A vent for mobile living quarters has a base and a cover coupled to the base. The cover is connected to the base and pivots about a hinge by a mechanism that is coupled to a moving bar. The moving bar is attached to the cover by fasteners on one end and an alignment tab on the opposite end. The cover is user-replaceable from the top side without having to move or disconnect the mechanism. To replace the cover, fasteners are removed and the cover is pivoted away from the moving bar, where the alignment tab disengages from the cover. The cover is then slidable along the hinge to completely remove the cover from the base. A new replacement cover is slid along the hinge and the alignment tab is engaged with the replacement cover. The cover is pivoted down to a closed position and the fasteners are reinstalled.

A vent for mobile living quarters has a base and a cover coupled to the base. The cover is connected to the base and pivots about a hinge by a mechanism that is coupled to a moving bar. The moving bar is attached to the cover by fasteners on one end and an alignment tab on the opposite end. The cover is user-replaceable from the top side without having to move or disconnect the mechanism. To replace the cover, fasteners are removed and the cover is pivoted away from the moving bar, where the alignment tab disengages from the cover. The cover is then slidable along the hinge to completely remove the cover from the base. A new replacement cover is slid along the hinge and the alignment tab is engaged with the replacement cover. The cover is pivoted down to a closed position and the fasteners are reinstalled.

An integrated casement window operator and lock, including a gear mechanism and an arm assembly, the arm defining a rack portion and an adjacent arcuate gear portion, the arm mounted to the housing with a pinion gear engaged with the rack portion and the arcuate gear portion, the pinion gear defining a star-shaped aperture therethrough and a handle with a square-shaped shaft portion received in the star-shaped aperture of the gear. The handle is selectively rotatable to shift the arm between a window fully closed position and a window fully open position, wherein an anti-backdrive mechanism is provided to inhibit backdriving of the arm in both the window fully closed window fully open positions.

An integrated casement window operator and lock mechanism including an arm shiftable with a lever handle between a first position of the lever handle wherein the window is closed and the sash is locked to the frame with a hook defined in an arm of the operator and lock mechanism, a second position wherein the hook is disengaged so as to unlock the sash from the frame, and a third position wherein the arm is pivoted outward to move the sash out of the frame, thereby opening the window.

An integrated casement window operator and lock, including a gear mechanism and an arm assembly, the arm defining a rack portion and an adjacent arcuate gear portion, the arm mounted to the housing with a pinion gear engaged with the rack portion and the arcuate gear portion, the pinion gear defining a star-shaped aperture therethrough and a handle with a square-shaped shaft portion received in the star-shaped aperture of the gear. The handle is selectively rotatable to shift the arm between a window fully closed position and a window fully open position, wherein an anti-backdrive mechanism is provided to inhibit backdriving of the arm in both the window fully closed window fully open positions.

A device for opening and closing an outwardly opening pivoting wing includes an actuating device including a base and a toothed member rotatable with respect to the support and driven into rotation by a control device, and an arm having a toothed portion including a circular toothed portion and a straight toothed portion, wherein the toothed member cooperates with the circular toothed section to swing the arm between a closed wing angular position and an open wing angular position, and vice versa, and wherein, in the closed wing angular position, the toothed member cooperates with the straight toothed portion of the arm for moving the arm along a straight direction between a locked wing position and an unlocked wing position, and vice versa, wherein the support and the arm cooperate with each other by means of a guide system comprising a first, a second and a third pin-slot coupling.

A wireless transmission system used for a self-locking lock box has a first transmission unit received in a first insert hole of a door frame, and a self-locking lock box secured at a door plank. The self-locking lock box is provided therein with a square bolt able to eject out of the lock box, and the square bolt is connected with a control pin and has its front end fixed with a second transmission unit. By so designing, when a user closes the door plank, the control pin will be pressed by the door frame and release the square bolt to make the square bolt eject out of the self-locking lock box and get into the first insert hole of the door frame, thus enabling the first transmission unit to approach the second transmission unit for elevating transmission efficiency.

An inductive receiving device is provided, including a main body and an actuating unit which has at least one contact portion, a processing unit and a driving unit. The main body has a shell body which has a through opening normally blocked by a blocking portion of a doorstop assembly, and when the doorstop assembly is in an opening position. The processing unit is in communication with the at least one contact portion and the driving unit, the driving unit is connected to the doorstop assembly, the contact portion transfers a pressure variation into an opening signal and transmitting the opening signal to the processing unit, as receiving the opening signal, the processing unit transmits an actuating signal to the driving unit, and the driving unit drives the doorstop assembly to swing to the opening position.

A device for opening and closing an outwardly opening pivoting wing, comprising: an actuating device including a support, a crank rotatable relative to the support and a control mechanism operated by the crank, and an arm having a toothed portion which cooperates with said control mechanism, wherein the control mechanism cooperates with the toothed portion of the arm for the translational motion of the arm along a rectilinear direction between a locked wing position and an unlocked wing position, and vice versa, a first and a second slider intended to engage a groove of the wing in a movable manner in a rectilinear direction, wherein the first slider is articulated at a distal end of the arm and wherein the second slider is connected to a locking device.

An integrated casement window operator and lock mechanism including an arm shiftable with a lever handle between a first position of the lever handle wherein the window is closed and the sash is locked to the frame with a hook defined in an arm of the operator and lock mechanism, a second position wherein the hook is disengaged so as to unlock the sash from the frame, and a third position wherein the arm is pivoted outward to move the sash out of the frame, thereby opening the window.