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1.发明授权Fiberglass reinforced plastic lightweight heavy-duty ladder and method of making same 有权玻璃纤维增强塑料轻型重型梯子及其制作方法公开(公告)号：US09168701B2
公开(公告)日：2015-10-27
申请号：US14054189
申请日：2013-10-15
申请人： Nasir U. Ahmed
发明人： Nasir U. Ahmed
CPC分类号： E06C1/02 , B29C55/30 , B29C70/025 , B29C70/06 , B29C70/521 , E06C1/12 , E06C7/08
摘要： A fiberglass reinforced lightweight heavy-duty ladder, and method of making the same, is presented. The method includes impregnating rovings with a resin system and forming the impregnated rovings into a set of rails having a center portion, a left sidewall portion, and a right sidewall portion, where the left sidewall portion and the right sidewall portion each have an article roving density at least 10% greater than that of the center portion.
摘要翻译： 提出了一种玻璃纤维增强轻型重型梯子及其制造方法。 该方法包括用树脂系统浸渍粗纱，并将浸渍的粗纱形成为具有中心部分，左侧壁部分和右侧壁部分的一组轨道，其中左侧壁部分和右侧壁部分各自具有物品粗纱 密度比中心部分的密度大至少10％。
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2.发明申请Fiberglass Reinforced Plastic Lightweight Heavy-Duty Ladder and Method of Making Same 有权玻璃纤维增强塑料轻型重型梯子及其制作方法公开(公告)号：US20140102830A1
公开(公告)日：2014-04-17
申请号：US14054189
申请日：2013-10-15
申请人： Nasir U. Ahmed
发明人： Nasir U. Ahmed
CPC分类号： E06C1/02 , B29C55/30 , B29C70/025 , B29C70/06 , B29C70/521 , E06C1/12 , E06C7/08
摘要： A fiberglass reinforced lightweight heavy-duty ladder, and method of making the same, is presented. The method includes impregnating rovings with a resin system and forming the impregnated rovings into a set of rails having a center portion, a left sidewall portion, and a right sidewall portion, where the left sidewall portion and the right sidewall portion each have an article roving density at least 10% greater than that of the center portion.
摘要翻译： 提出了一种玻璃纤维增强轻型重型梯子及其制造方法。 该方法包括用树脂系统浸渍粗纱，并将浸渍的粗纱形成为具有中心部分，左侧壁部分和右侧壁部分的一组轨道，其中左侧壁部分和右侧壁部分各自具有物品粗纱 密度比中心部分的密度大至少10％。
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公开(公告)号：US6029772A
公开(公告)日：2000-02-29
申请号：US267566
申请日：1999-03-12
申请人： Eizo Takahashi
发明人： Eizo Takahashi
摘要： A reflector having a plurality of grooves formed on the outer periphery and extending in the axial direction thereof and irregularities formed on the inner periphery thereof to provide secure engagement of the reflector on each cross piece of a ladder. The reflectors are easily attached to each cross piece and can be reliably held thereon thereby preventing accidents when the user goes up or down the ladder. The ladder provided with the reflectors includes a pair of beams, a plurality of cross pieces provided between and connecting the beams, and each cross piece has a plurality of grooves provided on the outer periphery and extending in the axial direction thereof. A reflector is disposed on at least one end of each cross piece at a connecting portion between the cross piece and the respective beam, and each reflector is ring shaped and has a plurality of irregularities formed on the inner periphery at a small diameter portion thereof which engage in the grooves of the respective cross piece. Reflector portions having irregularities are also formed on the inner periphery of the reflector at a large diameter portion thereof, and a plurality of grooves are formed on the outer periphery and extend in the axial direction thereof.
摘要翻译： 一种反射器，其具有形成在外周上并在其轴向方向上延伸的多个凹槽和形成在其内周上的凹凸，以提供反射器与梯子的每个横截面上的牢固接合。 反射器容易地连接到每个横梁上并且可以可靠地保持在其上，从而防止当使用者上下梯子时的事故。 设置有反射器的梯子包括一对梁，设置在梁之间并连接梁的多个横梁，并且每个横梁具有设置在外周上并在其轴向方向上延伸的多个槽。 反射器设置在横梁和横梁之间的连接部分的每个横梁的至少一端上，并且每个反射器是环形的，并且在其小直径部分上形成有在内周上的多个不规则部分 啮合在相应横截面的槽中。 在反射器的大直径部分的内周上还形成有凹凸的反射器部分，并且在外周上形成有多个凹槽，并沿其轴向方向延伸。
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公开(公告)号：US4972571A
公开(公告)日：1990-11-27
申请号：US681390
申请日：1984-12-10
申请人： Paul E. Cole , Brian R. Fisher
发明人： Paul E. Cole , Brian R. Fisher
CPC分类号： B21D39/044 , E06C7/08 , Y10T29/4992 , Y10T29/4994
摘要： Ladder constructions and methods of forming the same wherein box-type or tubular rails are employed. The rung-to-rail connection or joint is formed by providing an opening in one of the rail side walls and an aligned clearance hole in the opposite rail side wall to afford an opening through which a swaging tool is projected and forms an annulus in tight engagement into the inner surfaces surrounding the opening in the first named rail side wall, cooperating swaging means forming an annulus on the outer surfaces surrounding the said opening. A ladder having tubular side rails is hence provided with a rail-to-rung joint on one of the walls by projecting a swaging tool through a clearance hole in an opposite wall. The clearance hole is adapted to be closed by placing a plug in the same and in the event the clearance hole is in the innermost side rail the rung is adapted to be used to close the space provided by the opening in the rail between the rung and one of the side rails.
摘要翻译： 梯形结构及其形成方法，其中采用盒型或管状导轨。 梯级到轨道连接或接头通过在轨道侧壁中的一个中提供开口和在相对的轨道侧壁中的对准的间隙孔来形成，以提供一个开口，锻模工具通过该开口突出并形成紧密的环形 接合到围绕第一所述轨道侧壁的开口的内表面，配合的模锻装置在围绕所述开口的外表面上形成环形空间。 因此，具有管状侧轨的梯子通过将相对的壁上的间隙孔突出，使其在其中一个壁上设置有轨至轨接头。 通过将塞子插入其中，间隙孔适于闭合，并且在间隙孔处于最内侧轨道的情况下，该梯级适于用于将由轨道中的开口提供的空间关闭在梯级和 其中一个侧轨。
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公开(公告)号：US3653697A
公开(公告)日：1972-04-04
申请号：US3653697D
申请日：1969-08-12
申请人： ERNST HERBERT
发明人： ERNST HERBERT
CPC分类号： E04B1/585 , E04B2001/5856 , F16B7/00 , Y10T403/213 , Y10T403/4637 , Y10T403/4694
摘要： A joint for connecting two or more structural elements at an angle to each other. At least a first of these elements is of a tubular shape, preferably of a rectangular cross section, and provided with an aperture in its wall through which the end of a second element is inserted so as to abut directly or indirectly against the inside of the wall of the first element at a point opposite the aperture where the inserted end of the second element is additionally secured either directly or indirectly to the wall of the first element. The two elements may either be welded directly to each other or be interconnected by an additional supporting member which may be inserted into and welded to the first element and then braces the opposite wall portions of the latter against each other. This supporting member forms a socket into which the end of the second element may be inserted.
摘要翻译： 用于将两个或多个结构元件彼此成角度连接的接头。 这些元件中的至少第一元件为管状，优选为矩形横截面，并且在其壁的壁上设置有孔，第二元件的端部通过该孔插入，以便直接或间接抵靠 第一元件的与第一元件的插入端相对的点处的第一元件的壁另外被直接地或间接地固定到第一元件的壁。 两个元件可以被直接焊接到彼此或通过另外的支撑构件相互连接，附加的支撑构件可被插入并焊接到第一元件上，然后将后者的相对的壁部分相互支撑。 该支撑构件形成插座，第二元件的端部可插入该插座中。
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公开(公告)号：US3528525A
公开(公告)日：1970-09-15
申请号：US3528525D
申请日：1967-10-19
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公开(公告)号：US20200003008A1
公开(公告)日：2020-01-02
申请号：US16490667
申请日：2018-03-06
发明人： Theo Heitkamp , Bernd Schmeinck
摘要： The invention relates to a ladder system for trench shoring, comprising a lower ladder (14) which extends from the bottom of a trench over a lower subportion (T1) of the height of the trench, and an upper ladder (16) which extends over an upper subportion (T2) of the height of the trench up to a trench edge, wherein the upper ladder (16) is a suspension ladder for suspending onto a shoring panel (12). A ladder system according to the invention is intended to increase the safety of the workers particularly for deep trenches. In a ladder system according to the invention, a platform (22) is arranged at the lower end of the upper ladder (16) is, and that the lower ladder (14) is a stepladder or leaning ladder which stands on the bottom of the trench.
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公开(公告)号：US20110073729A1
公开(公告)日：2011-03-31
申请号：US12571126
申请日：2009-09-30
CPC分类号： E06C7/48
摘要： A ladder storage device includes: a ladder end cradle, adapted to releasably, rotatably receive the top end of the ladder when the ladder is in an lowered orientation. When the ladder is received and rotated into a raised orientation, the ladder end cradle retains the top end of the ladder so that the legs of the ladder may be releasably held to the ceiling, thereby storing the ladder adjacent to the ceiling.
摘要翻译： 梯子存储装置包括：梯子支架，当梯子处于降低的方向时，适于可释放地可旋转地容纳梯子的顶端。 当梯子被接收并旋转到升高的方向时，梯子支架保持梯子的顶端，使得梯子的腿可以可释放地保持在天花板上，从而将梯子邻近天花板存放。
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公开(公告)号：US20110073410A1
公开(公告)日：2011-03-31
申请号：US12853668
申请日：2010-08-10
申请人： Hua Hsiang Lin
发明人： Hua Hsiang Lin
摘要： The present disclosure provides a swimming pool ladder with a barrier. The ladder includes two ladder sections. A top platform for supporting is connected between the upper portions of the two ladder sections and disposed above the swimming pool. The two ladder sections are respectively positioned inside and outside the swimming pool. The ladder section includes two parallel-disposed rails and a plurality of steps. The plurality of steps are mounted at intervals along the two rails from top to bottom. A barrier is provided that is perpendicular to the inner side face of the first ladder section. The barrier has a triangle shape, one edge of which is adjacent the inner side face of the first ladder section and fixed on at least two steps through at least two connectors and another edge is adjacent the inner sidewall of the swimming pool. The top end of the barrier is spaced from the top platform by a distance and the bottom end is adjacent the floor of the swimming pool.
摘要翻译： 本公开提供了一种具有屏障的游泳梯。 梯子包括两个梯子部分。 用于支撑的顶部平台连接在两个梯子部分的上部之间并且设置在游泳池上方。 两个梯子分别位于游泳池内外。 梯子部分包括两个平行布置的轨道和多个台阶。 多个步骤沿着两个轨道从上到下间隔安装。 提供垂直于第一梯形部分的内侧面的屏障。 屏障具有三角形形状，其一个边缘与第一梯形部分的内侧面相邻并且通过至少两个连接器至少两个台阶固定，另一个边缘邻近游泳池的内侧壁。 屏障的顶端与顶部平台隔开一段距离，底端与游泳池的地板相邻。
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公开(公告)号：US20100044154A1
公开(公告)日：2010-02-25
申请号：US12193798
申请日：2008-08-19
申请人： Daid J. Lipniarski
发明人： Daid J. Lipniarski
摘要： An A-frame ladder has a first ladder and a second ladder. The first ladder has two rails interconnected by a plurality of steps and a first set of grooves that receive a tambour device that inhibits a person from using the first ladder's steps. The second ladder has two rails interconnected by a plurality of steps and a second set of grooves, interconnected to the first set of grooves, that receive the tambour device so the first ladder and the second ladder can be used and inhibits a person from entering the area between the first ladder and the second ladder through the second ladder's steps.
摘要翻译： A型梯子有一个第一梯子和一个第二梯子。 第一梯子具有通过多个台阶相互连接的两个轨道，以及第一组凹槽，其接收抑制人使用第一梯子台阶的嘟嘟声装置。 第二梯子具有通过多个台阶互连的两个轨道和互连到第一组凹槽的第二组凹槽，该第二组槽容纳该组合装置，使得可以使用第一梯子和第二梯子并禁止人进入 第一梯子和第二梯子之间的区域通过第二梯子的台阶。
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