Patent application number | Description | Published |
20090318252 | PULLEY ASSEMBLY - A pulley assembly for flexible motor vehicle transmission, comprising a supporting member rotatable about an axis, a pulley adapted to cooperate with a belt and connected to the supporting member to be rotatable about said axis with respect to the supporting member, a spiral spring interposed between the supporting element and the pulley and comprising a sliding portion elastically loaded in radial direction against a sliding wall carried by one of either the supporting members or the pulley for coupling by a tangential force transmission the hub to the supporting member. In particular, the sliding portion defines a first contact zone and a second contact zone in which is concentrated the contact pressure exchanged between the sliding portion and the sliding wall, the first and second contact zone being reciprocally and angularly distanced. | 12-24-2009 |
20100099527 | DAMPER PULLEY ASSEMBLY HAVING A SAFETY DEVICE - A damper pulley assembly has a hub; a seismic mass connected to the hub to define a dynamic torsional vibration damper; a pulley connected to the hub; elastic means for connecting the pulley in torque-transmitting mode to the hub; and one-way stop means for arresting the pulley in a first stop position with respect to the hub or the seismic mass in a first direction, when the elastic means reach a predetermined torsional load. | 04-22-2010 |
20100234156 | PULLEY ASSEMBLY FOR A START-STOP BELT DRIVE - Described herein is a pulley assembly for a start-stop belt drive, comprising a hub having an axis and designed to be connected to a crankshaft of an internal-combustion engine, a pulley, which is designed to co-operate with a belt of a belt drive and is connected in a rotatable way on the hub, and a seismic mass, which is connected to the hub so as to rotate with respect to the hub so as to define a damping device for damping torsional vibrations. | 09-16-2010 |
Patent application number | Description | Published |
20090318252 | PULLEY ASSEMBLY - A pulley assembly for flexible motor vehicle transmission, comprising a supporting member rotatable about an axis, a pulley adapted to cooperate with a belt and connected to the supporting member to be rotatable about said axis with respect to the supporting member, a spiral spring interposed between the supporting element and the pulley and comprising a sliding portion elastically loaded in radial direction against a sliding wall carried by one of either the supporting members or the pulley for coupling by a tangential force transmission the hub to the supporting member. In particular, the sliding portion defines a first contact zone and a second contact zone in which is concentrated the contact pressure exchanged between the sliding portion and the sliding wall, the first and second contact zone being reciprocally and angularly distanced. | 12-24-2009 |
20100099527 | DAMPER PULLEY ASSEMBLY HAVING A SAFETY DEVICE - A damper pulley assembly has a hub; a seismic mass connected to the hub to define a dynamic torsional vibration damper; a pulley connected to the hub; elastic means for connecting the pulley in torque-transmitting mode to the hub; and one-way stop means for arresting the pulley in a first stop position with respect to the hub or the seismic mass in a first direction, when the elastic means reach a predetermined torsional load. | 04-22-2010 |
20100234156 | PULLEY ASSEMBLY FOR A START-STOP BELT DRIVE - Described herein is a pulley assembly for a start-stop belt drive, comprising a hub having an axis and designed to be connected to a crankshaft of an internal-combustion engine, a pulley, which is designed to co-operate with a belt of a belt drive and is connected in a rotatable way on the hub, and a seismic mass, which is connected to the hub so as to rotate with respect to the hub so as to define a damping device for damping torsional vibrations. | 09-16-2010 |