Patents by Inventor Nathan L. Schlueter
Nathan L. Schlueter 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: 11174678Abstract: Embodiments include a telescoping ladder with a plurality of columns and rungs. The ladder can have a plurality of locking assemblies for locking adjacent columns to a rung thereby restricting relative sliding motion between adjacent columns. The locking assembly can have a locking button positionable against the rung front surface and rotatable with respect thereto between a locked position and an unlocked position. The locking assembly can have a locking pin positioned within the rung and slidable between an extended position and a retracted position along a locking pin axis generally perpendicular to the rotational axis. The locking assembly can have a connector pin extending in a direction parallel to the rotational axis, for connecting the locking button to the locking pin such that rotation of the locking button about the rotational axis slides the locking pin about the locking pin axis.Type: GrantFiled: November 5, 2018Date of Patent: November 16, 2021Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Nathan L. Schlueter
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Patent number: 10995547Abstract: A telescoping ladder is provided, that includes a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion between a fully-extended position and a collapsed position. The columns are connected to rungs by way of connector assemblies. Each connector assembly has a locking pin moveable between an extended position or a retracted position for extending into or retracting out of openings of adjacent columns to selectively lock or release the columns respectively. The telescoping ladder includes a plurality of actuators that permit collapsing the ladder in a sequential manner, the sequence involving collapsing the columns on a lower portion of the ladder prior to collapsing columns immediately thereabove.Type: GrantFiled: February 28, 2017Date of Patent: May 4, 2021Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Nathan L. Schlueter
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Patent number: 10753149Abstract: An extendable/retractable ladder assembly includes a first stile and a second stile and a plurality of rungs extending therebetween. Each stile may comprise a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion. A connector assembly connects the rungs to respective columns in the first and second stiles. The ladder has improved manufacturability since connector assemblies may be assembled before connecting the rungs to respective columns. The standing surface of the rungs may be angled such that it is rotated towards horizontal when the ladder assembly is leaned against a wall. A latch assembly may be used to selectively lock relative axial movement between adjacent columns. The latch assembly includes a locking pin assembly comprised of a central post and an outer metal sleeve. An air damper may also be used to control airflow through the columns.Type: GrantFiled: July 20, 2018Date of Patent: August 25, 2020Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Patent number: 10731413Abstract: A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a locking pin to lock the first and second ladder portions at an angular position. Each rung is connected to a column by a connector assembly having first and second release buttons.Type: GrantFiled: November 29, 2018Date of Patent: August 4, 2020Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell
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Publication number: 20200113730Abstract: A retainer with a closure mechanism not removable from the retainer is bonded to each of the air inlet openings of an inflatable convective thermal blanket. The bottom surface of the retainer is bonded to the blanket so that its orifice is in alignment with the opening into the blanket. The closure may be a flexible layer or sheet that is adhesively attached to the top surface of the retainer. An end portion of the flexible layer away from the orifice of the retainer may be press or die cut into the retainer so that the flexible layer is non-removably attached to the retainer when the user peels the releasably secured portion of the flexible layer away from the retainer to expose the air inlet opening. The closure can also be an extension of the retainer that is hingedly connected to the retainer so as to be able to be moved pivotally to cover the retainer. The closure has a configuration that allows it to be releasably secured to the retainer when it covers the orifice opening of the retainer.Type: ApplicationFiled: September 27, 2019Publication date: April 16, 2020Applicant: SMITHS MEDICAL ASD, INC.Inventors: Gretchen Benkendorf, Christopher Allen Lacy, Ben Peterson, Nathan L. Schlueter
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Publication number: 20190136623Abstract: Embodiments include a telescoping ladder with a plurality of columns and rungs. The ladder can have a plurality of locking assemblies for locking adjacent columns to a rung thereby restricting relative sliding motion between adjacent columns. The locking assembly can have a locking button positionable against the rung front surface and rotatable with respect thereto between a locked position and an unlocked position. The locking assembly can have a locking pin positioned within the rung and slidable between an extended position and a retracted position along a locking pin axis generally perpendicular to the rotational axis. The locking assembly can have a connector pin extending in a direction parallel to the rotational axis, for connecting the locking button to the locking pin such that rotation of the locking button about the rotational axis slides the locking pin about the locking pin axis.Type: ApplicationFiled: November 5, 2018Publication date: May 9, 2019Inventors: Mitchell I. Kieffer, Nathan L. Schlueter
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Publication number: 20190093428Abstract: A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a locking pin to lock the first and second ladder portions at an angular position. Each rung is connected to a column by a connector assembly having first and second release buttons.Type: ApplicationFiled: November 29, 2018Publication date: March 28, 2019Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell
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Patent number: 10233692Abstract: A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a locking pin to lock the first and second ladder portions at an angular position. Each rung is connected to a column by a connector assembly having first and second release buttons.Type: GrantFiled: February 9, 2017Date of Patent: March 19, 2019Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell
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Publication number: 20190055783Abstract: A telescoping ladder is provided, that includes a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion between a fully-extended position and a collapsed position. The columns are connected to rungs by way of connector assemblies. Each connector assembly has a locking pin moveable between an extended position or a retracted position for extending into or retracting out of openings of adjacent columns to selectively lock or release the columns respectively. The telescoping ladder includes a plurality of actuators that permit collapsing the ladder in a sequential manner, the sequence involving collapsing the columns on a lower portion of the ladder prior to collapsing columns immediately thereabove.Type: ApplicationFiled: February 28, 2017Publication date: February 21, 2019Inventors: Mitchell I. Kieffer, Nathan L. Schlueter
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Patent number: 10053912Abstract: An extendable/retractable ladder assembly includes a first stile and a second stile and a plurality of rungs extending therebetween. Each stile may comprise a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion. A connector assembly connects the rungs to respective columns in the first and second stiles. The ladder has improved manufacturability since connector assemblies may be assembled before connecting the rungs to respective columns. The standing surface of the rungs may be angled such that it is rotated towards horizontal when the ladder assembly is leaned against a wall. A latch assembly may be used to selectively lock relative axial movement between adjacent columns. The latch assembly includes a locking pin assembly comprised of a central post and an outer metal sleeve. An air damper may also be used to control airflow through the columns.Type: GrantFiled: September 22, 2017Date of Patent: August 21, 2018Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Publication number: 20180010388Abstract: An extendable/retractable ladder assembly includes a first stile and a second stile and a plurality of rungs extending therebetween. Each stile may comprise a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion. A connector assembly connects the rungs to respective columns in the first and second stiles. The ladder has improved manufacturability since connector assemblies may be assembled before connecting the rungs to respective columns. The standing surface of the rungs may be angled such that it is rotated towards horizontal when the ladder assembly is leaned against a wall. A latch assembly may be used to selectively lock relative axial movement between adjacent columns. The latch assembly includes a locking pin assembly comprised of a central post and an outer metal sleeve. An air damper may also be used to control airflow through the columns.Type: ApplicationFiled: September 22, 2017Publication date: January 11, 2018Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Publication number: 20170145745Abstract: A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a locking pin to lock the first and second ladder portions at an angular position. Each rung is connected to a column by a connector assembly having first and second release buttons.Type: ApplicationFiled: February 9, 2017Publication date: May 25, 2017Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell
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Patent number: 9580959Abstract: A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a shifting mechanism and a ladder angle selector coupled thereto to allow manual selection of the angle between the first and second ladder portions, and a locking pin to lock the first and second ladder portions at an angular position.Type: GrantFiled: December 2, 2014Date of Patent: February 28, 2017Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell
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Publication number: 20160153231Abstract: A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a shifting mechanism and a ladder angle selector coupled thereto to allow manual selection of the angle between the first and second ladder portions, and a locking pin to lock the first and second ladder portions at an angular position.Type: ApplicationFiled: December 2, 2014Publication date: June 2, 2016Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell
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Publication number: 20120267197Abstract: An extendable/retractable ladder assembly includes a first stile and a second stile and a plurality of rungs extending therebetween. Each stile may comprise a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion. A connector assembly connects the rungs to respective columns in the first and second stiles. The ladder has improved manufacturability since connector assemblies may be assembled before connecting the rungs to respective columns. The standing surface of the rungs may be angled such that it is rotated towards horizontal when the ladder assembly is leaned against a wall. A latch assembly may be used to selectively lock relative axial movement between adjacent columns. The latch assembly includes a locking pin assembly comprised of a central post and an outer metal sleeve. An air damper may also be used to control airflow through the columns.Type: ApplicationFiled: June 26, 2012Publication date: October 25, 2012Applicant: CORE DISTRIBUTION, INC.Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Patent number: 8225906Abstract: An extendable/retractable ladder assembly includes a first stile and a second stile and a plurality of rungs extending therebetween. Each stile may comprise a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion. A connector assembly connects the rungs to respective columns in the first and second stiles. The ladder has improved manufacturability since connector assemblies may be assembled before connecting the rungs to respective columns. The standing surface of the rungs may be angled such that it is rotated towards horizontal when the ladder assembly is leaned against a wall. A latch assembly may be used to selectively lock relative axial movement between adjacent columns. The latch assembly includes a locking pin assembly comprised of a central post and an outer metal sleeve. An air damper may also be used to control airflow through the columns.Type: GrantFiled: August 22, 2008Date of Patent: July 24, 2012Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Publication number: 20100044155Abstract: An extendable/retractable ladder assembly includes a first stile and a second stile and a plurality of rungs extending therebetween. Each stile may comprise a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion. A connector assembly connects the rungs to respective columns in the first and second stiles. The ladder has improved manufacturability since connector assemblies may be assembled before connecting the rungs to respective columns. The standing surface of the rungs may be angled such that it is rotated towards horizontal when the ladder assembly is leaned against a wall. A latch assembly may be used to selectively lock relative axial movement between adjacent columns. The latch assembly includes a locking pin assembly comprised of a central post and an outer metal sleeve. An air damper may also be used to control airflow through the columns.Type: ApplicationFiled: August 22, 2008Publication date: February 25, 2010Applicant: CORE DISTRIBUTION, INC.Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Patent number: D624200Type: GrantFiled: September 10, 2009Date of Patent: September 21, 2010Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker
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Patent number: D718455Type: GrantFiled: February 19, 2013Date of Patent: November 25, 2014Assignee: Nonin Medical, Inc.Inventors: Douglas R. Maser, Nathan L. Schlueter, Christian Richard Trifilio
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Patent number: D767784Type: GrantFiled: December 2, 2014Date of Patent: September 27, 2016Assignee: Core Distribution, Inc.Inventors: Mitchell I. Kieffer, Nathan L. Schlueter, Allen A. Caldwell