Abstract: A hydrovac is provided having, an engine, a transmission comprising a power take-off connected to a hydraulic pump, a debris tank, a vacuum hose connected to the debris tank, a boom carrying the vacuum hose, a blower operative to create a vacuum in the debris tank, a hydraulic motor connected to the blower to drive the blower, the hydraulic motor connected to the at least one hydraulic pump, an emergency shutoff valve connected in fluid communication with the debris tank, a boom isolation assembly which in a closed position fluidly isolates the debris tank from the vacuum hose, and a controller. A controller operative to, in response to the controller losing communication with a remote control, open the emergency shutoff valve, close the boom isolation assembly, disengage the power take-off, and after the power take-off is disengaged, slowing a speed of the engine to an idle speed.

Abstract: A hydrovac and method for measuring the current weight of the hydrovac in real-time is provide. The current weight of the hydrovac can be determined by determine a weight of water in the at least one water tank using a pressure sensor, determining a weight of debris in a debris tank using at least one load cell, and using the determined weight of the water in the at least one water tank, the determined weight of the debris in the debris tank, and a predetermined empty weight of the hydrovac to determine a current weight of the hydrovac.

Abstract: A method of shutting down operations of a hydrovac when a weight limit is reached is provided. A current weight of the hydrovac is determined and this current weight of the hydrovac is compared to a weight limit. When the current weight of the hydrovac reaches the weight limit, an emergency shutoff valve is opened to vent a debris tank to atmosphere, a boom isolation assembly is closed to isolate a vacuum hose from the debris tank, and a power take-off is disengaged to stop a blower creating a vacuum in the debris tank.

Abstract: A hydrovac is provided having an engine mounted on the frame, a transmission connected to the engine with a power take-off, a hydraulic fluid pump connected to the power take-off, steering wheels operative to steer the hydrovac, ground wheels operative to be driven by the engine through the transmission, a debris tank, a vacuum hose fluidly connected to the debris tank, a boom pivotally carrying the vacuum hose, a blower operatively connected to the debris tank to create a vacuum in the debris tank, and a hydraulic motor connected to the blower, the hydraulic motor connected to the hydraulic pump. A controller can be provided, operative to vary a speed of the engine between a first RPM and a second RPM, whereby operating the engine at the first RPM drives the hydraulic pump faster than operating the engine at the second RPM.

Abstract: A hydrovac and a method of conducting an emergency is provided. The hydrovac has an engine, a transmission, steering wheels, ground wheels, a debris tank, a vacuum hose connected to the debris tank, a boom carrying the vacuum hose, a blower operative to create a vacuum in the debris tank, a hydraulic fluid pump, an emergency shutoff valve connected in fluid communication with the debris tank, at least a solenoid valve connected between the hydraulic fluid pump and the emergency shutoff valve, a relay connected between a voltage source and the hydraulic solenoid valve, and an emergency stop buttons operative to interrupt voltage when the emergency stop buttons is pressed. Pressing the at least one emergency stop button interrupts voltage to the at least one hydraulic solenoid valve, stopping supply of hydraulic fluid to the emergency shutoff valve, opening the emergency shutoff valve and venting the debris tank.

Abstract: The invention relates to a method of manufacturing a molding element for a tire mold. The molding element comprises a sintered part and a non-sintered part attached to the sintered part. The sintered part comprises a shell and a core internal to the shell and formed as one piece with the said shell. The core comprises a meshed structure comprising a plurality of cavities. The method of manufacture comprises a step of manufacturing the sintered part of the molding element from a metallic powder deposited on a flat surface of a support plate and fused layer by layer, the sintered part being attached to the support plate by fused metallic powder. The method also comprises a step of machining the support plate to form the non-sintered part of the molding element.

Abstract: Sintering device comprising a laser source, the light power of which is capable of selectively melting successive layers of metal powders, and a reference plate on which the first metal powder layer is deposited and which serves as a base for the construction of an object, characterized in that the said plate comprises one or more recesses, the shape of which is determined so as to make the said recesses capable of receiving inserts of a given shape.

Abstract: The invention relates to a method of manufacturing a molding element for a tire mold. The molding element comprises a sintered part and a non-sintered part attached to the sintered part. The sintered part comprises a shell and a core internal to the shell and formed as one piece with the said shell. The core comprises a meshed structure comprising a plurality of cavities. The method of manufacture comprises a step of manufacturing the sintered part of the molding element from a metallic powder deposited on a flat surface of a support plate and fused layer by layer, the sintered part being attached to the support plate by fused metallic powder. The method also comprises a step of machining the support plate to form the non-sintered part of the molding element.

Abstract: Sintering device comprising a laser source, the light power of which is capable of selectively melting successive layers of metal powders, and a reference plate on which the first metal powder layer is deposited and which serves as a base for the construction of an object, characterized in that the said plate comprises one or more recesses, the shape of which is determined so as to make the said recesses capable of receiving inserts of a given shape.

Abstract: The invention relates to a lining assembly (14), characterized in that it comprises: a skin (18) having first (20) and second (22) opposed surfaces, the first surface (20) being intended to be in contact with a support block (12) of a tire mould, and a plurality of lining elements (24) projecting from the second surface (22) of the skin (18), the lining elements being intended to form tread patterns on a portion of a radially external surface of a tire.

Abstract: This dough shaping machine includes, carried by a frame (12), a station (20) for rolling out dough, a station for rolling up the rolled out dough, a station for shaping the rolled up dough by stretching it and at least one conveyor (14, 16) for transferring the dough from the rolling out station (20) to the rolling up station (24) and the shaping station. Each conveyor (14, 16) constitutes a unitary assembly structurally separate from the frame (12) and is mounted on the latter through removable fixing members (130, 132).

Abstract: This dough shaping machine includes a station (20) for rolling out dough and a station (14, 16) for conveying the rolled out dough along an outward path from the entry of the conveyor station (14, 16) facing the rolling out station (20) to an intermediate point through a station for rolling up the rolled out dough and a return path through a station (44) for shaping the rolled up dough by elongating it from the intermediate point to the exit from the transfer point near the entry. It further includes, near the intermediate point, a station (46) for actively transferring the rolled up dough from the outward path to the return path.