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公开(公告)号：US20190093428A1
公开(公告)日：2019-03-28
申请号：US16203778
申请日：2018-11-29
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Nathan L. Schlueter , Allen A. Caldwell
Abstract: 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.
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公开(公告)号：US10053912B2
公开(公告)日：2018-08-21
申请号：US15712717
申请日：2017-09-22
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
CPC classification number: E06C1/125 , E06C7/081 , E06C7/082 , E06C7/086 , E06C7/087 , E06C7/46 , Y10T29/49826
Abstract: 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.
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公开(公告)号：US10995547B2
公开(公告)日：2021-05-04
申请号：US16080206
申请日：2017-02-28
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Nathan L. Schlueter
Abstract: 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.
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公开(公告)号：US20180010388A1
公开(公告)日：2018-01-11
申请号：US15712717
申请日：2017-09-22
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
CPC classification number: E06C1/125 , E06C7/081 , E06C7/082 , E06C7/086 , E06C7/087 , E06C7/46 , Y10T29/49826
Abstract: 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.
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公开(公告)号：US20160153231A1
公开(公告)日：2016-06-02
申请号：US14557944
申请日：2014-12-02
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Nathan L. Schlueter , Allen A. Caldwell
Abstract: 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.
Abstract translation: 可折叠的梯子具有第一梯子部分和通过一对铰链机构铰接地连接到第一梯子部分的第二梯子部分。 每个铰链机构适于锁定第一和第二梯形部分，使得第一梯形部分和第二梯形部分在它们之间形成一个角度。 铰链机构具有换档机构和与其连接的梯角选择器，以允许手动选择第一和第二梯子部分之间的角度，以及锁定销将第一和第二梯子部分锁定在角位置。
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Patent Agency Ranking
公开(公告)号：US10753149B2
公开(公告)日：2020-08-25
申请号：US16041042
申请日：2018-07-20
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
Abstract: 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.
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公开(公告)号：US09416591B2
公开(公告)日：2016-08-16
申请号：US14558042
申请日：2014-12-02
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Allen A. Caldwell
Abstract: A telescoping ladder includes a stabilizer connected to a stabilizer housing proximal to the floor surface on which the ladder is positioned. The first stabilizer can move between an extended position and a collapsed position. In the extended position, the first stabilizer extends out of a hollow body portion of the stabilizer housing and collapse into the hollow body portion of the rung in the collapsed position. The stabilizer comprises a locking button to lock the stabilizer in its extended position. The ladder comprises a flange that can release the locking button thereby unlocking the stabilizer from its extended position and move it into the collapsed position.
Abstract translation: 伸缩式梯子包括稳定器，该稳定器连接到靠近地板表面的稳定器壳体，梯子被定位在其上。 第一稳定器可以在延伸位置和折叠位置之间移动。 在延伸位置，第一稳定器从稳定器壳体的中空主体部分延伸出来并且折叠成处于折叠位置的梯级的中空主体部分。 稳定器包括用于将稳定器锁定在其延伸位置的锁定按钮。 梯子包括能够释放锁定按钮的凸缘，从而将稳定器从其延伸位置解锁并将其移动到折叠位置。
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公开(公告)号：US20160153232A1
公开(公告)日：2016-06-02
申请号：US14558042
申请日：2014-12-02
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Allen A. Caldwell
Abstract: A telescoping ladder includes a stabilizer connected to a stabilizer housing proximal to the floor surface on which the ladder is positioned. The first stabilizer can move between an extended position and a collapsed position. In the extended position, the first stabilizer extends out of a hollow body portion of the stabilizer housing and collapse into the hollow body portion of the rung in the collapsed position. The stabilizer comprises a locking button to lock the stabilizer in its extended position. The ladder comprises a flange that can release the locking button thereby unlocking the stabilizer from its extended position and move it into the collapsed position.
Abstract translation: 伸缩式梯子包括稳定器，该稳定器连接到靠近地板表面的稳定器壳体，梯子被定位在其上。 第一稳定器可以在延伸位置和折叠位置之间移动。 在延伸位置，第一稳定器从稳定器壳体的中空主体部分延伸出来并且折叠成处于折叠位置的梯级的中空主体部分。 稳定器包括用于将稳定器锁定在其延伸位置的锁定按钮。 梯子包括能够释放锁定按钮的凸缘，从而将稳定器从其延伸位置解锁并将其移动到折叠位置。
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公开(公告)号：US11174678B2
公开(公告)日：2021-11-16
申请号：US16180470
申请日：2018-11-05
Applicant: Core Distribution, Inc.
Inventor： Mitchell I. Kieffer , Nathan L. Schlueter
Abstract: 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.
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公开(公告)号：US20210123302A1
公开(公告)日：2021-04-29
申请号：US17068074
申请日：2020-10-12
Applicant: Core Distribution, Inc.
Inventor： Allen A. Caldwell , Mitchell I. Kieffer
Abstract: The invention provides a tripod assembly comprising a plurality of legs, a central support member, and a central post. Each of the legs is pivotably coupled to the central support member. The central support member surrounds the central post. A plurality of columns is disposed in a nested arrangement for relative axial movement in a telescopic fashion along an axis of the plurality of columns between a fully-extended position and a collapsed position. The columns are received in the central post when the columns are in the collapsed position. A first end of a connecting rod is coupled to one of the columns. A bracket assembly is coupled to a second end of the connecting rod and is configured to receive a rung of a ladder therein. A bracket member is coupled to an uppermost column and includes a channel configured to receive a second rung of the ladder therein.
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