Abstract: A safety gate for a doorframe, which is able to prevent small children from going into a restricted or dangerous area, has a lock that requires two different and independent steps to proceed the unlock process. Furthermore, after the lock is unlocked, the user still needs to lift the plate body before the pivotal movement of the plate body with respect to the first side bar is possible.

Abstract: A mechanism for latching a rotary shaft for, for example, a lift door, provided with a control arm connected to the rotary shaft and pivotally coupled by means of a coupling piece to an operating arm which is rotatable about a fixed shaft, coupling piece and operating arm being brought into line with each other for the latching of a rotary shaft, and a control mechanism being present for operating the latch. The operating arm bears a further shaft, upon which the control mechanism acts, and which can be actuated by a control unit, which can unlatch the mechanism while at the same time tensioning spring means, which on blocking of the rotary shaft are additionally tensioned, which additional tensioning still rotates the rotary shaft further when the blocking is removed, and in which the control unit can release the control mechanism, with the result that the spring means tensioned earlier will rotate the rotary shaft to the latched position.

Abstract: A latching device to be employed on farm tractor hitches or on large swinging gates or the like, wherein camming structure is provided for actuating a latch bolt, and wherein the camming structure is in the form of a downward, angled slot in a cylinder wall, and a camming arm extending out through the slot, whereby initial rotation of the arm will allow the bolt to move downwardly in the cylinder to a latching position extending through aligned apertures in the structures being latched together.

Abstract: A self locking device that is used with a overhead, horizontally pivoted, door in combination with a power operated door opener is disclosed. The device comprises a latch mechanism that is activated by the movement of the door arm and a striker that receives a locking dog. A door arm, which is a part of the door opener, is the member that transfers the movement of the power operated door opener to the door. When the door arm is closing the door, the locking dog is free to interface with a striker. A striker mounted on the header of the door frame receives the locking dog and keeps the door from being forced open which can be done by breaking the door opener mechanism. The latching dog is released by the door opener mechanism with the reverse movement of the door arm and therefore the door is moved to its open position.

Abstract: A closure operator for a pivotally mounted closure, such as a vehicle sun roof or a pivoted window, having a series of pivotally interconnected links including an opener link pivoted to the closure and to an idler link which is pivotally mounted to a base. A driver link is pivotally connected between the opener link and a handle rotatable on the base whereby handle movement is imparted to the driver link for moving the opener link and the closure and with the movement of the opener link being partly guided by the idler link.