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公开(公告)号：US1496201A
公开(公告)日：1924-06-03
申请号：US52839722
申请日：1922-01-11
申请人： RUSSELL O WEBSTER
发明人： BAXTER CHARLES E
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公开(公告)号：US1478617A
公开(公告)日：1923-12-25
申请号：US56069222
申请日：1922-05-13
申请人： SHANNON RALPH W , SANDERS CHARLAN E
发明人： SHANNON RALPH W , SANDERS CHARLAN E
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公开(公告)号：US1424934A
公开(公告)日：1922-08-08
申请号：US43871721
申请日：1921-01-20
申请人： WILLIAM PATERSON , PATERSON MAY H
发明人： WILLIAM PATERSON , PATERSON MAY H
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公开(公告)号：US639380A
公开(公告)日：1899-12-19
申请号：US1899728237
申请日：1899-08-23
申请人： HALL JULIAN DUANE
发明人： HALL JULIAN DUANE
IPC分类号： E06C1/20
CPC分类号： E06C1/20
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公开(公告)号：US20240352792A1
公开(公告)日：2024-10-24
申请号：US18136150
申请日：2023-04-18
申请人： Nicolas Ramirez
发明人： Nicolas Ramirez
摘要： A ladder and entertainment combination system for reaching high areas and playing audio files includes a ladder assembly with a cap, a front support, and a rear support. The cap is coupled to the front support and the rear support. The rear support is pivotally coupled to the cap such that the rear support is movable toward the front support. An audio file player is mounted to the cap and is operable to play audio files.
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公开(公告)号：US20240328254A1
公开(公告)日：2024-10-03
申请号：US18129541
申请日：2023-03-31
申请人： iGas Inc
发明人： Peter Yuanbao Meng
摘要： A ladder including a ladder body and a positioning structure. The positioning structure is connected at the top of the ladder body and comprises a positioning connecting rod a pair of positioning legs. The positioning connecting rod is connected to the main body of the ladder and the positioning legs are connected to both ends of the positioning connecting rod. The positioning legs may include positioning links and a positioning plate. The positioning links are connected between the positioning connecting rod and the positioning plate. The positioning plate is used to secure the ladder body to a surface. When in use, the top of the ladder body can be fixed at a high place by the positioning structure. In fixing one end, the entire is more secure thereby improving the safety during use.
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公开(公告)号：US20240295145A1
公开(公告)日：2024-09-05
申请号：US18178497
申请日：2023-03-04
发明人： Dale Martin NEUBAUER
摘要： An apparatus and kit for conversion of a folding ladder to a mobile platform. The apparatus includes a folding ladder structure with mounting placements for affixing a pair of wheel attachments. The wheel attachments provide selective movement of a set of wheels between a ground-engaging position and an elevated non-ground-engaging position. The kit including the mounting placements and the wheel attachments capable of use with a folding ladder to provide stability and mobility of the ladder configured with the kit.
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公开(公告)号：US20240183220A1
公开(公告)日：2024-06-06
申请号：US18527149
申请日：2023-12-01
摘要： Ladder configurations and components are provided including a first assembly of rails and a second assembly of rails that are pivotable relative to each other between a collapsed configuration and an expanded configuration. A tray rotatably connected to a top cap of the ladder may include a convertible compartment, a pair of clamps, attachment points, and a ferromagnetic component. The tray may be rotatable relative to the top cap by operation of an adjustment member that locks or unlocks the tray. Rotation of the tray may position the tray in an upright position substantially parallel to the first assembly of rails and in a storage position substantially parallel to and behind the first assembly of rails.
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