Door opener capable of controlling door closing speed

    公开(公告)号:US11851935B1

    公开(公告)日:2023-12-26

    申请号:US17953773

    申请日:2022-09-27

    Inventor: Hung-Jen Tien

    Abstract: A door opener capable of controlling the door closing speed includes a driving device and a generator mode operating module electrically connected to the driving device. The driving device includes a motor which can be supplied with power to pivot a door from an open position to a closed position. The driving device detects the position of the door by a switch. When pivotal movement of the door is achieved without supplying power to the door, the pivotal movement sets the generator mode operating module to a generator mode or a non-generator mode. In the generator mode, the motor is impeded by the electromagnetic resistance, such that the pivoting speed of the door is reduced. In the non-generator mode, the motor is not impeded by the electromagnetic resistance, such that the pivoting speed of the door is increased.

    Door closer with power close
    557.
    发明授权

    公开(公告)号:US11829164B2

    公开(公告)日:2023-11-28

    申请号:US17018075

    申请日:2020-09-11

    Inventor: Dustin Lawhon

    Abstract: A door closer may utilize a door closing device (e.g., spring) and a force adjustment device (e.g., a motor) in order to allow for manual door opening and assisted door closing. During operation, as a door is manually opened, the spring is loaded (e.g., compressed or tensioned) above its pre-loaded closed position state. Once manual opening is completed, the spring that is loaded during opening begins returning to the pre-loaded closed position state, and thus, moves the door automatically towards the closed position. Depending on the pre-loaded spring setting, the closing force of the door may not be enough to close the door, or to close the door with the preferred force. As such, during closing a controller may engage a motor not to drive the door directly, but to increase the pre-load of spring to increase the closing force in order to allow the door to close as preferred.

    Passage barrier and method for producing a passage barrier

    公开(公告)号:US11821257B2

    公开(公告)日:2023-11-21

    申请号:US17283751

    申请日:2019-10-11

    Abstract: A passage barrier has first and second guide elements that cooperate to define a gate region, through which a person passes from an entrance region into a passage region. The passage barrier has a drive drive unit. The drive has an output unit including a hollow shaft having an outer shell surface. The hollow shaft has a barrier element mount formed for fixing a plate-shaped barrier element on the hollow shaft and is formed substantially in a U-shape. The barrier element is fixed between the limbs of the barrier element mount, wherein at least two adhesive grooves are provided on the inside at the base of the barrier element mount. At least two opposing adhesive grooves are provided for receiving an adhesive on the inside on both limbs of the barrier element mount and opposing grooves are formed on the inside at distal ends of the barrier element mount.

    PANEL DEVICE
    559.
    发明公开
    PANEL DEVICE 审中-公开

    公开(公告)号:US20230332452A1

    公开(公告)日:2023-10-19

    申请号:US18134375

    申请日:2023-04-13

    Abstract: A panel device (10), particularly a roof light for a recreational vehicle, comprises an at least substantially polygonal frame (11, 12) which surrounds an opening (15). A window (20) is connected to the frame for pivoting about a pivot axis and comprises a panel (21) which extends over the opening. Provided between the frame and the window is a stay device (50) which is manipulable between a first position, in which the window is forced into a flat state and closes the opening, and at least one second position in which the window is raised by the stay device and leaves the opening at least partially clear. The stay device comprises a stay (51, 52) which extends movably from an elongate guide (61, 62) at a first outer end and is connected pivotally to the window at an opposite, second outer end. The stay (51, 52) is adjustable in the guide and is coupled to an actuator (78) via a flexible transmission (71 . . . 83). The transmission comprises at least one tension-resistant pull member (71-73) which is coupled to the stay (51, 52) and which is movable in an axially at least substantially rigid yet flexible sleeve (81-83), a first outer end of which is fixed to or close to the stay (51, 52) and a second outer end of which is attached to or close to the actuator (78).

    Sectional lifting door system
    560.
    发明公开

    公开(公告)号:US20230313592A1

    公开(公告)日:2023-10-05

    申请号:US18170610

    申请日:2023-02-17

    Abstract: The present invention relates to a sectional lifting door system. When the system is in normal operation, a door operator drives a cable drum to wind or unwind a cable for lifting or lowering slats. During a process of lowering the slats, if the slats is stopped or slowed unexpectedly (e.g. the slats hit an obstacle below), the door operator is disconnected from a shaft automatically. At this time, even if the door operator is still activated, the shaft does not rotate, the cable drum does not unwind the cable so that a certain tension force can be maintained on the cable and that the cable is prevented from loosening from the drum, thereby preventing the slats from falling off. Also, it can avoid the situation that the weight of the slats is completely applied to the obstacle because the cable drum continuously unwinds the cable.

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