Patent application number | Description | Published |
20090107610 | Tyre for vehicle wheel comprising a particular carcass structure - A tyre for a vehicle wheel includes a carcass structure, a belt structure, a tread band, and sidewalls laterally applied to opposite sides of the carcass structure. The carcass structure includes at least one carcass ply with a first and second series of strip segments and a pair of annular reinforcing structures. In one embodiment, each of the pair of annular reinforcing structures includes a first annular insert having opposed axial surfaces and being positioned between respective lateral portions of the first series of strip segments and respective diverging lateral portions of the second series of strip segments. In this embodiment, no filling body is positioned between the respective lateral portions of the first series of strip segments and the respective diverging lateral portions of the second series of strip segments. In an alternative embodiment, each of the pair of annular reinforcing structures includes a first annular insert and a filling body, the first annular insert and the filling body each having opposed axial surfaces and being positioned between the respective lateral portions of the first series of strip segments and the respective diverging lateral portions of the second series of strip segments. | 04-30-2009 |
20090309265 | METHOD AND APPARATUS FOR MOULDING AND CURING TYRES FOR VEHICLE WHEELS - A method of moulding and curing tyres for vehicle wheels includes the steps of disposing a tyre being processed on a toroidal support, enclosing the tyre and the toroidal support inside a moulding cavity defined in a vulcanization mould, pressing the outer surface of the tyre against the moulding cavity walls, and administering heat to the tyre to cause molecular crosslinking of the tyre. The pressing step includes the steps of compressing side portions of the tyre between the moulding cavity walls and the outer surface of the toroidal support, concurrently with the closing step, and imposing an expansion to a radially-outer portion of the tyre to bring the radially-outer portion of the tyre against the walls of the moulding cavity. | 12-17-2009 |
Patent application number | Description | Published |
20090009310 | Wheel Having a Controlled Pressure and a Pressure Reservoir - A wheel having a controlled pressure includes a rim associated with a tank adapted to be filled with a fluid to a first pressure; a tyre mounted on the rim and having an inner volume inflated to an operating pressure at a reference temperature, the operating pressure being lower than the first pressure; and at least one valve assembly adapted to establish a communication between the tank, the inner volume of the tyre and the external environment. The valve assembly includes a command valve, an exhaust valve and a compensation valve operatively associated with each other. The command valve controls communication between the tank and the inner volume of the tyre. The exhaust valve is connected to the external environment, to the inner volume, to the command valve and to the compensation valve. The compensation valve is connected to the exhaust valve and the command valve. The command valve includes an inner chamber connected with the exhaust valve and the compensation valve in such a manner that the command valve is operated by the exhaust valve and the compensation valve through a pressure variation of the inner chamber in response to a variation of the inner pressure of the tyre. | 01-08-2009 |
20090125251 | METHOD FOR DETERMINING A FORCE AT THE HUB OF A WHEEL OF A VEHICLE WHILE TRAVELING AND WHEEL SUITABLE FOR ALLOWING SAID METHOD TO BE CARRIED OUT - A method for determining the force at the hub of a wheel of a vehicle while traveling. The wheel includes a rim and at least one deformation sensor directly associated with the rim in at least one predetermined position and arranged according to at least one predetermined orientation. The method includes the steps of detecting at least one deformation component of the rim during travel through the at least one deformation sensor; applying to the at least one deformation component, during travel, a correlation parameter characteristic of the rim, between the force at the hub and the relative deformation of the rim to determine at least one force component at the hub correlated with the at least one deformation component of the rim. The determining of the correlation parameter preferably takes place through experimental tests that include the steps of providing a sample wheel having a rim substantially the same as that of the wheel and determining at least one correlation coefficient between at least one force component acting upon the sample wheel at the hub along at least one predetermined direction and at least one respective deformation component of the rim of the wheel. | 05-14-2009 |
20090165691 | Method for Controlling the Deformation of a Surface of a Sail of a Sailing Boat During a Direction Change Manoeuvre - A method for controlling the deformation of a surface of a sail of a sailing boat during a direction change manoeuvre, includes arranging at least one inflatable batten into a respective seat formed on a side surface of the sail, the at least one batten being inflated at a predetermined working pressure as to impart to said at least one inflatable batten a bending stiffness having, with no bending load, a predetermined value, carrying out a manoeuvre, for changing the direction of the sailing boat, wherein in a first part of manoeuvre the at least one batten is subjected to the action of an increasing bending load, and in a second part of the manoeuvre, the bending load ends its action on the at least one batten, during the manoeuvre the mechanical properties of the at least one batten being changed so that as the bending load increases in the first part of the manoeuvre, the value of the bending stiffness of the at least one batten decreases considerably, and as the action of the bending load ends in the second part of the manoeuvre, the bending stiffness of the at least one batten returns to the predetermined value. | 07-02-2009 |
20090211684 | Pressure Monitoring and Adjustment for Two Wheeled Vehcile with Wheel Based Pressure Reservoir - A method of allowing control of a vehicle with at least two-wheels in case of puncture of a tyre, each wheel including a rim and a tyre associated therewith, includes the steps of: inflating each tyre to an operating pressure; admitting a fluid compressed to a first pressure higher than the operating pressure of the tyre into at least one tank associated with at least one of the rims; bringing the tyre into communication with the tank when the inner pressure of the tyre is lower than a predetermined first threshold value; detecting a variation of an inner pressure of the tank; activating a pressure measuring device when the inner pressure variation corresponds to a reduction and is higher than a first predetermined value; measuring the inner pressure of the tank with a predetermined frequency by means of (through) the pressure measuring device; calculating a variation in the inner pressure in a time unit; generating an alarm signal when the calculated inner pressure variation corresponds to a reduction and is higher than a second predetermined value; and transmitting the alarm signal to the driver. | 08-27-2009 |
20090273460 | Pneumatic tyre for vehicle wheels provided with an antenna and method of manufacturing thereof - A pneumatic tyre for vehicle wheels with a radially inner surface of a substantially toroidal conformation, includes at least one antenna provided with an electrically conductive elongated body in engagement with the radially inner surface through a plurality of constraint elements. Each pair of consecutive constraint elements identifies an orthodromic distance smaller than the length of the elongated-body portion between this pair of elements. Also described is a method of setting the antenna on the inner surface of the tyre. | 11-05-2009 |
20110114003 | METHOD FOR CONTROLLING THE DEFORMATION OF A SURFACE OF A SAIL OF A SAILING BOAT DURING A DIRECTION CHANGE MANOEUVRE - There is described a method for controlling the deformation of a surface of a sail ( | 05-19-2011 |