Patents by Inventor Erik Thorsell
Erik Thorsell 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: 20220287220Abstract: An attachment assembly for connecting an agricultural implement to a tractor. The attachment assembly comprises a tractor-side frame configured to extend from a rear of the tractor, and an implement-side frame configured to be removably attached to the implement. The implement-side frame is configured to rotate with respect to the tractor-side frame.Type: ApplicationFiled: May 28, 2022Publication date: September 15, 2022Inventor: Erik Thorsell
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Patent number: 11343954Abstract: An attachment assembly for connecting an agricultural implement to a tractor. The attachment assembly comprises a tractor-side frame configured to extend from a rear of the tractor, and an implement-side frame configured to be removably attached to the implement. The implement-side frame is configured to rotate with respect to the tractor-side frame.Type: GrantFiled: April 20, 2020Date of Patent: May 31, 2022Assignee: Great Plains Manufacturing, Inc.Inventor: Erik Thorsell
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Publication number: 20220090347Abstract: A multipurpopse bucket comprising a front section and a rear section rotatably coupled with the front section. As such, the bucket is configured to transition from a closed position to an open position. The bucket further comprises a single actuator configured to transition the bucket between the closed position and the open position. The actuator is centrally positioned with respect to a width of the bucket.Type: ApplicationFiled: September 20, 2021Publication date: March 24, 2022Inventor: Erik Thorsell
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Patent number: 10844883Abstract: A spacer assembly for restricting actuation of a hydraulic cylinder. The spacer assembly comprises a support bracket configured to be secured to the hydraulic cylinder. The spacer assembly additionally comprises a plurality of shims supported by the support bracket, whereby each of the shims is configured to be shifted between an unengaged position and an engaged position. When the shims are in the engaged position the shims are configured to restrict actuation of the hydraulic cylinder. The spacer assembly further comprises a shifting assembly configured to permit a group of at least two shims to be simultaneously shifted between the unengaged position and the engaged position.Type: GrantFiled: December 12, 2018Date of Patent: November 24, 2020Assignee: Great Plains Manufacturing, Inc.Inventor: Erik Thorsell
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Publication number: 20200329624Abstract: An attachment assembly for connecting an agricultural implement to a tractor. The attachment assembly comprises a tractor-side frame configured to extend from a rear of the tractor, and an implement-side frame configured to be removably attached to the implement. The implement-side frame is configured to rotate with respect to the tractor-side frame.Type: ApplicationFiled: April 20, 2020Publication date: October 22, 2020Inventor: Erik Thorsell
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Publication number: 20200191175Abstract: A spacer assembly for restricting actuation of a hydraulic cylinder. The spacer assembly comprises a support bracket configured to be secured to the hydraulic cylinder. The spacer assembly additionally comprises a plurality of shims supported by the support bracket, whereby each of the shims is configured to be shifted between an unengaged position and an engaged position. When the shims are in the engaged position the shims are configured to restrict actuation of the hydraulic cylinder. The spacer assembly further comprises a shifting assembly configured to permit a group of at least two shims to be simultaneously shifted between the unengaged position and the engaged position.Type: ApplicationFiled: December 12, 2018Publication date: June 18, 2020Inventor: Erik Thorsell
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Patent number: 10433481Abstract: A protection system for a rotary cutter, with the rotary cutter including a deck and one or more blade assemblies extending below the deck for cutting vegetation. The protection system comprises a protection annulus associated with one of the blade assemblies, with the protection annulus secured to a bottom surface of the deck and positioned between the deck and the blade assembly. The protection annulus has a width extending from an inner radius of the protection annulus to an outer radius of the protection annulus. The protection annulus has a height extending vertically downward from the bottom surface of the deck. The width of the protection annulus is greater than the height of the protection annulus.Type: GrantFiled: December 13, 2016Date of Patent: October 8, 2019Assignee: Great Plains Manufacturing, Inc.Inventors: Jeff Welsh, Erik Thorsell
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Patent number: 10130025Abstract: An agricultural implement for use with a tractor. The agricultural implement comprises a main body, a hitch, a plurality of wheel support assemblies, and a pair of wheels coupled to each of the wheel support assemblies. Each of the wheel support assemblies includes a longitudinal support assembly extending rearward from the main body. The wheel support assemblies further include a transverse support assembly coupled to the longitudinal support assembly, with each of the wheels of the pair of wheels being disposed on opposite sides of the transverse support assembly, and with the transverse support assembly being rotatable relative to the main body, such that raising one wheel of the pair of wheels causes the corresponding lowering of another wheel of the pair of wheels. The wheel support assemblies also include a rotational damping mechanism for restricting rotation of the transverse assembly and the pair of wheels relative to the main body.Type: GrantFiled: November 17, 2015Date of Patent: November 20, 2018Assignee: Great Plains Manufacturing, Inc.Inventors: Erik Thorsell, Rodney Hake
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Patent number: 10064330Abstract: A shield assembly for agricultural equipment. The agricultural equipment can include rotary-power distribution components for distributing rotary power through the agricultural equipment. The shield assembly comprises a sliding shield configured to be selectively positioned in a closed position and an open position. In the closed position the sliding shield is configured to cover at least a portion of the rotary-power distribution components of the agricultural equipment. In the open position the sliding shield is configured to provide access to at least a portion of the rotary-power distribution components of the agricultural equipment. The sliding shield is configured to shift from the closed position to the open position via substantially linear actuation.Type: GrantFiled: May 2, 2016Date of Patent: September 4, 2018Assignee: Great Plains Manufacturing, Inc.Inventor: Erik Thorsell
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Publication number: 20180160623Abstract: A protection system for a rotary cutter, with the rotary cutter including a deck and one or more blade assemblies extending below the deck for cutting vegetation. The protection system comprises a protection annulus associated with one of the blade assemblies, with the protection annulus secured to a bottom surface of the deck and positioned between the deck and the blade assembly. The protection annulus has a width extending from an inner radius of the protection annulus to an outer radius of the protection annulus. The protection annulus has a height extending vertically downward from the bottom surface of the deck. The width of the protection annulus is greater than the height of the protection annulus.Type: ApplicationFiled: December 13, 2016Publication date: June 14, 2018Inventors: Jeff Welsh, Erik Thorsell
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Publication number: 20160324068Abstract: A shield assembly for agricultural equipment. The agricultural equipment can include rotary-power distribution components for distributing rotary power through the agricultural equipment. The shield assembly comprises a sliding shield configured to be selectively positioned in a closed position and an open position. In the closed position the sliding shield is configured to cover at least a portion of the rotary-power distribution components of the agricultural equipment. In the open position the sliding shield is configured to provide access to at least a portion of the rotary-power distribution components of the agricultural equipment. The sliding shield is configured to shift from the closed position to the open position via substantially linear actuation.Type: ApplicationFiled: May 2, 2016Publication date: November 10, 2016Inventor: Erik Thorsell
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Publication number: 20160135354Abstract: An agricultural implement for use with a tractor. The agricultural implement comprises a main body, a hitch, a plurality of wheel support assemblies, and a pair of wheels coupled to each of the wheel support assemblies. Each of the wheel support assemblies includes a longitudinal support assembly extending rearward from the main body. The wheel support assemblies further include a transverse support assembly coupled to the longitudinal support assembly, with each of the wheels of the pair of wheels being disposed on opposite sides of the transverse support assembly, and with the transverse support assembly being rotatable relative to the main body, such that raising one wheel of the pair of wheels causes the corresponding lowering of another wheel of the pair of wheels. The wheel support assemblies also include a rotational damping mechanism for restricting rotation of the transverse assembly and the pair of wheels relative to the main body.Type: ApplicationFiled: November 17, 2015Publication date: May 19, 2016Inventors: Erik Thorsell, Rodney Hake
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Patent number: 6955241Abstract: The invention provides a speaker unit for low frequency reproduction wherein distortion is reduced and the orientation of a sound image of the lower side frequency region is augmented. To that end, the phase characteristic in an actually used frequency band is made substantially flat. The speaker unit includes a speaker enclosure, a duct formed in the speaker enclosure and having a port thereon, and a speaker mounted in the speaker enclosure. The speaker is formed such that it has a first resonance frequency set higher than a higher side frequency of the actually used frequency band (about 20 Hz to 100 Hz), while the port is formed such that it has a second resonance frequency set lower than a lower side frequency of the actually used frequency band.Type: GrantFiled: January 24, 2005Date of Patent: October 18, 2005Assignee: Alpine Electronics, Inc.Inventors: Erik Thorsell, Glenn Cass, Tetsuya Oishi
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Publication number: 20050145434Abstract: The invention provides a speaker unit for low frequency reproduction wherein distortion is reduced and the orientation of a sound image of the lower side frequency region is augmented. To that end, the phase characteristic in an actually used frequency band is made substantially flat. The speaker unit includes a speaker enclosure, a duct formed in the speaker enclosure and having a port thereon, and a speaker mounted in the speaker enclosure. The speaker is formed such that it has a first resonance frequency set higher than a higher side frequency of the actually used frequency band (about 20 Hz to 100 Hz), while the port is formed such that it has a second resonance frequency set lower than a lower side frequency of the actually used frequency band.Type: ApplicationFiled: January 24, 2005Publication date: July 7, 2005Inventors: Erik Thorsell, Glenn Cass, Tetsuya Oishi
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Patent number: 6912290Abstract: The invention provides a speaker unit for low frequency reproduction wherein distortion is reduced and the orientation of a sound image of the lower side frequency region is augmented. To that end, the phase characteristic in an actually used frequency band is made substantially flat. The speaker unit includes a speaker enclosure, a duct formed in the speaker enclosure and having a port thereon, and a speaker mounted in the speaker enclosure. The speaker is formed such that it has a first resonance frequency set higher than a higher side frequency of the actually used frequency band (about 20 Hz to 100 Hz), while the port is formed such that it has a second resonance frequency set lower than a lower side frequency of the used frequency band.Type: GrantFiled: November 16, 2000Date of Patent: June 28, 2005Assignee: Alpine Electronics, Inc.Inventors: Erik Thorsell, Glenn Cass, Tetsuya Oishi
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Patent number: 3973737Abstract: A pulp grinder comprises a grindstone having separate longitudinally spaced apart shafts mounted for rotation about a common axis and a grindstone structure mounted on the shafts. The grindstone structure includes a tubular shell having flanges at either end, and each shaft includes a flange that mates with a corresponding flange of the tubular shell. The flanges of the respective shafts are detachably connected to the flanges on the tubular shell, thereby facilitating removing the grindstone structure for repair or replacement without requiring disassembly of the shaft journals.Type: GrantFiled: May 14, 1974Date of Patent: August 10, 1976Assignee: Aktiebolaget Karlstads Mekaniska WerkstadInventors: Sven-Erik Thorsell, Lars Erik Karl Axel Tell