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公开(公告)号：US11613290B2
公开(公告)日：2023-03-28
申请号：US16388773
申请日：2019-04-18
摘要： A hand-truck frame system includes a main frame, a bed frame, and pair of multi-wheel assembles coupled to the main frame and rotatable to provide improved climbing capabilities over certain terrain, such as stairs. The multi-wheel assemblies can have four wheels radially mounted about respective hubs of the first and second multi-wheel assemblies.
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公开(公告)号：US11518424B2
公开(公告)日：2022-12-06
申请号：US16752581
申请日：2020-01-24
申请人： Gary M. Kemp
发明人： Gary M. Kemp
摘要： The stair-climbing wheeled carrier has a U-shaped frame defined by a pair of elongated parallel handles and a crossbeam extending between the ends of the handles. Each handle has an axle mount depending therefrom having a star wheel or spider wheel mounted thereon. A dual shaft worm drive motor is mounted on the frame, the shafts driving chain drives connected to the wheels. A throttle extends from one of the handles, and controls leaf springs that operate switches for actuating the reversible motor and returning the throttle to neutral when released. A payload is attached to brackets mounted on the handles. The payload may be a seat for a person needing assistance attending/descending stairs, or a basket for carrying packages or other items upstairs. In use, an assistant uses the handles to support the frame while operating the motor to activate the wheels for climbing stairs.
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3.发明授权公开(公告)号：US11312404B2
公开(公告)日：2022-04-26
申请号：US16987342
申请日：2020-08-06
申请人： Yonghai Fei , Zhenhua Fei
发明人： Yonghai Fei , Zhenhua Fei
摘要： Disclosed a dual-function electric stair-climbing vehicle. A bicycle-like saddle is mounted at an upper part of a frame of the vehicle; and a worm gear reducer is mounted at a middle part of the vehicle for driving two rotating legs to climb up or downstairs. The vehicle is mainly used for fire rescue in high-rise buildings, equipment maintenance of high-rise buildings when no elevator is available, and fast transportation of equipment, materials and firefighters or maintenance men upstairs. When the width of a corridor is greater than 1.1 m, the vehicle can be rode upstairs directly with people and goods; when the width is less than 1.1 m and greater than 0.9 m, people need to get off and make a turn; and when the width is less than 0.9 m, the vehicle is not available. The dimension of the frame is about 1200×550×380 mm.
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公开(公告)号：US20210380154A1
公开(公告)日：2021-12-09
申请号：US17335695
申请日：2021-06-01
摘要： A modular and lightweight Stair Climber for Caskets is provided. The Stair Climber for Caskets is uniquely designed and configured with a trolley frame and four sets of wheels arranged and affixed at the four ends of the trolley frame respectively. In the depicted embodiment, each set of wheels comprises three wheels spaced an equal distance from each other that rotate together about a horizontal axis for easy navigation. The Stair Climber for Caskets further comprises wheel plates attached to the set of wheels. The Stair Climber for Caskets is designed ergonomically with the right configuration for ensuring easy movement up and down stairs of different heights and inclinations.
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公开(公告)号：US11155120B2
公开(公告)日：2021-10-26
申请号：US16650251
申请日：2018-06-20
申请人： YUEI CO., LTD.
发明人： Kota Ojima , Tomoki Hada
摘要： To provide a stage-corresponding caster device being entirely compact, able to smoothly and stably work, and able to easily get over a stage end face, a holder main body 1 attached to an attached member B and having a pair of left and right side wall portions 10, a main wheel supporting member 2 in which the main wheel 7 is pivoted to a lower portion 2b and an upper portion 2a is pivoted to the holder main body 1, a sub wheel supporting member 3 in which the sub wheel 8 is pivoted to a front portion 3c and a rear portion 3d is pivoted to the main wheel supporting member 2 coaxially with the main wheel 7, and a slide roller 30 attached to the sub wheel supporting member 3 on a forward position to the main wheel 7, are provided; and the holder main body 1 has a guiding groove 13 inclined backward and downward in side view on the side wall portion 10 to guide the slide roller 30, the front portion 3c of the sub wheel supporting member 3 is oscillated downward by contact of the main wheel 7 with the stage end face Ja, the sub wheel 8 is pressed to the stage upper face Jb, and the main wheel 7 climbs over the stage end face Ja.
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公开(公告)号：US20210114646A1
公开(公告)日：2021-04-22
申请号：US17067757
申请日：2020-10-11
申请人： Tadao Hashimoto
发明人： Tadao Hashimoto
IPC分类号： B62B5/02
摘要： The present invention discloses a load-carrying device such as a suitcase, a carry-bag and a hand truck, which can ascend and descend stairs without changing the position of the person relative to the device. The load-carrying device is constructed with a main frame which defines a main plane of the device, at least two main wheels, and a support frame which can swing out of the main plane. The support frame is equipped with a caterpillar mechanism and optional bottom wheels. When ascending stairs, the support frame is pushed against the main frame by the edge of the stairs and the caterpillar with a ratchet mechanism helps slide the load-carrying device upward. When descending stairs, the support frame swings down toward the lower step before the main wheels go off the upper step so that the support frame enables soft-landing of the main wheels.
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公开(公告)号：US10908612B2
公开(公告)日：2021-02-02
申请号：US15940377
申请日：2018-03-29
发明人： Saurabh R. Palan , Manuel Ahumada
IPC分类号： G05D1/00 , B25J9/06 , B25J11/00 , B25J5/00 , G05D1/02 , B62B3/14 , B62B5/02 , G06K9/00 , B62B5/00 , B62D57/028 , B62D57/02 , B62D57/024 , G06Q30/06 , B62D25/08
摘要： A system may include a vehicle having a storage area and a guide rail configured to extend from the storage area. The system may further include a robot having a support portion comprising a placement surface and a base. The robot may also include a plurality of descendible wheels. The robot may also further include a plurality of legs, each connecting the support portion to one of the plurality of descendible wheels.
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公开(公告)号：US20190322302A1
公开(公告)日：2019-10-24
申请号：US16388773
申请日：2019-04-18
摘要： A hand-truck frame system includes a main frame, a bed frame, and pair of multi-wheel assembles coupled to the main frame and rotatable to provide improved climbing capabilities over certain terrain, such as stairs. The multi-wheel assemblies can have four wheels radially mounted about respective hubs of the first and second multi-wheel assemblies.
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公开(公告)号：US20190291765A1
公开(公告)日：2019-09-26
申请号：US16435277
申请日：2019-06-07
申请人： Anghel Muscocea
发明人： Anghel Muscocea
摘要： Device for manually lifting a load such as a cart, suitcase and the like, making it easier to ascend and descend staircases and various obstacles. The device has a first part comprising a frame secured to wheels, and handles being fixed to the frame. A second part comprises a load support secured to the wheels and a load being mounted in a fixed manner on the load support, the second part being able to slide with respect to the first part by the action of a telescopic lever arm in order to ascend a step of a staircase in two phases, the telescopic lever arm being fixed to the handles by a first articulation, a second articulation connecting the telescopic lever arm to a transmission which is in turn connected by a third articulation to the load support of the second part.
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公开(公告)号：US10351155B1
公开(公告)日：2019-07-16
申请号：US15970210
申请日：2018-05-03
摘要： A laundry cart comprised of a base assembly, casters, steel frame assembly, handle, and fabric hamper body. The quadrilateral base includes a pair of longitudinally spaced U-shaped members interposed between a pair of longitudinal slats and a plurality of transverse slats fixed together in a common lattice fashion. The steel frame assembly is comprised of uprights along the periphery of the base platform, which includes offset uprights and corner uprights. The corner uprights are attached above the base, thereby reducing the shear stress on the laundry cart. The Z-shaped offset uprights allow all the uprights on the short side and long side of the cart to be on the same plane. The hamper body is sized and configured to seat within the uprights and crossmembers. The hamper body includes reinforced trim along the top periphery, which is constructed of a sewn soft rubber to prevent scuffing and damage to walls and doors.
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