Abstract: Device that prevents the flooding of residential and office spaces during a rise in the water level, and protects these spaces from the penetration of flame, dust, smoke, and noise. The most important feature of the proposed device is a movable insert that is installed at the bottom of a standard door. The biggest advantage of the proposed insert is that the adjustment of the pressure of the sealing may be performed from inside of the protected premises. The Drive mechanism of the sealing element is comprised of two elements with beveled surfaces moving in different directions. The first element (rail 1) is moving horizontally, and the second member (element 2) is moving vertically. These two elements have grooves that house a dowel(s) which shifts the direction of the movement of element 2 when the movement of rail 1 changes.

Abstract: The proposed invention refers to devices for opening and closing of cylinder-type locks, and is comprised of: i. Lock according to patent application Ser. No. IL2011/211,924 with additional gearwheel. ii. Cylinder Thumb-Turn that opens/closes the lock both from inside and outside. iii. External flange wherein Cylinder Thumb-Turn can rotate freely while opening/closing the lock. iv. Lock according to patent application Ser. No. IL2011/211,924 that cannot be opened when gearwheels A and B are disconnected. v. Remote control lever according to patent application Ser. No. IL2011/211,924 with additional gearwheel that opens/closes the lock manually (or electronically by using electromagnet) once the remote control lever receives command to join gearwheels A and B. vi. Flanges covering Cylinder Thumb-Turn, with watertight seal pads.

Abstract: The present invention relates to locking systems in general and in particular to locking systems that can be locked so that they cannot be opened even with a genuine key. The present invention further relates to a method for locking a locking system comprising a lock cylinder connected to a bolt such that it cannot be opened with any key, including with the original, genuine key, the method comprising the steps of: (i) adding a control lever to any cogwheel or cam connecting the lock cylinder to the bolt; (ii) moving the control lever such that the cogwheels or cams connecting the lock cylinder to the bolt are misaligned; wherein the lock cylinder is no longer connected to the bolt and moving the genuine key inside the lock cylinder does not move the bolt.

Abstract: The present invention, in some embodiments thereof, provides a safety lock for enabling partial opening of a door. The safety lock includes: (i) a first lock member configured for being installed at an opening of a doorframe of the door, wherein the first lock member includes a movable element and at least one track for allowing the movable element to slide there through, wherein the movable element comprises an opening. (ii) a second lock member comprising a protruding section, wherein the protruding section is configured for being inserted into the opening of the first lock member, installed at the doorframe, for allowing thereby pulling of the movable element for allowing partial opening of the door and removing the protruding section from the opening for opening the door.