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公开(公告)号：US11692395B1
公开(公告)日：2023-07-04
申请号：US16801064
申请日：2020-02-25
申请人： Robert Wade Bullock
发明人： Robert Wade Bullock
摘要： The invention presented is a ladder blocking device attached to a ladder to prevent unauthorized use of the ladder. In one embodiment, the device includes a plurality of prongs that extends from a support system that holds the device onto the ladder. In one alternate embodiment, a shield rests over and is supported by the prongs. In second alternate embodiment, the shield is attached directly to the support system without the presence of the prongs.
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公开(公告)号：US20220219611A1
公开(公告)日：2022-07-14
申请号：US17134230
申请日：2021-01-13
发明人： Ming-Shun Yang
摘要： The present invention discloses a multifunction ladder structure, it includes a first ladder frame; a second ladder frame; and two combining assemblies that combine the second ladder frame with the first ladder frame, altogether with an optional adjustable band and plural optional foot rods each slides or fixes individually in the first or the second ladder frame. With the implementation of the present invention, the multifunction ladder structure has the special benefit of being easy to install or operate; being able to insert and set firmly in between a tire and the wheel fender as a tire ladder; being able to stand firmly beside a car or places as an A-shaped ladder; with further adding of an adjustable band on the first ladder frame to encircle the tire for even better stability when being used as a tire ladder, or to encircle the second ladder frame for safer storing or transporting; adopting plural foot rods each slides or remains still individually in the first or the second ladder frame, the multifunction ladder structure further applies better on tires of different size, and stands firmly on rough or inclined ground, roads or object surfaces; and with the top rod of the first ladder frame or the further installing of a second stepping unit, the stepping height of the A-shaped ladder can be further raised for even more convenient applications.
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公开(公告)号：US10808459B2
公开(公告)日：2020-10-20
申请号：US15952437
申请日：2018-04-13
发明人： Benjamin L. Cook , N. Ryan Moss , Brian B. Russell
IPC分类号： E06C7/10 , E06C1/06 , E06C7/08 , E06C1/18 , E06C1/16 , E06C1/393 , E06C7/50 , E06C7/46 , E06C7/42
摘要： Ladder components, such as braces, as well as ladders and methods of manufacturing ladders are provided. In one embodiment, a ladder brace is provided which extends between a rail and a cross member (e.g., a rung or a cross-brace). The ladder brace may include a first connecting portion associated with the rail, a second connecting portion associated with the cross member, and a strut portion extending between the first and second connecting portions. At least one of the first connecting portion and the second connecting portion is configured to completely encircle its associated component (e.g., either the rail or the cross member, respectively).
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公开(公告)号：US20180163470A1
公开(公告)日：2018-06-14
申请号：US15379124
申请日：2016-12-14
申请人： Daniel C. Mora , Robert D. Beggs
发明人： Daniel C. Mora , Robert D. Beggs
摘要： A ladder includes a first rail. The ladder includes a second rail. The ladder includes a first rung attached to the first and second rails. The ladder includes a second rung attached to the first and second rails. The user climbs the ladder by stepping on the first and second rungs. Each rail having a web with a first flange extending from a first side of the web and a second flange extending from a second side of the web, with the web between the first arid second flange. The first rail having a first handhold extending through the web that a user places the user's hand in to grab the first rail. A method for climbing a ladder. A method for producing a ladder rail. A handhold.
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公开(公告)号：US20180087320A1
公开(公告)日：2018-03-29
申请号：US15682105
申请日：2017-08-21
发明人： Ethan Lindner , Shey Lindner
CPC分类号： E06C1/397 , B62B1/18 , B62B1/20 , B62B1/208 , B62B5/0083 , B62B2205/104 , E06C1/06 , E06C1/10 , E06C1/12
摘要： A wheeled ladder may comprise a ladder having an axle disposed within a rung, and a wheel mounted at each end of the axle.
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公开(公告)号：US09815529B2
公开(公告)日：2017-11-14
申请号：US13735784
申请日：2013-01-07
申请人： WAG PRODUCTS, LLC
发明人： James M Perkins
摘要： Disclosed is a boarding apparatus for boarding animals onto a boat or other above-water surface, and methods of using the apparatus. The apparatus has a boarding step assembly, a mounting assembly attached to the boarding step assembly for connecting the step assembly to a boat hull gunwale or transom lip, and a strut assembly for supporting the engagement of the boarding step assembly to the boat hull.
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公开(公告)号：US09663991B2
公开(公告)日：2017-05-30
申请号：US14241491
申请日：2012-08-24
摘要： A ladder including a first stringer and a second stringer spaced transverse from each other is provided. Each of the first and second stringers defines a channel and includes a plurality of crosspieces disposed in the channels of the first and second stringers. A plurality of rungs are spaced along and coupled between the first and second stringers. Each of the rungs has a horizontal portion and a vertical portion extending from the first stringer to the second stringer. A plurality of ribs are spaced along and coupled between the horizontal and vertical portions of the rungs.
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公开(公告)号：US4388983A
公开(公告)日：1983-06-21
申请号：US342149
申请日：1982-01-25
摘要： A lightweight ladder includes a vertical member of flat sided tubing, rungs formed of angle metal, and ladder feet adapted to engage retaining clips mounted on a vertical structure. The ladder feed are designed to provide wedging between the clips and the vertical structure such that set screws are not required to keep the ladder in place and stable.
摘要翻译： 一个轻型梯子包括一个垂直的平面管件，由角金属形成的梯子，以及适合于接合安装在垂直结构上的固定夹的梯形脚。 梯子进给设计用于在夹子和垂直结构之间提供楔入，使得固定螺钉不需要将梯子保持在适当位置并且稳定。
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公开(公告)号：US20240309702A1
公开(公告)日：2024-09-19
申请号：US18600143
申请日：2024-03-08
摘要： A ladder includes a first rail and a second rail spaced apart and parallel to one another. The ladder includes a plurality of rungs coupled between the first rail and the second rail. The plurality of rungs is spaced a distance apart along a length of the first rail and the second rail. The ladder includes an anti-slip footing removably coupled to a proximal end of the first rail and a proximal end of the second rail. The anti-slip base includes a base, a first side support coupled to a first side of the base, and a second side support coupled to a second side of the base opposite the first side of the base. The first side support and the second side support inhibit the first rail and the second rail sliding. The anti-slip footing is configured to move relative to the first rail and the second rail.
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公开(公告)号：US11261665B2
公开(公告)日：2022-03-01
申请号：US17075942
申请日：2020-10-21
摘要： A fall arrest system includes a ladder configured to provide access to an elevated structure and a fall arrest device configured to be secured to the elevated structure, the fall arrest device including an upper anchor, the upper anchor including a first end configured to be secured to the elevated structure and a second end distal from the first end.
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