Abstract: The application relates to a venting cap for oil tanks of machines and machinery, including: a cup fitted with a flange along its outer surface, with this flange bearing coupling elements underneath it with complementary elements provided on the access sleeve of the tanks and at the top of shaped engagement tabs, a lid for closing the cup that is snap-fitted onto the cup, fitted with a flange, wherein: the flanged partition houses on its lower surface an insert with a substantially cylindrical profile, the cup body is associated with a spiral labyrinth on top of which is fitted the means for engaging the cup; and above the flange of the cup there is a collar fitted with an external toroidal groove that engages with a raised toroidal thread along the inner surface of an upper closing lid of the cup.

Abstract: Locking device for the opening of a door including two opposite members apt to be mounted to a door and to a post, respectively, and provided with housing holes of screws for the engagement with a surface, one of the bodies including a solid body except for a cavity provided on one of the side walls, the other one of the bodies including an outside shell internally provided with a housing cavity of a sliding body, characterised in that a lock block for the movement of the sliding body is furthermore provided, housed within a cavity provided on the top surface of the outer shell as well as dampening and thrust structure of the sliding body.

Abstract: Manoeuvering flywheel of the type consisting of a main flywheel body composed of a cylindrical base and a crown consisting of a regular series of gripping lobes characterised in that the cylindrical base centrally provides a cylindrical cavity, wherein a septum is located which is centrally perforated, perpendicular to the directrices of the cylindrical cavity, and apt to make up two separate chambers, on the lower surface of which a series of engagement teeth is housed.

Abstract: Maneuver element of the type composed by an element provided, on each end, with a protruding grip and centrally with safety means which can be activated under pressure and controlled from outside, apt to engage the structure on which it is mounted and to prevent the rotation, said pressure activated means, being composed of a button system having a central hole, housed within a depression of said maneuver element, and partially protruding from it, from the base of said button system abutting engaging and retaining plugs, housed free to move longitudinally within the holes obtained in said maneuver element, characterized in that fast remote identification means of the functionality of said maneuver and pressure fast activation means of said engaging and retaining plugs are associated with said button system, said pressure fast activation means of said plugs being composed by the association of engaging elements mounted on a rotor with driving and retaining elements provided on a stator complementary to said ro

Abstract: Hinge for the support and the maneuvering of doors, made up of two wing elements and provided with means for attachment to a frame part and respectively to a door portion, as well as mutually reinforcing means in a pivoting zone, the means being constituted by appendices internally hollow in the form of a cylindrical body projecting from the wing elements, characterized in that at least one of the appendices of the wings provides on the inner surface axial grooves suitable for housing a push-engagement element housed inside a pivot pin of the wing elements and protruding from it.

Abstract: A maneuvering element consisting of a crank provided at one end with a protruding handle and at the other end with a hollow bush which actuates a rotation transmission shaft and furthermore providedwith a safety system, consisting of a button housed within a cavity obtained in the crank for the actuation of a locking pin, and with the buton there is associated a retaining feature of the locking pin axially controlled by the button and apt to rotate between a fastening position and an unlocking position.

Abstract: Handle consisting of a gripping knob internally provided with a housing cavity in a stable position of a pin, the pin consisting of at least a portion with a larger-diameter section and of a portion with a smaller diameter projecting therefrom. At the top end of the smaller-diameter portion, a retaining member is provided, having a larger diameter with respect to that of the smaller-diameter portion. An elastic bush is housed on the smaller-diameter portion for engagement with the inner surface of the knob. Between the retaining member and the elastic bush, a washer is arranged of a material aimed at minimizing friction.