Abstract: Disclosed is a reversibly installable modular fitness area including a plurality of modules, variously assemblage due to common stable and reversible connection system, which when joined together give rise to stage-like structures, each of which including one or more equipment pieces for carrying out fitness exercises. Especially opposite support modules have slingshot arm shape, and each of the stages is equipped with a display illustrating how to perform the exercise.

Abstract: Disclosed is a reversibly installable modular fitness area including a plurality of platform-like islands adapted to support a plurality of systems and equipment in order to allow the user to carry out fitness exercises, the modular fitness area including at least one first central island; at least one second island; at least one third island; at least one fourth island; at least one fifth island; at least one sixth island; at least one seventh island; at least one eighth island; at least one ninth island; the modular fitness area also including an energy supply system adapted to supply power to the electronic components included therein.

Abstract: The present invention relates to a method for controlling a self-propelled robot device, such as a robot device for mowing grass, and a control system that carries out the aforementioned method. According to the invention, the self-propelled robot device is driven by an inertial navigation system for a set time period or distance and the device is periodically stopped for rectifying the position and advancing course thereof by a satellite detection system: the periodic correction of the inertial navigation system using satellite detections thus prevents course errors from accumulating. The correction based on the satellite detection system can be possibly optimized through a further selection of the obtained values according to a statistical basis. Preferably, the control method according to the invention also provides a procedure for detecting, recording and mapping the operating region wherein the device is operated.

Abstract: A cutting head for a nylon-cord mower and the like, comprising a case housing an inner spool on which it is wound at least a length of nylon cord, elastically loaded by a helical spring, with the two ends of said nylon cord protruding through pairs of annular members mounted on said case in diametrally opposed locations. The inner spool is formed by a cylindrical body with at least two holes aligned along an axis intersecting the axis of the spool, and that can be axially aligned with the two annular members for allowing the replacement of the nylon cord without opening the cutting head.