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公开(公告)号：US20210403064A1
公开(公告)日：2021-12-30
申请号：US17361361
申请日：2021-06-29
发明人： Wenjie Wang , Zhengming He , Libo Song
摘要： A collapsible children's pull wagon having four wheels and an upper loop frame pivotably attached to a lower loop frame. There is a hub to which a pull bar and a front axle is coupled to. The front axle is capable of rotating along a vertical axis of the hub in order to change the direction of travel. The pull wagon can easily collapse by releasing a support frame which directly connects the rear end of the upper loop frame to the rear end of the lower loop frame.
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公开(公告)号：US11116323B2
公开(公告)日：2021-09-14
申请号：US16843857
申请日：2020-04-08
发明人： Wenjie Wang , Zhengming He , Libo Song
IPC分类号： A47C19/14 , A47C17/72 , A47C17/70 , A47C17/66 , A47C19/12 , A47B9/02 , A45F4/06 , A47C17/64 , A47B3/04 , A47C17/76
摘要： This folding cot has a frame including a first rail member and a second rail member, a sheet material coupled to the frame and extending between the first and second rail members thereof, and a plurality of foldable leg assemblies where each leg assembly being pivotally connected to the first and second rail members, and wherein each leg assembly further includes a first leg pivotally coupled to a second leg. There is a tension spring having a first end attached to the first leg and a second end attached to the second leg.
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公开(公告)号：US11247708B2
公开(公告)日：2022-02-15
申请号：US16281037
申请日：2019-02-20
发明人： Wenjie Wang , Zhengming He , Libo Song
摘要： A folding wagon allowing a user initiate a folding action by pressing or stepping down on a lever disposed on the front end, the rear end, or both ends of the folding wagon.
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公开(公告)号：US20200315361A1
公开(公告)日：2020-10-08
申请号：US16843857
申请日：2020-04-08
发明人： Wenjie Wang , Zhengming He , Libo Song
摘要： A folding cot having a tension spring disposed between two legs and corner straps that remain attached to the rails during folding and unfolding of the cot.
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公开(公告)号：US20240270298A1
公开(公告)日：2024-08-15
申请号：US18434790
申请日：2024-02-06
发明人： Libo Song , Wenjie Wang , Zhengming He
CPC分类号： B62B3/007 , B62B3/025 , B62B5/067 , B62B2205/06
摘要： A gathering-type folding cart frame comprises a plurality of support mechanisms and corresponding wheels arranged under the support mechanisms, a central folding mechanism is arranged between the support mechanisms, enclosure folding mechanisms are arranged on the cart frame, and a handle is arranged on one side of the cart frame in the direction of travel; after the central folding mechanism is folded, the support mechanisms gather towards the central folding mechanism. The invention adopts a gathering-type folding method, and can be folded in the length direction and width direction at the same time after folding, the folding method is simple, easy to use, the folded volume is small, there is no sharp angle structure, and there is no safety hazard. The invention is provided with enclosures on the top of the cart frame, which can improve the strength of the top of the cart frame.
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公开(公告)号：US11673591B2
公开(公告)日：2023-06-13
申请号：US17361361
申请日：2021-06-29
发明人： Wenjie Wang , Zhengming He , Libo Song
摘要： A collapsible children's pull wagon having four wheels and an upper loop frame pivotably attached to a lower loop frame. There is a hub to which a pull bar and a front axle is coupled to. The front axle is capable of rotating along a vertical axis of the hub in order to change the direction of travel. The pull wagon can easily collapse by releasing a support frame which directly connects the rear end of the upper loop frame to the rear end of the lower loop frame.
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公开(公告)号：US20200207392A1
公开(公告)日：2020-07-02
申请号：US16281037
申请日：2019-02-20
发明人： Wenjie Wang , Zhengming He , Libo Song
摘要： A folding wagon allowing a user initiate a folding action by pressing or stepping down on a lever disposed on the front end, the rear end, or both ends of the folding wagon.
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