Abstract: A parallel fixation means for fixing two swivel wheels of a non-motorized vehicle in parallel to one direction that includes a rigid strip with connecting means for connecting the parallel fixation means to a body of the non-motorized vehicle and two locking means to be mounted on the two swivel wheels and to fix them in parallel to the one direction for preventing a rotation of the swivel wheels. The two locking means are connected to the rigid strip by means of pivot connections to be in a fixed direction or in a loose and free to rotate position. When the pivot connections are in the fixed direction the two swivel wheels are fixed in the one direction, and when the pivot connections are in the loose and free to rotate position the two swivel wheels are free to function as swivel wheels.

Abstract: A desktop shield system for splashes protection that has a right rod, a left rod and a panel shield. The lower end of the right rod is connected to a base that its first side has a protrusion that corresponds with a recess at its second side. The right rod also includes magnet elements that are connected to its right side at a zero height. The left rod is designed in the same way as the right one but in reverse as a mirror view. The system can be connected with a another identical system, in a way that the recess of the left rod of the another system is assembled with the protrusion of the right rod of the system and the magnet elements of the left rod of the another system magnetically connected with the magnet elements of the right rod of the system.

Abstract: A quick lock-release mechanism for assembling a table plate to table legs that includes a lower ring, a cap, two locking wings and a two springs. The lower ring includes a central hole and two opening pins. The cap includes a circumferential rim and two pins. The locking wings include an axial hole, a hole for receiving a tension screw and a sloping side. The springs and the locking wings are designed to be assembled onto the spring wings pins. The tension screws are designed to be screwed into the holes for receiving the tension screw. The springs push the locking wings toward the center of the mechanism so that the locking wings cover a part of the central hole and when rotating the cap relatively to the lower ring the spring wings pins exert force on the locking wings and push back the locking wings.