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公开(公告)号：USD355994S
公开(公告)日：1995-03-07
申请号：US10178
申请日：1993-06-29
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公开(公告)号：US20130112501A1
公开(公告)日：2013-05-09
申请号：US13373122
申请日：2011-11-05
IPC分类号： E06C1/06
摘要： An extension ladder including a base section having two side rails with rungs spanning horizontally between them. The extension ladder including an intermediate fly section having two side rails with rungs spanning horizontally between them. The intermediate fly section slidably attached to the base section. The extension ladder including a top fly section having two side rails with rungs spanning horizontally between them, the top fly section sliding attached to the intermediate fly section with the intermediate fly section disposed between the base and the top fly section. The extension ladder including a handle having a first strap portion attached to the base section having a first buckle portion, and a second strap portion attached to the top fly section having a second buckle portion that engages with the first buckle portion when the base section, intermediate fly section and top fly section are in a folded state. A method of moving an extension ladder.
摘要翻译： 一个延伸梯，包括一个具有两个横向横跨它们之间的横梁的基座部分。 延伸梯包括一个中间飞行部分，该中间飞行部分具有两个侧向横梁，横向横跨它们之间。 中间飞翼部分可滑动地附接到基部。 延伸梯包括顶部飞行部分，该顶部飞行部分具有两个侧向横梁，横向横跨在它们之间，顶部飞行部分滑动地附接到中间飞行部分，中间飞行部分设置在基部和顶部飞行部分之间。 所述延伸梯包括具有附接到所述基部的第一带部分的把手，所述第一带部分具有第一带扣部分，以及附接到所述顶部飞行部分的第二带部分，所述第二带扣部分具有当所述基部部分与所述第一带扣部分接合时的第二带扣部分， 中间飞行部分和顶部飞行部分处于折叠状态。 移动延伸梯的方法。
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公开(公告)号：US20220205321A1
公开(公告)日：2022-06-30
申请号：US17699070
申请日：2022-03-18
摘要： An extension ladder including a base section and an intermediate fly section. The intermediate fly section slidably attached to the base section. The extension ladder including a top fly section. The top fly section sliding attached to the intermediate fly. The extension ladder including a handle having a first strap portion attached to the base section having a first buckle portion, and a second strap portion attached to the top fly section having a second buckle portion that engages with the first buckle portion when the base section, intermediate fly section and top fly section are in a folded state where they essentially form a shape of a cube so the base section, intermediate fly section and top fly section can be lifted by the handle. The present invention pertains to a method of moving an extension ladder.
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公开(公告)号：US11286716B2
公开(公告)日：2022-03-29
申请号：US13373122
申请日：2011-11-05
摘要： An extension ladder including a base section having two side rails with rungs spanning horizontally between them. The extension ladder including an intermediate fly section having two side rails with rungs spanning horizontally between them. The intermediate fly section slidably attached to the base section. The extension ladder including a top fly section having two side rails with rungs spanning horizontally between them, the top fly section sliding attached to the intermediate fly section with the intermediate fly section disposed between the base and the top fly section. The extension ladder including a handle having a first strap portion attached to the base section having a first buckle portion, and a second strap portion attached to the top fly section having a second buckle portion that engages with the first buckle portion when the base section, intermediate fly section and top fly section are in a folded state. A method of moving an extension ladder.
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公开(公告)号：US5791439A
公开(公告)日：1998-08-11
申请号：US426194
申请日：1995-04-21
申请人： David E. Plotner , Edward E. Heald , Kevin L. McIntire , Richard P. Sulecki , Mitchell H. Hetrich , Frederick J. Bartnicki
发明人： David E. Plotner , Edward E. Heald , Kevin L. McIntire , Richard P. Sulecki , Mitchell H. Hetrich , Frederick J. Bartnicki
摘要： A member for connecting a rail to a horizontal element of a ladder. The member comprises a first portion that connects to the horizontal member. The member also comprises a second portion which connects to the rail and extends essentially in parallel with the rail. The second portion is integrally connected to the first portion such that the first portion and the second portion are one continuous piece. The second portion is in an angular relationship of less than 90.degree. with the first portion. A member for connecting a rail having a first rail flange and a second rail flange to a horizontal element of a ladder. The member comprises a first arm which connects to the first rail flange and the horizontal member. The member is also comprised of a second arm which connects to the second rail flange and the horizontal member. Additionally, the member comprises a central body which is integrally connected to the second arm and the first arm. The first arm, second arm and central body are one continuous piece, preferably of plastic. A ladder comprised of the member for each rail. A method for using a ladder. The method comprises the steps of placing a load on the ladder. Next there is the step of transferring forces generated from the load to a member connected between a rail of the ladder and a first step of the ladder. The member can include an apparatus for holding a washer. An apparatus for holding a washer. The apparatus comprises a backing having a backing surface. The apparatus also comprises a retainer extending from the backing. The retainer holds the washer. The retainer has a front through which the washer is introduced into the retainer. Additionally, the apparatus comprises a stop extending from the backing. The stop is disposed adjacent to the front of the retainer and prevents the washer from coming out of the retainer when the washer is in the retainer. The present invention pertains to a method for holding a washer. The method comprises the steps of positioning the washer at a front of a retainer. Then there is the step of moving the washer past a stop adjacent the front of the retainer. Next there is the step of seating the washer in the retainer, with the stop preventing the washer from coming out of the retainer.
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公开(公告)号：US07516817B2
公开(公告)日：2009-04-14
申请号：US11035739
申请日：2005-01-15
申请人： Jon M. Pate , Kevin L. McIntire
发明人： Jon M. Pate , Kevin L. McIntire
IPC分类号： E06C7/50
摘要： A knee brace for a ladder including a first flange and a second flange. The brace includes a web extending from the first flange and the second flange which together form a u-shaped cross-section. The brace includes a first portion that connects to a step. The brace includes a second portion which connects to the rail and terminates at a distance from a joint. The second portion's first and second flanges and web presenting three contact surfaces which connect to the rail and extend essentially in parallel with the rail and conforms with the rail to which the knee brace is attached so forces can be transferred therebetween. The first and second flanges contact a first rail flange and second rail flange, respectively, and the web contacts the web of the rail of u-shaped cross-section. The brace includes a first rivet extending through the first rail flange and first flange. The brace includes a second rivet extending through the second rail flange and the second flange adjacent the rail end. A method for using a ladder.
摘要翻译： 一种用于梯子的膝盖支架，包括第一凸缘和第二凸缘。 支架包括从第一凸缘和第二凸缘延伸的网，它们一起形成U形横截面。 支架包括连接到台阶的第一部分。 支架包括连接到导轨并终止于距离接头一定距离的第二部分。 第二部分的第一和第二凸缘和腹板呈现三个接触表面，其连接到轨道并且基本上平行于轨道延伸并且符合与膝盖支撑件相连接的轨道，因此可以在其间传递力。 第一和第二凸缘分别接触第一导轨凸缘和第二导轨凸缘，并且腹板接触U形横截面的导轨腹板。 支架包括延伸穿过第一导轨凸缘和第一凸缘的第一铆钉。 支架包括延伸穿过第二轨道凸缘的第二铆钉和邻近轨道端的第二凸缘。 使用梯子的方法。
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