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    Method and means of winding torsion spring
    241.
    发明授权
    Method and means of winding torsion spring 失效
    扭转弹簧的方法和方法

    公开(公告)号：US3921761A

    公开(公告)日：1975-11-25

    申请号：US46102374

    申请日：1974-04-12

    Applicant: UNIV IOWA STATE RES FOUND INC

    Inventor： VOTROUBEK LELAND C ,  NELSEN DUANE H

    IPC: F03G1/08 ,  E05F11/00

    CPC classification number: E05D13/1261 ,  E05Y2201/492 ,  E05Y2201/716 ,  E05Y2800/20 ,  E05Y2800/205 ,  E05Y2800/692 ,  E05Y2900/106 ,  F03G1/08

    Abstract: The torsion spring winding device of the present invention comprises a gear having annular teeth thereon and additionally having means for detachably securing the gear to the free end of a torsion spring. A worm gear support is rotatably mounted to the gear so as to permit the gear to rotate independently of the worm gear support. The worm gear support carries an elongated worm gear in driving engagement with the annular teeth of the gear, and additionally includes a stop means for engaging the wall upon which the torsion spring is mounted. The method of the present invention comprises attaching a rotatable gear member having a plurality of peripheral teeth thereon to the free end of a torsion spring, engaging the peripheral teeth of the gear member with a worm gear, holding the worm gear mechanism against swinging movement with respect to the spring whereby the worm gear prevents rotation of the gear member and the free end of the spring with respect to the fixed end of the spring, rotating the worm gear to drive the gear member in a rotational direction whereby the free end of the torsion spring is rotated with respect to the fixed end thereof, and detaching and removing the gear member from the spring.

    Abstract translation: 本发明的扭转弹簧卷绕装置包括在其上具有环形齿的齿轮，并且还具有用于将齿轮可拆卸地固定到扭转弹簧的自由端的装置。 蜗轮支撑件可旋转地安装到齿轮上，以允许齿轮独立于蜗轮支撑件旋转。 蜗轮架支承有与齿轮的环形齿驱动接合的细长蜗轮，并且还包括用于接合安装扭簧的壁的停止装置。

    Door open and close mechanism of machine tool
    244.
    发明授权
    Door open and close mechanism of machine tool 有权

    公开(公告)号：US11952815B2

    公开(公告)日：2024-04-09

    申请号：US17664229

    申请日：2022-05-20

    Applicant: OKUMA CORPORATION

    Inventor： Tetsunobu Nishinaka

    IPC: B60J5/06 ,  B23Q1/01 ,  E05D15/06 ,  E05D15/08

    CPC classification number: E05D15/08 ,  B23Q1/01 ,  E05D15/0621 ,  E05Y2201/684 ,  E05Y2201/716 ,  E05Y2201/722 ,  E05Y2800/71 ,  E05Y2900/608

    Abstract: A door open and close mechanism for opening and closing a plurality of doors in a machine tool including a cover. The door open and close mechanism includes a linkage mechanism and a slide mechanism. The linkage mechanism is disposed between an operation door and an intermediate door. The linkage mechanism associates the intermediate door with the opening and closing of the operation door. The slide mechanism is disposed between the operation door and the linkage mechanism. The slide mechanism enables the operation door alone to open and close by a predetermined moving distance. When the operation door is operated to open and close within the moving distance, the operation door alone opens and closes by the slide mechanism. When the operation door is operated to open and close beyond the moving distance, the intermediate door opens and closes in association through the linkage mechanism.

    OVERHEAD DOOR OPERATOR SYSTEM
    248.
    发明公开
    OVERHEAD DOOR OPERATOR SYSTEM 审中-公开

    公开(公告)号：US20230220715A1

    公开(公告)日：2023-07-13

    申请号：US17928981

    申请日：2021-06-17

    Applicant: Assa Abloy Entrance Systems AB

    Inventor： Magnus ABRAHAMSSON ,  Anton HANSSON

    IPC: E05F15/41 ,  E05F15/67

    CPC classification number: E05F15/41 ,  E05F15/67 ,  E05Y2201/408 ,  E05Y2201/434 ,  E05Y2201/684 ,  E05Y2201/716 ,  E05Y2201/724 ,  E05Y2400/36 ,  E05Y2400/40 ,  E05Y2400/44 ,  E05Y2400/52 ,  E05Y2400/302 ,  E05Y2600/46 ,  E05Y2900/106

    Abstract: The disclosure relates to a method at a control device (100) for controlling an overhead door operator system, the overhead door operator system (1) being configured for opening and closing an opening (2), and comprising a door frame (3) comprising a first frame section (4) at a first side (7) of the opening (2) and a second frame section (6) at a second side (5) of the opening (2). The operator system further comprises a door (8) arranged to be moved between an open and closed (C) position, the door (8) being movably connected to the door frame (3) and a drive unit (10) mounted on the door (8), the drive unit (10) comprising at least one motor (11) arranged to move the door (8) from the closed position (C) to the open position (O). An elongated transmission member (19) extends along the first side (7) of the opening (2) and the first frame section (4). The drive unit (10) further comprises a driven transmission member (18) in driving connection with the motor (11). The method comprises the steps of: detecting door movement; determining if detected door movement relates to unexpected door movement; and, if so, taking action so as to prevent more extensive damages. The disclosure further relates to an overhead door operator system for opening and closing an opening.

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