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公开(公告)号：US20230256944A1
公开(公告)日：2023-08-17
申请号：US17947591
申请日：2022-09-19
摘要： A jack assembly is shown and describe. The jack assembly may include a first tube having first and second end portions and a central portion between the first and second end portions, and a second tube positioned within the first tube and movable with respect to the first tube. The jack assembly may also include an expanded portion on the first tube, the expanded portion having a larger inner diameter than an inner diameter of the central portion, and a bushing attached to the expanded portion, where the bushing generally prevents contact between the first and second tubes.
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公开(公告)号：US20220402111A1
公开(公告)日：2022-12-22
申请号：US17351060
申请日：2021-06-17
申请人： Pei-Yu Hsu
发明人： Pei-Yu Hsu
摘要： A transmission device for lifting a sickbed contains a first casing, a second casing, a power input assembly, a power output assembly, and multiple screw elements. The first casing includes a first rotatable connection portion, a second rotatable connection portion, a first space, and multiple locking orifices. The second casing includes a third rotatable connection portion, a fourth rotatable connection portion, a second space, and multiple coupling orifices. The power input assembly includes an input shaft and a first bevel gear. The power output assembly includes an output shaft and a second bevel gear. The multiple screw elements are inserted through the multiple coupling orifices of the second casing to screw with the multiple locking orifices of the first casing.
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公开(公告)号：US20180236981A1
公开(公告)日：2018-08-23
申请号：US15898750
申请日：2018-02-19
摘要： A jack assembly is shown and describe. The jack assembly may include a first tube having first and second end portions and a central portion between the first and second end portions, and a second tube positioned within the first tube and movable with respect to the first tube. The jack assembly may also include an expanded portion on the first tube, the expanded portion having a larger inner diameter than an inner diameter of the central portion, and a bushing attached to the expanded portion, where the bushing generally prevents contact between the first and second tubes.
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公开(公告)号：US09937903B2
公开(公告)日：2018-04-10
申请号：US14768332
申请日：2014-02-19
发明人： Jurgen Van Den Bos
IPC分类号： B60S9/02 , B60S9/18 , F16M11/22 , F16M11/24 , B60S9/08 , B66F3/16 , B60D1/66 , B62D63/08 , F16H1/06
CPC分类号： B60S9/18 , B60D1/665 , B60S9/08 , B62D63/08 , B66F3/16 , F16H1/06 , F16M11/22 , F16M11/24 , Y10T74/19688
摘要： A jack assembly including a telescopic column driven via a gear box, wherein: the gear box is coupled to a rotary input of a drive mechanism that extends and retracts the column; the gear box has only a single input gear and a single output gear that is coupled to the drive mechanism; and the input gear has a connector adapted to be engaged and driven by a portable, hand-held power tool. A jack assembly with a gear box for use as a jockey wheel for attachment to a towed vehicle, to raise and lower a draw bar of the vehicle is also provided.
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公开(公告)号：US20170369294A1
公开(公告)日：2017-12-28
申请号：US15631096
申请日：2017-06-23
IPC分类号： B66F9/075 , B60G21/05 , B66F9/10 , B62D33/06 , B66F3/16 , B62D33/073 , B66F9/08 , B66F9/22 , B62D33/063
CPC分类号： B66F9/07586 , B60G21/05 , B62D33/0608 , B62D33/0636 , B62D33/073 , B66F3/16 , B66F9/082 , B66F9/105 , B66F9/22
摘要： The invention relates to an industrial truck comprising a chassis (6), which is supported by at least two front wheels (2) and by at least one rear wheel (3) on the ground (4), a mast (8) for a load-carrying apparatus (36), which is arranged in an upright position thereon in a mast support region (54) of the chassis (6), wherein the front wheels (2) are rotatably arranged on wheel arms (50, 50) that protrude forwards from the mast support region (54) of the chassis (6), and means (62, 64; 162, 164; 262, 264) for suppressing and reducing vibrations, wherein at least one of the wheel arms (50, 50), preferably both wheel arms (50, 50), is/are split into at least two wheel arm portions (50a, 50b), which are mounted by means of a bearing arrangement (56; 156) so as to be able to perform movements relative to one another, wherein the means for suppressing or reducing vibrations are designed or operable to influence relative movements of the wheel arm portions (50a, 50b), in order to ensure that any impacts owing to unevenness of the ground during travel can only be passed on to the chassis (6) and the mast (8) by means of the wheel arms (50, 50) in a reduced, and absorbed and damped manner, and that any mast vibrations are damped.
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公开(公告)号：US07258313B2
公开(公告)日：2007-08-21
申请号：US10809598
申请日：2004-03-24
申请人： Edward Gabriel
发明人： Edward Gabriel
CPC分类号： A47L15/4253 , D06F39/125 , F16M7/00 , F16M11/18 , F16M11/42 , F16M2200/08 , F25D23/00 , F25D2323/0011 , Y10T74/18792
摘要： A device for leveling an object on uneven or sloping floors. The device is comprised of a housing with a substantially hollow portion having a worm gear, a driven gear, and an elevation shaft with threads on at least a portion of the shaft's external surface. The worm gear operably engages the driven gear, which in turn operably engages the elevation shaft. When the worm gear is rotated in opposite directions, concomitant rotations of the driven gear cause the elevation shaft to move axially up or down, thereby providing leveling motions to an object to which the device is attached. A pad may be attached to one end of the elevation to prevent scratching the surface on which the object rests. The hollow portion of the housing is configured to provide at least one load-bearing surface such that no separate bearings are required with the device.
摘要翻译： 用于在不平坦或倾斜的地板上调平物体的装置。 该装置包括具有大致中空部分的壳体，该壳体具有蜗轮，从动齿轮和在轴的外表面的至少一部分上具有螺纹的升降轴。 蜗轮可操作地接合从动齿轮，从动齿轮又可操作地接合升降轴。 当蜗轮沿相反方向旋转时，从动齿轮的伴随转动使得升降轴向上或向下轴向移动，由此向装置所附着的物体提供调平运动。 垫可以附接到高度的一端，以防止划伤物体所在的表面。 壳体的中空部分构造成提供至少一个承载表面，使得在该装置中不需要单独的轴承。
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公开(公告)号：US3934852A
公开(公告)日：1976-01-27
申请号：US603435
申请日：1975-08-11
申请人： Bernard R. Weber , David W. Wendt
发明人： Bernard R. Weber , David W. Wendt
CPC分类号： B60D1/66 , B60S9/16 , B66F3/02 , Y10T74/19614 , Y10T74/1967
摘要： A jack for supporting and adjusting the elevation of a trailer tongue comprises a ground support post, having either a caster wheel or foot plate at its lower end, extending downwardly through a jack mechanism housing which is bolted to the trailer tongue. The post can be raised or lowered either by means of a rotatable crank extending from the housing or, alternately, after manual release of latching means in the housing and tilting of the crank, by manually sliding the post. The post has a toothed rack affixed along one side thereof. The mechanism in the housing comprises a pivotally movable support member on which a crank-driven worm and an intermeshing worm gear are rotatably mounted. The support member is spring biased and releasably latched into an upward position wherein the worm gear engages the rack (and functions as a pinion gear) and manual rotation of the crank is necessary to move the post up or down. Upon manual release of the latch, tilting of the crank moves the support member to a downward position wherein the worm gear is disengaged from the rack, whereupon the post is free to be slid manually to a desired position.
摘要翻译： 用于支撑和调节拖车舌头的高度的千斤顶包括地面支撑柱，其下端具有脚轮或脚板，向下延伸通过螺栓连接到拖车舌头的千斤顶机构壳体。 柱可以通过从壳体延伸的可旋转曲柄升高或降低，或者通过手动滑动柱体，手动释放壳体中的闩锁装置和曲柄倾斜。 该柱具有沿其一侧固定的齿形齿条。 壳体中的机构包括可枢转地运动的支撑构件，曲柄驱动的蜗杆和相互啮合的蜗轮可旋转地安装在该支撑构件上。 支撑构件被弹簧偏置并可释放地锁定到向上的位置，其中蜗轮啮合齿条（并且用作小齿轮），并且需要手动旋转曲柄以使柱升高或降低。 当手动释放闩锁时，曲柄的倾斜将支撑构件移动到向下位置，其中蜗轮与齿条脱离，于是该柱自由地被手动地滑动到期望的位置。
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公开(公告)号：US3921958A
公开(公告)日：1975-11-25
申请号：US56115475
申请日：1975-03-24
申请人： DUTTON LAINSON CO
摘要： A tongue jack includes a vertical channel member having a rack positioned in a longitudinal slot of the channel member. A caster wheel is attached at one end of the channel member. A housing which may be mounted on a tongue includes a drive gear and a pinion. The housing wraps around the channel member so that the pinion may translate the housing relative to the channel member and thereby elevate or lower the tongue.
摘要翻译： 舌头插孔包括垂直通道构件，其具有定位在通道构件的纵向狭槽中的齿条。 脚轮连接在通道构件的一端。 可以安装在舌头上的壳体包括驱动齿轮和小齿轮。 壳体围绕通道构件缠绕，使得小齿轮可以相对于通道构件平移壳体，从而升高或降低舌头。
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公开(公告)号：US3902699A
公开(公告)日：1975-09-02
申请号：US41978373
申请日：1973-11-28
申请人： BRACKETT ROBERT R
发明人： BRACKETT ROBERT R
摘要： Rests for receiving portions of the propeller of an aircraft capable of supporting the weight of the aircraft without damage to said propeller are connected to the extensible portion of a jack having its base resting on legs equipped with suitable adjustments to position said rests securely beneath the propeller before lifting begins. The legs are pivoted on bases allowing said rests to follow the fore and aft movement of the aircraft as said aircraft is raised vertically by the jack.
摘要翻译： 用于接收能够支撑飞机重量而不损坏所述螺旋桨的飞行器的螺旋桨的部分的休息室连接到千斤顶的可延伸部分，该千斤顶的基座搁置在配备有适当调节的腿上，以将所述搁板牢固地定位在螺旋桨下方 起重开始前。 当所述飞机由千斤顶垂直升起时，腿部在基座上枢转，允许所述搁板跟随飞行器的前后运动。
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公开(公告)号：US3844535A
公开(公告)日：1974-10-29
申请号：US13027871
申请日：1971-04-01
申请人： DOROUGH J
发明人： DOROUGH J
摘要： A portable electric automobile jack that raises and lowers the bumper of a vehicle in a smooth, continuous motion using electric power produced by the automobile but the structure of which is otherwise independent from the body of the automobile, thereby enabling the jack to be disassembled, transported to other vehicles when needed and stored in the trunk of the automobile.
摘要翻译： 一种便携式电动汽车千斤顶，其使用由汽车产生的电力而平滑且连续地运动的车辆的保险杠，但是其结构以其它方式独立于汽车的主体，从而能够拆卸千斤顶， 在需要时运送到其他车辆并储存在汽车后备箱中。
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