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公开(公告)号：US20200370372A1
公开(公告)日：2020-11-26
申请号：US16993027
申请日：2020-08-13
申请人： Ross Hoffmann
发明人： Ross Hoffmann
摘要： A safety rescue attachment for a ladder includes a foldable safety extension having a ladder engagement clamp on a terminal end thereof.
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公开(公告)号：US20160160561A1
公开(公告)日：2016-06-09
申请号：US14957960
申请日：2015-12-03
发明人： Chang-Yi YU
摘要： A picking ladder cart with a synchronized brake is provided, which includes a frame, a plurality of wheels, a ladder, and a stopper. The wheels are installed at a bottom of the frame. The ladder is pivotally connected to a side of the frame, wherein the ladder is pivotally movable between a first position and a second position. The ladder includes two side rails and a plurality of steps which are connected between the two side rails. The stopper has a first end and a second end, wherein the first end is connected to the bottom of the frame, and the second end is close to the ladder. When the ladder is moved to the second position, one of the plurality of steps which is arranged at the lowest position among the steps abuts against the second end of the stopper, which makes the stopper contact one of the wheels. Whereby, when an operator steps on the ladder of the picking ladder cart, the lowest step drives the stopper to abut against and stop the wheels, which increases the working efficiency.
摘要翻译： 提供具有同步制动器的拾取梯车，其包括框架，多个车轮，梯子和止动件。 车轮安装在车架的底部。 梯子枢转地连接到框架的一侧，其中梯子可在第一位置和第二位置之间枢转运动。 梯子包括两个侧轨和连接在两个侧轨之间的多个台阶。 止动件具有第一端和第二端，其中第一端连接到框架的底部，并且第二端靠近梯子。 当梯子移动到第二位置时，设置在台阶中的最低位置的多个台阶中的一个抵靠止动器的第二端，这使得止动器接触其中一个车轮。 因此，当操作员踏上采摘梯车的梯子时，最下层的踏板驱动挡块抵靠并停止车轮，从而提高了工作效率。
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公开(公告)号：US20150144428A1
公开(公告)日：2015-05-28
申请号：US14400903
申请日：2013-05-13
发明人： Richard Weston
摘要： A telescopic loft ladder has two stiles with sections that are telescopically collapsible within each other, rungs having lateral ends each connected to respective sections the stiles, retractable pins in the ends of the rungs for engaging holes in the stile sections retain them in an extended position, and levers on the rungs that automatically operate when two rungs contact one another to disengage pins of the upper of the contacting rungs from the holes to permit collapse of the next higher rung. Each uppermost stile section is rotatable relative to the section connected to the uppermost rung of the ladder and has circumferentially and axially offset pin receiving holes. At least one resilient element biases the next to uppermost rung away from the uppermost rung to ensure that the locking pin of the uppermost rung engages a hole in the uppermost stile section as the ladder is lowered.
摘要翻译： 可伸缩的阁楼梯具有两个具有彼此可伸缩地折叠的部分的横梁，横向端部各自连接到各个部分的横梁上，梯级的端部中的可伸缩销用于在竖框部分中的接合孔将它们保持在延伸位置 ，以及当两个梯级彼此接触以自动操作的梯级上的杠杆，以使接触梯的上部的销与孔脱离，以允许下一个较高的梯级的塌陷。 每个最上部的水平段可相对于连接到梯子的最上层的部分旋转，并且具有周向和轴向偏置的销接收孔。 至少一个弹性元件将下一个偏压从最上面的梯级偏离到最上层，以确保当梯子降低时，最上层的锁定销接合最上部的水平段中的孔。
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公开(公告)号：US20220025701A1
公开(公告)日：2022-01-27
申请号：US17379714
申请日：2021-07-19
申请人： Michael Scheurich , Tek Lentine , Jerry Lauricella , Slavisa Dacic , Devin Hughes , David Pozgay
发明人： Michael Scheurich , Tek Lentine , Jerry Lauricella , Slavisa Dacic , Devin Hughes , David Pozgay
摘要： An extension ladder having a base section having a first base rail and a second base rail in parallel and spaced relationship with the first base rail and rungs attached to and between the first and second base rails. The extension ladder having a fly section having a first fly rail and a second fly rail in parallel and spaced relationship with the first fly rail and rungs attached to and between the first and second fly rails. The fly section in sliding engagement with the base section. The extension ladder having a force applicator attached to the base section and the fly section which offsets some or all weight of the fly section. A method for using an extension ladder. A method for manufacturing an extension ladder.
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公开(公告)号：US11225832B2
公开(公告)日：2022-01-18
申请号：US16345565
申请日：2017-10-31
申请人： Dong Yeong Seo
发明人： Dong Yeong Seo
摘要： According to the present invention, a ladder having an adjustable length comprises: a first support including a first outer support and a first inner support inserted into the first outer support; a horizontal foothold for connecting the first supports to each other; a first gear formed at the inner side of the horizontal foothold and having a groove part formed therein; a second gear engaging with the first gear and changing the rotational direction of the first gear; a rotary bar coupled to the second gear; a third gear formed at the end of one side of the rotary bar; a screw bolt having a fourth gear, which engages with the third gear and is formed at the end thereof, formed inside the first inner support, formed in a stick type, and having threads formed on the outer side thereof; and a screw nut in which the screw bolt is formed, and to which the first inner support is coupled at the outer side thereof.
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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
摘要： 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：US09845640B2
公开(公告)日：2017-12-19
申请号：US15593452
申请日：2017-05-12
发明人： Han-Tsung Chen
摘要： An extension ladder includes sub-ladders and cushions. Each sub-ladder includes a rung s connected to two tubes. The tubes of each sub-ladder are telescopically connected to the tubes of an adjacent sub-ladder. Each cushion includes an air bag and a slow-release unit. The air bag includes an open end with a channel. The air bag of each cushion is inserted in a corresponding tube. The slow-release unit is operable to slowly release air from the air bag and includes a restraint and a membrane. The restraint is connected to the open end of the air bag. The membrane includes an aperture and is movable arranged between the restraint and the open end of the air bag, with the aperture in communication with the channel.
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公开(公告)号：US20160305185A1
公开(公告)日：2016-10-20
申请号：US15085675
申请日：2016-03-30
申请人： E-One, Inc.
发明人： James Salmi , Oliver Bruhn
摘要： An telescopic ladder for a vehicle. The telescopic ladder comprises a first ladder section and a second ladder section, with each ladder section comprising a front portion and a rear portion and each including opposing sides extending from the front portion to the rear portion. The second ladder section is configured to telescopically extend from the first ladder section. The telescopic ladder further includes an extension support for facilitating the extension of the second ladder section from the first ladder section. The extension support includes at least one front roller assembly positioned adjacent to a front portion of the first ladder section, at least one pair of side roller assemblies positioned on the sides of the first ladder section, and at least one pair of cam-follower assemblies positioned on the sides of the second ladder section adjacent to the rear portion of the second ladder section.
摘要翻译： 用于车辆的伸缩梯。 伸缩式梯子包括第一梯形部分和第二梯形部分，每个梯形部分包括前部和后部，并且每个梯部包括从前部延伸到后部的相对侧。 第二梯形部分构造成从第一梯形部分伸缩地延伸。 伸缩梯还包括用于促进第二梯子部分从第一梯形部分延伸的延伸支撑件。 延伸支撑件包括至少一个邻近第一梯子部分的前部定位的前辊组件，位于第一梯子部分侧面的至少一对侧辊组件和至少一对凸轮从动组件 位于与第二梯子部分的后部相邻的第二梯子部分的侧面上。
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29.发明申请公开(公告)号：US20150267468A1
公开(公告)日：2015-09-24
申请号：US14661504
申请日：2015-03-18
摘要： A ladder is provided having a first assembly and a second assembly slidably coupled with the first assembly. The first assembly includes a first pair of spaced apart rails and a first plurality of rungs extending between and coupled to the first pair of spaced apart rails. the second assembly includes a second pair of spaced apart rails and a second plurality of rungs extending between and coupled to the second pair of spaced apart rails. A support apparatus is coupled with the first assembly and includes one or more arms that are pivotally displaced from a refracted position to a deployed position responsive to displacement of the first assembly a specified distance relative to the second assembly.
摘要翻译： 提供了具有第一组件和与第一组件可滑动联接的第二组件的梯子。 第一组件包括第一对间隔开的轨道和在第一对间隔开的轨道之间延伸并耦合到第一对间隔开的轨道的第一多个梯级。 所述第二组件包括第二对间隔开的轨道和在所述第二对间隔开的轨道之间延伸并耦合到所述第二对间隔开的轨道的第二多个梯级。 支撑装置与第一组件联接并且包括一个或多个臂，其响应于第一组件相对于第二组件的特定距离的位移而从折射位置枢转地移位到展开位置。
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公开(公告)号：US20090101436A1
公开(公告)日：2009-04-23
申请号：US12148343
申请日：2008-04-17
摘要： Truss arrangements utilizable in ladder sections of extendible ladder arrangements are described. Also described are ladder arrangements utilizing in the truss arrangements, and methods designed in use.
摘要翻译： 描述可用于可伸缩梯子装置的梯形部分中的桁架布置。 还描述了在桁架布置中使用的梯子布置以及在使用中设计的方法。
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