Abstract: Tire for a civil engineering vehicle comprising a tread of high initial thickness E, this thickness corresponding to the thickness of material which can be worn during use, this tread comprising a smooth rolling surface, i.e. without any recesses, intended to come into contact with the ground during rolling, this tread being limited axially by lateral faces, these lateral faces being extended radially on the tire by sidewalls, this tread being provided with a wear indicator device to visually indicate a wear level of the said tread, this tire being such that the wear indicator device comprises, in combination, a plurality of grooves formed on at least one of the lateral faces of the tread and, for each groove, a visual index indicating a wear level corresponding to the percentage of the initial thickness E remaining to be worn.

Abstract: A pipe system for a fluid, in particular a gas of an intake system (10) or a turbocharger of an internal combustion engine is disclosed. Also disclosed is a method and an apparatus for connecting at least one duct part (12) of a pipe system (10). The pipe system (10) has at least one blow-molded duct part (12) made of plastic and at least one fitting (18) for connecting the at least one blow-molded duct part (12) with another part (20) of the pipe system (10). The fitting (18) is inserted tight in the at least one blow-molded duct part (12). The at least one blow-molded duct part (12) is shrinked onto the at least one fitting (18).

Abstract: Tire for a civil engineering vehicle comprising a tread of high initial thickness E, this thickness corresponding to the thickness of material which can be worn during use, this tread comprising a smooth rolling surface, i.e. without any recesses, intended to come into contact with the ground during rolling, this tread being limited axially by lateral faces, these lateral faces being extended radially on the tire by sidewalls, this tread being provided with a wear indicator device to visually indicate a wear level of the said tread, this tire being such that the wear indicator device comprises, in combination, a plurality of grooves formed on at least one of the lateral faces of the tread and, for each groove, a visual index indicating a wear level corresponding to the percentage of the initial thickness E remaining to be worn.

Abstract: A pipe system for a fluid, in particular a gas of an intake system (10) or a turbocharger of an internal combustion engine is disclosed. Also disclosed is a method and an apparatus for connecting at least one duct part (12) of a pipe system (10). The pipe system (10) has at least one blow-molded duct part (12) made of plastic and at least one fitting (18) for connecting the at least one blow-molded duct part (12) with another part (20) of the pipe system (10). The fitting (18) is inserted tight in the at least one blow-molded duct part (12). The at least one blow-molded duct part (12) is shrinked onto the at least one fitting (18).

Abstract: A closure head for a fuel tank filler pipe allowing automatic opening of a shutter under action of thrust of a nozzle on a device integrated into the top of the filler pipe and closing of the shutter when the nozzle is withdrawn. The locking of the shutter is achieved by a mechanism connected to a bodywork flap such that locking and squashing of a seal are achieved upon the closing of the bodywork flap and the opening of the bodywork flap cannot unlock the shutter without the nozzle additionally being introduced into the system. A method for opening a filler head employs the device.

Abstract: A closure head for a fuel tank filler pipe allowing automatic opening of a shutter under action of thrust of a nozzle on a device integrated into the top of the filler pipe and closing of the shutter when the nozzle is withdrawn. The locking of the shutter is achieved by a mechanism connected to a bodywork flap such that locking and squashing of a seal are achieved upon the closing of the bodywork flap and the opening of the bodywork flap cannot unlock the shutter without the nozzle additionally being introduced into the system. A method for opening a filler head employs the device.

Abstract: The present invention provides an accessory for a flap for use with an inner tube and wheel, comprising a base of oblong shape whose upper face is provided with a rigid insert in the form of a hollow cylinder, said accessory being made by molding a single material that resists creep up to a temperature of 180° C., to prevent the flap creeping through an orifice in the wheel.

Abstract: The present invention provides an accessory for a flap for use with an inner tube and wheel, comprising a base of oblong shape whose upper face is provided with a rigid insert in the form of a hollow cylinder, said accessory being made by molding a single material that resists creep up to a temperature of 180° C., to prevent the flap creeping through an orifice in the wheel.

Abstract: An annular element (3) placed between the two beads (12) of a tire (P) moed on a flat-base rim (J). In order to be able to use the tire on said rim without an inner tube, the annular element, in order to assure the tightness of the assembly, has in meridian section a contour and, in particular, two lateral sides (30) such that the clamping s between the ring and the beads, which is zero or even negative at the base of the ring, increases then slightly over a certain radial distance h.sub.1 and then more greatly over a distance h.sub.2 radially adjacent the first distance.

Abstract: In order to be able easily to inflate a tire mounted on a rim with a seal ring (6) arranged between the two beads, without presenting the ordinary inconveniences in mounting, the inflation device is formed of a valve (V, V') provided with a locking element (2, 2') intended to be associated with a locking member (83, 51) separate from the valve. The method of inflation consists then in introducing the valve (V, V') provided with its stem (1, 1') and its locking element (2, 2') into the orifice (64) provided in the ring 6 and into the locking member (83, 51), and then turning the valve.