Patents by Inventor Donald Tvetene
Donald Tvetene 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: 8118154Abstract: A sod handling method and a sod handling apparatus, in one embodiment the sod handling apparatus uses a pressure differential to hold a sod slab during sod transfer, other embodiments include a sod lift member for lifting sod, a sod transport mechanism for moving sod; a sod carriage for transporting sod, a sod bed positioning system for stacking sod, a system and method for checking sod quality as well as an apparatus and method of machine stacking sod to maintain the integrity of a sod stack.Type: GrantFiled: April 7, 2010Date of Patent: February 21, 2012Assignee: Trebro Holding, Inc.Inventors: Michael Tvetene, Donald Tvetene, Gregg Tvetene
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Publication number: 20100187071Abstract: A sod handling method and a sod handling apparatus, in one embodiment the sod handling apparatus uses a pressure differential to hold a sod slab during sod transfer, other embodiments include a sod lift member for lifting sod, a sod transport mechanism for moving sod; a sod carriage for transporting sod, a sod bed positioning system for stacking sod, a system and method for checking sod quality as well as an apparatus and method of machine stacking sod to maintain the integrity of a sod stack.Type: ApplicationFiled: April 7, 2010Publication date: July 29, 2010Applicant: TREBRO HOLDING, INC.Inventors: Michael Tvetene, Donald Tvetene, Gregg Tvetene
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Patent number: 7641437Abstract: An apparatus and method for transferring sod slabs in an unrolled condition including a retractable bed for allowing a sod slab to fall under the influence of gravity from one sod bed to another sod bed with a further sod bed to allow a sod pickup mechanism to place and remove sod slabs thereon from different directions.Type: GrantFiled: October 4, 2005Date of Patent: January 5, 2010Assignee: Trebro Holding, Inc.Inventors: Michael Tvetene, Donald Tvetene, Gregg Tvetene
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Publication number: 20060102363Abstract: A sod handling method and a sod handling apparatus, in one embodiment the sod handling apparatus uses a pressure differential to hold a sod slab during sod transfer, other embodiments include a sod lift member for lifting sod, a sod transport mechanism for moving sod; a sod carriage for transporting sod, a sod bed positioning system for stacking sod, a system and method for checking sod quality as well as an apparatus and method of machine stacking sod to maintain the integrity of a sod stack.Type: ApplicationFiled: March 30, 2005Publication date: May 18, 2006Inventors: Michael Tvetene, Donald Tvetene, Gregg Tvetene
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Publication number: 20050058527Abstract: A towable sod stacker having a pallet holder for holding a stack of sod, a conveyor for receiving and temporarily storing a plurality of cut sod slabs and a sod pickup and transport mechanism for lifting the plurality of cut sod sections from the conveyor and vertically placing the sod slabs in any of four positions on the pallet to provide an alternately stacked pallet of sod slabs with the towable stacker conveyor laterally displaceable to permit an operator to on-the-go dump a spoiled sod slab from the conveyorType: ApplicationFiled: August 18, 2004Publication date: March 17, 2005Inventors: Theodore Tvetene, Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Patent number: 6783318Abstract: A towable sod stacker having a pallet holder for holding a stack of sod, a conveyor for receiving and temporarily storing a plurality of cut sod slabs and a sod pickup mechanism for lifting the plurality of cut sod sections from the conveyor and vertically placing the sod slabs in any of four positions on the pallet to provide an alternately stacked pallet of sod slabs with the towable stacker conveyor laterally displaceable to permit an operator to on-the-go dump a spoiled sod slab from the conveyor.Type: GrantFiled: August 22, 2002Date of Patent: August 31, 2004Inventors: Theodore Tvetene, Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Publication number: 20040037683Abstract: A towable sod stacker having a pallet holder for holding a stack of sod, a conveyor for receiving and temporarily storing a plurality of cut sod slabs and a sod pickup mechanism for lifting the plurality of cut sod sections from the conveyor and vertically placing the sod slabs in any of four positions on the pallet to provide an alternately stacked pallet of sod slabs with the towable stacker conveyor laterally displaceable to permit an operator to on-the-go dump a spoiled sod slab from the conveyorType: ApplicationFiled: August 22, 2002Publication date: February 26, 2004Inventors: Theodore Tvetene, Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Patent number: 6681864Abstract: A method the method of transferring a roll of sod while inhibiting an unwinding of the roll of sod comprising the steps of: (a) rolling a slab of sod into a first sod roll; (b) forcing the first sod roll onto a sod roll handling mechanism containing a second sod roll with the first sod roll forming pressure contact with the second sod roll on the sod roll handling mechanism; and (c) advancing the sod roll handling mechanism with the second sod roll while maintaining the first sod roll and the second sod roll in pressure contact to thereby inhibit the unwinding of the first sod roll as the first sod roll is transferred to the handling mechanism and an sod harvester guidance system for maintaining a full cut.Type: GrantFiled: December 11, 2001Date of Patent: January 27, 2004Inventors: Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Publication number: 20020043375Abstract: A method the method of transferring a roll of sod while inhibiting an unwinding of the roll of sod comprising the steps of: (a) rolling a slab of sod into a first sod roll; (b) forcing the first sod roll onto a sod roll handling mechanism containing a second sod roll with the first sod roll forming pressure contact with the second sod roll on the sod roll handling mechanism; and (c) advancing the sod roll handling mechanism with the second sod roll while maintaining the first sod roll and the second sod roll in pressure contact to thereby inhibit the unwinding of the first sod roll as the first sod roll is transferred to the handling mechanism and an sod harvester guidance system for maintaining a full cut.Type: ApplicationFiled: December 11, 2001Publication date: April 18, 2002Inventors: Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Patent number: 6364027Abstract: A method the method of transferring a roll of sod while inhibiting an unwinding of the roll of sod comprising the steps of: (a) rolling a slab of sod into a first sod roll; (b) forcing the first sod roll onto a sod roll handling mechanism containing a second sod roll with the first sod roll forming pressure contact with the second sod roll on the sod roll handling mechanism; and (c) advancing the sod roll handling mechanism with the second sod roll while maintaining the first sod roll and the second sod roll in pressure contact to thereby inhibit the unwinding of the first sod roll as the first sod roll is transferred to the handling mechanism and an sod harvester guidance system for maintaining a full cut.Type: GrantFiled: June 26, 2000Date of Patent: April 2, 2002Inventors: Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Patent number: 6296063Abstract: A method and an automatic sod harvester for on-the-go cutting, rolling and storing of sod with the sod harvester including a sod cutter for freeing a section of sod from a sod field, a sod roller for rolling the section of sod into a sod roll, a sod roll accumulator having a sod troughs therein for receiving and holding a plurality of sod rolls therein and a sod roll pickup mechanism for lifting the sod rolls on the sod roll accumulator and transferring the sod rolls to a sod carrier for delivery of the sod rolls to a remote location.Type: GrantFiled: January 25, 1999Date of Patent: October 2, 2001Inventors: Donald Tvetene, Michael Tvetene, Gregg Tvetene
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Patent number: 6050367Abstract: A load stabilizing bi-directional vehicle having a steerable front and a steerable rear wheel and a pair of lateral wheels for maintaining the balance of the bi-directional vehicle.Type: GrantFiled: June 22, 1998Date of Patent: April 18, 2000Inventors: Theodore Tvetene, Donald Tvetene, Michael Tvetene, Gregg Tvetene