Abstract: A lock system is made in a combination of a rotatable latch and a release lever for restricting the turn of the latch in a disengaging direction. The lock system further includes a release lever disengagement maintaining mechanism which engages with the release lever to maintain it in its disengaging condition wherein the latch is disengaged from the release lever. The release lever disengagement maintaining mechanism is designed to release the release lever from its disengaging condition when the latch turns through a specified rotation angle. Lock mechanisms are provided for a lift open type window which can be housed by moving a movable window frame upward from a window closing upright position, being guided by a pair of guide rails. The lock mechanisms are respectively attached to both ends of a top part of the window frame, so as to be exterior to the window frame and interior to and under the guide rails.

Abstract: The invention provides a supporting mechanism of a slide door in which a lower end rail portion being most easily dirty in a slide door opening and closing portion is hardly get dirty and an operation can be smoothly and without being shaky performed even when a great load is locally applied to the slide door at a time of moving the slide door. The supporting mechanism of the slide door has upper and lower rails extending along edge portions of upper and lower ends of the entrance/exit and guide rollers respectively provided at least in upper and lower end portions of a front edge of the slide door. The lower rail is constituted by one narrow plate rail having a lower end edge being a free end, the lower guide rollers include a set of two or more rolling rollers, and the set of two or more rolling rollers hold and support the lower rail therebetween from below so as to freely roll.

Abstract: A lock system is made in a combination of a rotatable latch and a release lever for restricting the turn of the latch in a disengaging direction. The lock system further includes a release lever disengagement maintaining mechanism which engages with the release lever to maintain it in its disengaging condition wherein the latch is disengaged from the release lever. The release lever disengagement maintaining mechanism is designed to release the release lever from its disengaging condition when the latch turns through a specified rotation angle. Lock mechanisms are provided for a lift open type window which can be housed by moving a movable window frame upward from a window closing upright position, being guided by a pair of guide rails. The lock mechanisms are respectively attached to both ends of a top part of the window frame, so as to be exterior to the window frame and interior to and under the guide rails.

Abstract: A lock system is made in a combination of a rotatable latch and a release lever for restricting the turn of the latch in a disengaging direction. The lock system further includes a release lever disengagement maintaining mechanism which engages with the release lever to maintain it in its disengaging condition wherein the latch is disengaged from the release lever. The release lever disengagement maintaining mechanism is designed to release the release lever from its disengaging condition when the latch turns through a specified rotation angle. Lock mechanisms are provided for a lift open type window which can be housed by moving a movable window frame upward from a window closing upright position, being guided by a pair of guide rails. The lock mechanisms are respectively attached to both ends of a top part of the window frame, so as to be exterior to the window frame and interior to and under the guide rails.