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公开(公告)号：US06883645B2
公开(公告)日：2005-04-26
申请号：US10759263
申请日：2004-01-17
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.
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公开(公告)号：US07048094B2
公开(公告)日：2006-05-23
申请号：US11061390
申请日：2005-02-18
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。
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公开(公告)号：US06708800B2
公开(公告)日：2004-03-23
申请号：US10211930
申请日：2002-08-02
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.
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