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1. 发明授权

US08387753B2 Ergonomic extendable/retractable ladder 有权
标题翻译：符合人体工学的伸缩梯
公开(公告)号：US08387753B2
公开(公告)日：2013-03-05
申请号：US11427896
申请日：2006-06-30
申请人： Mitchell I. Kieffer , Craig S. Aizman , Bruce A. Hillukka , Michael J. Kelly , Wayne A. Shakal
发明人： Mitchell I. Kieffer , Craig S. Aizman , Bruce A. Hillukka , Michael J. Kelly , Wayne A. Shakal
IPC分类号： E06C1/00
CPC分类号： E06C7/088 , E06C1/125
摘要： An extendable/retractable ladder assembly includes a first column and a second column, the first column nesting in the second column, and a first rung coupled to, and extending from the second column. A ladder assembly bracket includes a collar portion, which extends about the second column, and a rung portion, which extends from the collar portion into the first rung. The collar portion may be gripped by a hand of an operator in order to position a thumb of the hand in engagement with a button to retract a locking pin of a latch assembly mounted within the rung portion of the bracket.
摘要翻译：可伸缩梯子组件包括第一列和第二列，第一列嵌套在第二列中，第一梯级耦合到第二列和从第二列延伸。梯子组件支架包括围绕第二柱延伸的套环部分和从套环部分延伸到第一梯级的梯级部分。套环部分可以由操作者的手握住，以便将手的拇指定位成与按钮接合，以缩回安装在支架的梯级部分内的闩锁组件的锁定销。

2. 发明申请

US20080000723A1 ERGONOMIC EXTENDABLE/RETRACTABLE LADDER 有权
标题翻译： ERGONOMIC可扩展/可退回的梯子
公开(公告)号：US20080000723A1
公开(公告)日：2008-01-03
申请号：US11427896
申请日：2006-06-30
申请人： Mitchell I. Kieffer , Craig S. Aizman , Bruce A. Hillukka , Michael J. Kelly , Wayne A. Shakal
发明人： Mitchell I. Kieffer , Craig S. Aizman , Bruce A. Hillukka , Michael J. Kelly , Wayne A. Shakal
IPC分类号： E06C1/00
CPC分类号： E06C7/088 , E06C1/125
摘要： An extendable/retractable ladder assembly includes a first column and a second column, the first column nesting in the second column, and a first rung coupled to, and extending from the second column. A ladder assembly bracket includes a collar portion, which extends about the second column, and a rung portion, which extends from the collar portion into the first rung. The collar portion may be gripped by a hand of an operator in order to position a thumb of the hand in engagement with a button to retract a locking pin of a latch assembly mounted within the rung portion of the bracket.
摘要翻译：可伸缩梯子组件包括第一列和第二列，第一列嵌套在第二列中，第一梯级耦合到第二列和从第二列延伸。梯子组件支架包括围绕第二柱延伸的套环部分和从套环部分延伸到第一梯级的梯级部分。套环部分可以由操作者的手握住，以便将手的拇指定位成与按钮接合，以缩回安装在支架的梯级部分内的闩锁组件的锁定销。

3. 外观设计

USD593685S1 Telescoping ladder rung 有权
标题翻译：伸缩梯梯
公开(公告)号：USD593685S1
公开(公告)日：2009-06-02
申请号：US29245960
申请日：2005-12-30
申请人： Mitchell I. Kieffer , Craig S. Aizman , Bruce A. Hillukka , Micheal J. Kelly , Wayne A. Shakal
设计人： Mitchell I. Kieffer , Craig S. Aizman , Bruce A. Hillukka , Micheal J. Kelly , Wayne A. Shakal

4. 发明授权

US06708800B2 Extending ladder and associated manufacturing methods 有权
公开(公告)号：US06708800B2
公开(公告)日：2004-03-23
申请号：US10211930
申请日：2002-08-02
申请人： Mitchell I. Kieffer , Wang Kuo Hua , Craig S. Aizman
发明人： Mitchell I. Kieffer , Wang Kuo Hua , Craig S. Aizman
IPC分类号： E06C100
CPC分类号： E06C1/125 , E06C7/06 , E06C7/083 , E06C7/088 , Y10T403/32467
摘要： Extending ladders and associated manufacturing methods are disclosed. A ladder in accordance with an exemplary embodiment of the present invention comprises a plurality of rung units, each rung unit including a left column, a right column, and a rung extending between the left column and the right column. The ladder may include a first column assembly including a first column and a ring coupled to the first column proximate a distal end thereof, and a second column assembly including a second column and a sleeve coupled to the second column proximate a proximal end thereof. The second column being at least partially disposed within a lumen defined by an internal surface of the first column. The sleeve includes an external guiding surface for contacting the internal surface of the first column and the ring includes an internal guiding surface for contacting an exterior surface of the second column.

5. 发明授权

US06883645B2 Extending ladder and associated manufacturing methods 有权
公开(公告)号：US06883645B2
公开(公告)日：2005-04-26
申请号：US10759263
申请日：2004-01-17
申请人： Mitchell I. Kieffer , Wang Kuo Hua , Craig S. Aizman
发明人： Mitchell I. Kieffer , Wang Kuo Hua , Craig S. Aizman
IPC分类号： E06C1/12 , E06C7/06 , E06C7/08 , E06C1/00 , E06C5/04 , F16B7/10
CPC分类号： E06C1/125 , E06C7/06 , E06C7/083 , E06C7/088 , Y10T403/32467
摘要： Extending ladders and associated manufacturing methods are disclosed. A ladder in accordance with an exemplary embodiment of the present invention comprises a plurality of rung units, each rung unit including a left column, a right column, and a rung extending between the left column and the right column. The ladder may include a first column assembly including a first column and a ring coupled to the first column proximate a distal end thereof, and a second column assembly including a second column and a sleeve coupled to the second column proximate a proximal end thereof. The second column being at least partially disposed within a lumen defined by an internal surface of the first column. The sleeve includes an external guiding surface for contacting the internal surface of the first column and the ring includes an internal guiding surface for contacting an exterior surface of the second column.

6. 发明授权

US07048094B2 Extending ladder and associated manufacturing methods 有权
标题翻译：扩展梯子和相关制造方法
公开(公告)号：US07048094B2
公开(公告)日：2006-05-23
申请号：US11061390
申请日：2005-02-18
申请人： Mitchell I. Kieffer , Wang Kuo Hua , Craig S. Aizman
发明人： Mitchell I. Kieffer , Wang Kuo Hua , Craig S. Aizman
IPC分类号： E06C1/00 , E06C5/04 , F16B7/10
CPC分类号： E06C1/125 , E06C7/06 , E06C7/083 , E06C7/088 , Y10T403/32467
摘要： Extending ladders and associated manufacturing methods are disclosed. A ladder in accordance with an exemplary embodiment of the present invention comprises a plurality of rung units, each rung unit including a left column, a right column, and a rung extending between the left column and the right column. The ladder may include a first column assembly including a first column and a ring coupled to the first column proximate a distal end thereof, and a second column assembly including a second column and a sleeve coupled to the second column proximate a proximal end thereof. The second column being at least partially disposed within a lumen defined by an internal surface of the first column. The sleeve includes an external guiding surface for contacting the internal surface of the first column and the ring includes an internal guiding surface for contacting an exterior surface of the second column.
摘要翻译：披露了梯子和相关的制造方法。根据本发明的示例性实施例的梯子包括多个梯级单元，每个梯级单元包括左列，右列和在左列和右列之间延伸的梯级。梯子可以包括第一柱组件，其包括第一柱和耦合到靠近其远端的第一柱的环;以及第二柱组件，其包括第二柱和在其近端附近联接到第二柱的套筒。第二列至少部分地设置在由第一列的内表面限定的内腔内。套筒包括用于接触第一柱的内表面的外部引导表面，并且环包括用于接触第二柱的外表面的内部引导表面。

7. 发明授权

US08225906B2 Extendable/retractable ladder 有权
标题翻译：可伸缩梯
公开(公告)号：US08225906B2
公开(公告)日：2012-07-24
申请号：US12196556
申请日：2008-08-22
申请人： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
发明人： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
IPC分类号： E06C1/00
CPC分类号： E06C1/125 , E06C7/081 , E06C7/082 , E06C7/086 , E06C7/087 , E06C7/46 , Y10T29/49826
摘要： 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.
摘要翻译：可伸缩梯子组件包括第一平台和第二平台以及在它们之间延伸的多个梯级。每个立柱可以包括以嵌套布置设置的多个列，以便以可伸缩的方式进行相对轴向运动。连接器组件将梯级连接到第一和第二平台中的相应列。梯子已经改善了可制造性，因为连接器组件可以在将梯级连接到相应的列之前进行组装。梯级的站立表面可以是倾斜的，使得当梯子组件靠在墙壁上时，其朝着水平方向旋转。闩锁组件可用于选择性地锁定相邻列之间的相对轴向运动。闩锁组件包括由中心柱和外部金属套筒组成的锁定销组件。还可以使用空气阻尼器来控制通过柱的气流。

8. 外观设计

USD624200S1 Step ladder 有权
标题翻译：阶梯
公开(公告)号：USD624200S1
公开(公告)日：2010-09-21
申请号：US29343266
申请日：2009-09-10
申请人： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
设计人： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker

9. 发明申请

US20100044155A1 EXTENDABLE / RETRACTABLE LADDER 有权
标题翻译：可伸缩的梯子
公开(公告)号：US20100044155A1
公开(公告)日：2010-02-25
申请号：US12196556
申请日：2008-08-22
申请人： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
发明人： Mitchell I. Kieffer , Allen A. Caldwell , Nathan L. Schlueter , Matthew J. Decker
IPC分类号： E06C1/00
CPC分类号： E06C1/125 , E06C7/081 , E06C7/082 , E06C7/086 , E06C7/087 , E06C7/46 , Y10T29/49826
摘要： 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.
摘要翻译：可伸缩梯子组件包括第一平台和第二平台以及在它们之间延伸的多个梯级。每个立柱可以包括以嵌套布置设置的多个列，以便以可伸缩的方式进行相对轴向运动。连接器组件将梯级连接到第一和第二平台中的相应列。梯子已经改善了可制造性，因为连接器组件可以在将梯级连接到相应的列之前进行组装。梯级的站立表面可以是倾斜的，使得当梯子组件靠在墙壁上时，其朝着水平方向旋转。闩锁组件可用于选择性地锁定相邻列之间的相对轴向运动。闩锁组件包括由中心柱和外部金属套筒组成的锁定销组件。还可以使用空气阻尼器来控制通过柱的气流。

10. 外观设计

USD684278S1 Collapsible five legged stepstool 有权
标题翻译：可折叠五脚踏步机
公开(公告)号：USD684278S1
公开(公告)日：2013-06-11
申请号：US29411463
申请日：2012-01-20
申请人： Mitchell I. Kieffer , John Pat McCool , Allen Caldwell , Matthew Decker , Matthew Kunkel
设计人： Mitchell I. Kieffer , John Pat McCool , Allen Caldwell , Matthew Decker , Matthew Kunkel

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