Screw pegging device
    12.
    发明授权

    公开(公告)号:US11045243B2

    公开(公告)日:2021-06-29

    申请号:US16626882

    申请日:2019-01-29

    发明人: Xiaomin Huang

    IPC分类号: A61B17/88 A61B17/86

    摘要: The invention provides a screw pegging device. The screw pegging device comprises a holding handle, a handle rod, a sleeve and a screw part, wherein the sleeve is provided with a perforative cavity, and clamping grooves are arranged at two ends of the cavity; a groove opening running through the cavity is arranged in the side wall of the sleeve, a limiting clamping part is arranged in the groove opening, one end of the limiting clamping part is connected with the groove opening, and the other end of the limiting clamping part is provided with a convex clamping edge; the screw part is a long rod, one end of the long rod is provided with a screw head, a first clamping part is arranged at the joint of the long rod and the screw head, and an annular groove edge is arranged on the side wall of the long rod; and the holding handle sleeves one end of the handle rod, the other end of the handle rod is inserted and clamped in a third clamping groove of the sleeve, an axial insertion hole is formed in the handle rod, the long rod runs through the cavity and is inserted and embedded in the insertion hole, a fourth clamping groove is in clamping connection with the first clamping part, and the convex clamping edge is embedded and clamped in the annular groove edge. In the screw pegging device, the firm connecting is guaranteed by utilizing the clamping groove structure, the screw part long rod extends into the handle rod, then the strength of the joint of the handle rod and the screw part is enhanced, meanwhile, through the limiting clamping part, the axial limiting fixing is realized between the sleeve and screw part, and the disassembly is convenient.

    Web member for truss with high sectional strength and assembled truss

    公开(公告)号:US12116781B1

    公开(公告)日:2024-10-15

    申请号:US18571629

    申请日:2023-09-18

    IPC分类号: E04C3/08 E04C3/04

    CPC分类号: E04C3/08 E04C2003/0491

    摘要: A web member for a truss with high sectional strength and an assembled truss is formed by transforming ends of an M-shaped web member into two double-layer connecting plates for connection through end transformation, grooving and drilling while steel consumption is not increased; and connection joints of a conventional truss are usually controlled by bearing capacities of bolts of which the sectional strength is insufficient, the thickness of bolt connections on ends of the web member is increased by flattening, and thus, pressure bearing capacities of the bolts will be greatly improved. The truss provided by the present utility model is a fully-bolted truss, connections of two adjacent web members and chord members are connected to intersection points of center-of-gravity lines of the web members and the chord members.

    Method for making a metal material composite

    公开(公告)号:US12083567B2

    公开(公告)日:2024-09-10

    申请号:US17917224

    申请日:2021-11-01

    摘要: A method for making a metal material composite includes: contacting a first surface of a first plate with a second surface of a second plate; placing the first plate and the second plate in a recess in a circumferential direction of a first roller such that a third surface of the second plate contacts a bottom wall of the recess in a circumferential, the third surface being opposite the second surface, the first plate having a greater hardness than the second plate; and controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, where a fourth surface of the first plate contacts a surface of the second roller and the fourth surface is opposite the first surface during the rolling.

    Stent delivery system
    19.
    发明授权

    公开(公告)号:US11684499B2

    公开(公告)日:2023-06-27

    申请号:US16980565

    申请日:2018-09-09

    IPC分类号: A61F2/95 A61F2/966

    摘要: A stent delivery system is described. The system includes an outer sleeve assembly with an outer sleeve body, an outer sleeve handle fixed to one end of the outer sleeve body, and an outer sleeve tip connected to an opposing end of the outer sleeve body. The system also includes an inner sleeve assembly, which has a push tube sleeved in the outer sleeve body, an inner sleeve handle fixed to the rear end of the push tube, a stent placing tube connected to the front end of the push tube, and an inner sleeve tip set at the front end of the stent placing tube. The system also includes a snap ring fixed on an outer wall of the push tube and provided between the outer sleeve handle and the inner sleeve handle. The outer sleeve tip includes a stepped surface.

    Series wound direct-current motor driving device and equipment

    公开(公告)号:US11387717B2

    公开(公告)日:2022-07-12

    申请号:US17296241

    申请日:2019-12-27

    摘要: The invention provides a series wound DC motor driving device and electrical equipment. The series wound DC motor driving device provided by the invention comprises a series wound DC motor, a DC power supply and a chopper, wherein the chopper comprises m chopping units; control signals comprise m unit control signals formed according to preset phase stagger rules and corresponding to the m chopping units separately, and each unit control signal comprises w switch control signals corresponding to w switch control ends in the corresponding chopping units; m pairs of power output terminals are formed at m first power output ends and m second power output ends of the chopping units correspondingly, and m pairs of external terminals of the series wound DC motor are connected with m pairs of power output terminals correspondingly one by one; m is a positive integer not smaller than 2, and w is 1, 2 or 4.