristofor Lee Dahl 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: 8571774Abstract: One disclosed embodiment relates to a propulsion system for a machine. The propulsion system may include a prime mover operatively connected through a continuously variable transmission to a propulsion device. The propulsion system may also include propulsion-system controls that control an operating parameter of the continuously variable transmission, which may include adjusting the operating parameter based on operator input. Controlling the operating parameter may also include determining an adjustment limit for the operating parameter based on one or more operating conditions and applying the adjustment limit to the operating parameter to modify at least one of acceleration and jerk of the machine based on the one or more operating conditions.Type: GrantFiled: November 26, 2012Date of Patent: October 29, 2013Assignee: Caterpillar Inc.Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, Jr., Benjamin B. Schmuck, Alberto Martinez, Jr., Yaang Zhao
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Patent number: 8352138Abstract: A continuously variable transmission is provided having a driven element. The continuously variable transmission also has a first operator input device configured to transmit a first displacement signal corresponding to a displacement of the first operator input device. The continuously variable transmission further has a second operator input device configured to transmit a second displacement signal corresponding to a displacement of the second operator input device. In addition, the continuously variable transmission has a third operator input device configured to transmit a transmission operating mode request. Furthermore, the continuously variable transmission has at least one sensor configured to sense at least one parameter indicative of an operating condition of the transmission.Type: GrantFiled: November 30, 2007Date of Patent: January 8, 2013Assignee: Caterpillar Inc.Inventors: Kristofor Lee Dahl, Richard George Ingram, Michael Anthony Spielman, Jr., Alberto Martinez, Jr., Yaang Zhao, Ellen Jean Hoffman
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Patent number: 8321105Abstract: One disclosed embodiment relates to a propulsion system for a machine. The propulsion system may include a prime mover operatively connected through a continuously variable transmission to a propulsion device. The propulsion system may also include propulsion-system controls that control an operating parameter of the continuously variable transmission, which may include adjusting the operating parameter based on operator input. Controlling the operating parameter may also include determining an adjustment limit for the operating parameter based on one or more operating conditions and applying the adjustment limit to the operating parameter to modify at least one of acceleration and jerk of the machine based on the one or more operating conditions.Type: GrantFiled: October 31, 2007Date of Patent: November 27, 2012Assignee: Caterpillar Inc.Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, Jr., Benjamin B. Schmuck, Alberto Martinez, Jr., Yaang Zhao
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Patent number: 8216109Abstract: A continuously variable transmission is provided having a driven element. The continuously variable transmission also has at least one operator input device configured to transmit a transmission operating mode request and at least one other operator input device configured to transmit a driven element output request. In addition, the continuously variable transmission has at least one sensor configured to sense at least one parameter indicative of an operating condition of the transmission. The continuously variable transmission further has a controller configured to regulate an output of the driven element in response to the operating mode request, the driven element output request, and the at least one sensed parameter indicative of an operating condition of the transmission.Type: GrantFiled: September 28, 2007Date of Patent: July 10, 2012Assignee: Caterpillar Inc.Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, Jr., Benjamin B. Schmuck, Alberto Martinez, Jr., Yaang Zhao
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Publication number: 20090143948Abstract: A continuously variable transmission is provided having a driven element. The continuously variable transmission also has a first operator input device configured to transmit a first displacement signal corresponding to a displacement of the first operator input device. The continuously variable transmission further has a second operator input device configured to transmit a second displacement signal corresponding to a displacement of the second operator input device. In addition, the continuously variable transmission has a third operator input device configured to transmit a transmission operating mode request. Furthermore, the continuously variable transmission has at least one sensor configured to sense at least one parameter indicative of an operating condition of the transmission.Type: ApplicationFiled: November 30, 2007Publication date: June 4, 2009Inventors: Kristofor Lee Dahl, Richard George Ingram, Michael Anthony Spielman, JR., Alberto Martinez, JR., Yaang Zhao, Ellen Jean Hoffman
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Publication number: 20090112424Abstract: One disclosed embodiment relates to a propulsion system for a machine. The propulsion system may include a prime mover operatively connected through a continuously variable transmission to a propulsion device. The propulsion system may also include propulsion-system controls that control an operating parameter of the continuously variable transmission, which may include adjusting the operating parameter based on operator input. Controlling the operating parameter may also include determining an adjustment limit for the operating parameter based on one or more operating conditions and applying the adjustment limit to the operating parameter to modify at least one of acceleration and jerk of the machine based on the one or more operating conditions.Type: ApplicationFiled: October 31, 2007Publication date: April 30, 2009Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, JR., Benjamin B. Schmuck, Alberto Martinez, JR., Yaang Zhao
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Publication number: 20090088295Abstract: A continuously variable transmission is provided having a driven element. The continuously variable transmission also has at least one operator input device configured to transmit a transmission operating mode request and at least one other operator input device configured to transmit a driven element output request. In addition, the continuously variable transmission has at least one sensor configured to sense at least one parameter indicative of an operating condition of the transmission. The continuously variable transmission further has a controller configured to regulate an output of the driven element in response to the operating mode request, the driven element output request, and the at least one sensed parameter indicative of an operating condition of the transmission.Type: ApplicationFiled: September 28, 2007Publication date: April 2, 2009Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, JR., Benjamin B. Schmuck, Alberto Martinez, JR., Yaang Zhao
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Patent number: 7276669Abstract: A work machine may have a payload overload control system. The system may include a payload carrier and a lift mechanism configured to raise and lower the payload carrier. The system may further include a payload monitor configured to determine a payload in the payload carrier. The system may also include a controller configured to compare the determined payload with a predetermined maximum payload and to selectively control lift of the payload carrier by the lift mechanism based on the comparison between the determined payload and the predetermined maximum payload.Type: GrantFiled: October 6, 2004Date of Patent: October 2, 2007Assignee: Caterpillar Inc.Inventors: Kristofor Lee Dahl, Eric Wade Cler, Wei Li, Randy G. Aneloski
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Patent number: 6935678Abstract: A reinforced payload container may include a panel forming at least one of a floor, a sidewall, and a front wall. A first plurality of ribs may be attached to the panel and may include a first free edge and a first panel edge. A second plurality of ribs may also be attached to the panel and may intersect with the first plurality of ribs. The second plurality of ribs may include a second free edge and a second panel edge. The first plurality of ribs may include first rib slots along the first free edge, and the second plurality of ribs may include second rib slots along the second panel edge. The first rib slots and the second rib slots may be aligned so that the first rib slots receive the second ribs and the second rib slots receive the first ribs.Type: GrantFiled: May 17, 2004Date of Patent: August 30, 2005Assignee: Caterpillar IncInventors: Christopher Scott Laban, Kristofor Lee Dahl, Terry Allen Coins, Edward Patrick Ormiston, Clifford Eugene Miller, Christopher Charles Cusack, Timothy James Bromenshenkel, Thomas Edmund Fennell, Stephan Bushong, Howard Roy Franklin