公开(公告)号：US09701525B1

公开(公告)日：2017-07-11

申请号：US15229096

申请日：2016-08-04

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: B66F11/04

CPC classification number: B66F11/04

Abstract: The elevating lift includes a stabilizer base with extendable legs to provide minimum to maximum stability during use and transport. A lift system is fixed to the stabilizer base, and a platform assembly is mounted to the top of the base to be selectively raised or lowered by the lift system. The lift system utilizes a plurality of telescoping cage assemblies interconnected to extend or retract relative to each other. A drive assembly with an extendable lift mast is mounted to the stabilizer base to act on the cage assemblies to raise or lower the same. A drive train coupled to the telescoping cage assemblies enables relative extension and retraction of the cage assemblies. An adjustable guardrail is mounted to a platform of the platform assembly to provide safety for the user.

公开(公告)号：US20170016519A1

公开(公告)日：2017-01-19

申请号：US14799098

申请日：2015-07-14

Applicant: KAN CUI ,  MARGARET C. LIU ,  SAMUEL K. LIU

Inventor： KAN CUI ,  MARGARET C. LIU ,  SAMUEL K. LIU

IPC: F16H25/14

CPC classification number: F16H25/14 ,  F16B21/02 ,  F16B37/042 ,  F16D11/16 ,  F16D2023/123

Abstract: The radially engaging coupling system comprises numerous embodiments for connecting two or more concentric components with radially extending or retracting bolts. Most embodiments include a ring having a plurality of Archimedean spiral slotted segments. Each bolt has a pin extending laterally therefrom to engage a corresponding slot in the ring. Rotation of the ring drives the pins and their bolts outward or inward to engage or disengage an outer component. Some embodiments have inwardly or outwardly spaced pin passages in the ring, rather than the spiral slots. The disc may comprise a snap ring. Another embodiment has two axially spaced spirally slotted rings, with a plurality of cylindrical rollers therebetween. Rotation of the rings drives the rollers inward or outward to engage corresponding axial grooves in the inner shaft. In another embodiment each bolt has an arcuate segment extending thereacross, to engage a corresponding circumferential groove in an outer component.

Abstract translation: 径向接合联接系统包括用于将两个或多个同心部件与径向延伸或缩回螺栓连接的许多实施例。 大多数实施例包括具有多个阿基米德螺旋槽段的环。 每个螺栓具有从其横向延伸的销以接合环中的相应槽。 环的旋转将销及其螺栓向外或向内驱动以接合或脱离外部部件。 一些实施例在环中具有向内或向外间隔开的销通道，而不是螺旋槽。 盘可以包括卡环。 另一个实施例具有两个轴向间隔开的螺旋形开槽环，其间具有多个圆柱形辊。 环的旋转将辊向内或向外驱动以与内轴中相应的轴向凹槽啮合。 在另一个实施例中，每个螺栓具有在其周围延伸的弓形段，以与外部部件中的对应的周向凹槽接合。

公开(公告)号：US09303741B2

公开(公告)日：2016-04-05

申请号：US14099186

申请日：2013-12-06

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: F16H25/08 ,  F16H25/16 ,  F16H25/20 ,  F16H25/14 ,  E05F15/611 ,  E05F15/53

CPC classification number: F16H25/20 ,  E05F15/53 ,  E05F15/611 ,  E05Y2201/638 ,  F16H25/08 ,  F16H25/14 ,  Y10T74/1828 ,  Y10T74/18296 ,  Y10T74/18576

Abstract: The linear-to-rotary actuator includes an elongated drive member constrained to linear movement, and a rotary member constrained to rotary movement. The elongated drive member has a coupling end and an engaging member that projects from the coupling end. The rotary member has a track defining an Archimedean spiral. The track is adapted to receive the engaging member. The engaging member is constrained to slide in the track such that linear movement of the elongated member effects rotation of the rotary member. The track may be a slot, a groove, or other guide. Alternatively, instead of a track defined directly in the rotary member, the actuator may include a linking member (such as a disk or rectangular bracket) attached to the rotary member, the linking member having a track defining an Archimedean spiral defined therein, the engaging member being slidable in the track to convert linear motion into rotary motion.

公开(公告)号：US09068634B2

公开(公告)日：2015-06-30

申请号：US14073589

申请日：2013-11-06

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: F16H21/50 ,  F16H25/14

CPC classification number: F16H25/14 ,  F16H21/50 ,  Y10T74/18296 ,  Y10T74/18568

Abstract: The radially engaging systems includes a housing having at least one guide channel formed therein. At least one sliding member is slidably received in the guide channel to selectively extend or retract therein in order to connect and lock mechanical components together. Each sliding member is provided with an elongate follower. A rotator is operatively mounted to the housing. The rotator includes at least one guide curve based upon an Archimedian spiral. The follower rides inside the guide curve. Selective rotation of the rotator converts the rotation into linear movement of the connected sliding member. Conversely, selective linear movement of the sliding member converts the same into rotation of the rotator.

公开(公告)号：US11130519B1

公开(公告)日：2021-09-28

申请号：US17324041

申请日：2021-05-18

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: B62D7/14 ,  B62D21/03 ,  B62D7/18 ,  B62D21/14 ,  B62D7/15

Abstract: The parallel maneuvering system is a steering system for portable devices, portable platforms and the like, allowing individual wheels to be steered in a parallel and simultaneous manner. The parallel maneuvering system includes a first coupler and a second coupler, which are slidably mounted with respect to one another, and which each include a pair of arms for eccentric pivotal attachment to a corresponding pair of wheel assemblies. The first and second couplers are mounted within a hollow chassis, and the wheel assemblies are mounted to the hollow chassis such that respective wheels thereof are mounted external to the hollow chassis, and respective eccentric crank arms thereof are mounted within the hollow chassis. At least one linear actuator may be provided for selectively driving sliding movement of the first coupler with respect to the second coupler.

公开(公告)号：US11015664B1

公开(公告)日：2021-05-25

申请号：US17157922

申请日：2021-01-25

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: F16D51/00 ,  F16D53/00 ,  F16D51/12 ,  F16D49/00 ,  F16D125/40 ,  F16D121/24 ,  F16D127/02 ,  F16D125/20

Abstract: The rotation-actuated drum brake uses both inner and outer sets of brake shoes, which are actuated in a radial manner, to contact the inner and outer surfaces of a cylindrical brake drum. The inner and outer sets of brake shoes are disposed within an annular brake housing and are constrained to move radially. An actuator selectively drives rotation of a rotating disc having a plurality of arcuate slots defined therein. This drives roller guides of the inner and outer sets of brake shoes to roll within respective ones of the arcuate slots. The driven rolling of the roller guides drives the radial motion of the inner and outer sets of brake shoes to simultaneously frictionally engage the inner and outer surfaces of the cylindrical brake drum.

公开(公告)号：US10730729B1

公开(公告)日：2020-08-04

申请号：US16802546

申请日：2020-02-26

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: B66F11/04 ,  B66F7/06 ,  E04G1/34 ,  B66F3/22

Abstract: The scissor lift includes a horizontally collapsible base, a vertically collapsible frame mounted on the base, a horizontally foldable platform mounted on top of the vertically collapsible frame, and a plurality of wheels mounted on the base. The horizontally and vertically collapsible scissor lift is steerable and the plurality of wheels may be coupled such that they each rotate about a vertical axis synchronously with respect to one another to steer the lift. Further, at least one of the wheels may be self-driving to controllably propel the horizontally and vertically collapsible scissor lift. One or more winches with associated cables may be used to selectively raise and lower the vertically collapsible frame.

公开(公告)号：US10005652B1

公开(公告)日：2018-06-26

申请号：US15801136

申请日：2017-11-01

Applicant: Kan Cui ,  Margaret K. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret K. Liu ,  Samuel K. Liu

IPC: B66F11/04 ,  E04G1/24 ,  E04G1/22 ,  A47C9/10

CPC classification number: B66F11/04 ,  A47C9/105 ,  B60G2200/322 ,  B60G2204/46 ,  B60G2400/63 ,  E04G1/22 ,  E04G1/24 ,  E04G2001/242

Abstract: The elevating lift with a stabilized movable base includes a base with extendable legs that provide minimum to maximum adjustable stability during use and transport. A lift system is mounted on the base, and a platform assembly is mounted on top of the lift system for selective raising or lowering. Each extendable leg supports a caster, rendering the base movable, and selective extension and retraction of the legs adjusts the stability of the lift. The plurality of legs can be further driven to simultaneously rotate about the vertical axis to steer the lift. The stabilized movable base is further alternatively used in combination with a stool, providing minimum to maximum stability during use and transport of seating, and multiple elevating lifts may be used to support linked platform assemblies in various configurations.

公开(公告)号：US09789902B1

公开(公告)日：2017-10-17

申请号：US15480300

申请日：2017-04-05

Applicant: Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： Kan Cui ,  Margaret C. Liu ,  Samuel K. Liu

IPC: B62D7/14 ,  B60G11/16 ,  B60G17/015 ,  B62D7/15

CPC classification number: B62D7/144 ,  B60G11/16 ,  B60G17/015 ,  B60G2202/10 ,  B60G2202/41 ,  B60G2202/422 ,  B60G2202/442 ,  B62D7/1536 ,  B62D7/1545

Abstract: The simultaneous maneuvering system includes a base, a plurality of wheel assemblies including at least one wheel rotatably mounted to the base, a plurality of steering rotors rotatably mounted to the base and the wheel assemblies, and a drive assembly having a drive frame coupled to each of the rotors. Operation of the drive assembly causes simultaneous rotation of the rotors and, thereby, positions the wheel of each corresponding wheel assembly in a desired direction.

公开(公告)号：US20170088170A1

公开(公告)日：2017-03-30

申请号：US15377528

申请日：2016-12-13

Applicant: KAN CUI ,  Margaret C. Liu ,  Samuel K. Liu

Inventor： KAN CUI ,  Margaret C. Liu ,  Samuel K. Liu

IPC: B62D7/08 ,  F16H21/12 ,  A47C7/00

CPC classification number: F16H21/12 ,  A47C7/006 ,  F16H21/14

Abstract: The simultaneous actuating mechanism for parallel axis rotors includes a base and a plurality of rotating rotors mounted in spaced relation inside the base, the rotors having parallel axes of rotation. A crank pin extends from each rotor at a position offset from the corresponding axis of rotation. A driving assembly is coupled to the crank pin of all the rotors. Operation of the driving assembly causes simultaneous rotation of the rotors to facilitate various mechanical functions, such as threading, steering, and reciprocation of multiple elements.