Abstract: An anti-fall device includes an outer casing which has a receiving chamber, at least a window formed at a sidewall of the outer casing to communicate with the receiving chamber, and a braking member adjacent to the window, and a braking assembly which includes at least a centrifugal actuator supported within the receiving chamber to be moved to selectively engage with the braking member between a locked position and an unlocked position. The centrifugal actuator is aligned with the window, such that the centrifugal actuator of the braking assembly is visibly seen through the window to check whether the centrifugal actuator is actuated at the locked position or the unlocked position.

Abstract: A triple locking hook connector includes a hook, a locking bar, a first spring, a controlling shaft, and a second spring. The hook has an axle hole and a first groove on an end of a hook opening, and has a spacing portion on the other end of the hook opening. An edge of an end of the locking bar has a first bolt. The first spring is to drive a first bolt to keep at the first position and to drive the other end of the locking bar to remain in the spacing portion. The controlling shaft joins the axle hole via a main axle to restrict the first bolt in the first position and to be driven by a second spring to stay at the third position to ensure the locking bar shutting the hook opening.

Abstract: A triple locking hook connector includes a hook, a locking bar, a first spring, a controlling shaft, and a second spring. The hook has an axle hole and a first groove on an end of a hook opening, and has a spacing portion on the other end of the hook opening. An edge of an end of the locking bar has a first bolt. The first spring is to drive a first bolt to keep at the first position and to drive the other end of the locking bar to remain in the spacing portion. The controlling shaft joins the axle hole via a main axle to restrict the first bolt in the first position and to be driven by a second spring to stay at the third position to ensure the locking bar shutting the hook opening.

Abstract: A method of making a monitor frame includes producing separately a transparent plate made of plastic, a middle sheet, and a looped framing plate made of plastic and defining a frame opening, the middle sheet having a middle opening extending through opposite first and second surfaces thereof; attaching the second surface of the middle sheet to a press face of a tool through a vacuum suction force; moving the press face of the tool to abut against the transparent plate and press the middle sheet against the transparent plate such that the first surface of the middle sheet is adhered flatly to the transparent plate; moving the tool away from the second surface of the middle sheet; and adhering the looped framing plate to the second surface of the middle sheet such that the frame opening is aligned with the middle opening.