Patents Assigned to Dayco Europe S.r.l.
-
Patent number: 8353795Abstract: Described herein is a tensioner for a belt of a drive of a motor vehicle, comprising: at least two idle pulleys designed to co-operate with respective belt runs of the belt; two arms bearing the pulleys; and elastic means acting at least indirectly on the arms for tensioning the belt, in which the arms are constrained to one another, and at least one of the arms is hinged to a first mobile axis.Type: GrantFiled: October 15, 2004Date of Patent: January 15, 2013Assignee: Dayco Europe S.R.L.Inventors: Andrea Montani, Alberto Ruffini
-
Patent number: 8337344Abstract: A tensioner for a belt drive, comprising: a base carrying a pin defining an axis; a tensioning arm, which can rotate about the pin and supports an idle pulley; and a damping element, which is constrained to a hinge point eccentric with respect to the axis and is carried by one between the base and the tensioning arm so as to co-operate with a friction surface carried by the other between the base and the tensioning arm. The belt tensioner further comprises a resilient element having a first end portion connected in a single point to the damping element and a second end portion connected to the other between the base and the tensioning arm to cause a rotation of the damping element about the hinge point against the friction surface.Type: GrantFiled: June 20, 2005Date of Patent: December 25, 2012Assignee: Dayco Europe S.R.L.Inventors: Maria Cesare Meano, Renzo Gozzano
-
Patent number: 8326514Abstract: A drive for an internal combustion engine having a predetermined take-up rate (TU) and comprising a drive pulley, a driven pulley, a shoe and an oil wet toothed belt cooperating in contact with a guiding surface of the shoe, presenting an optimized winding angle (?) of the guiding surface to decrease the power dissipated on the toothed belt.Type: GrantFiled: March 27, 2007Date of Patent: December 4, 2012Assignee: Dayco Europe S.R.L.Inventor: Adriano Rolando
-
Patent number: 8308590Abstract: A hub-pulley assembly comprising a hub adapted to be connected to a rotational member of a motor vehicle and having an axis, a pulley adapted to cooperate with a drive belt and driving means arranged between the hub and the pulley. The driving means comprise bidirectional disengagement means which allow a relative rotation between the hub and the pulley in both directions.Type: GrantFiled: January 10, 2006Date of Patent: November 13, 2012Assignee: Dayco Europe S.r.l.Inventors: Carlo Fiordaliso, Alberto Ruffini
-
Patent number: 8292765Abstract: A tensioner (1) for a belt drive comprises a base(2, 3) defining an axis (A), a mobile element (4) hinged onto axis (A) and defining a guiding surface (22), an elastic helical element (18) having a square or rectangular cross section for actuating the mobile element (4) and an idle pulley (5) surrounding the guiding surface (22). The tensioner (1) further comprises a journal bearing (4, 29, 32, 33) for supporting the pulley (5) on the guiding surface (22).Type: GrantFiled: May 6, 2007Date of Patent: October 23, 2012Assignee: DAYCO Europe S.r.L.Inventors: Adriano Rolando, Gianluca Pane
-
Patent number: 8272981Abstract: Pulley assembly for a continuously-variable vehicle transmission, comprising a support element having an axis, a first half-pulley rotationally connected to the support element, a second half-pulley facing the first half-pulley to define a seating adapted to house a drive belt, the second half-pulley being axially and circumferentially mobile in relation to the support element, and cam means functionally inserted between the second half-pulley and the support element to control the position of the second half-pulley. The cam means define a plurality of circumferential cavities carried by a peripheral portion of the second half-pulley, said cavities being defined by the first and second sides which are transverse to axis, and comprise a plurality of cam-followers which are connected to the support element and housed in the corresponding circumferential cavities to cooperate selectively with the first and second sides.Type: GrantFiled: August 18, 2005Date of Patent: September 25, 2012Assignee: Dayco Europe S.r.L. Con Unico SocioInventors: Alessio Galletti, Paolo Seta
-
Patent number: 8272983Abstract: A tensioner for a belt drive comprises a pivot defining an axis, a support hinged to the axis and defining a guiding surface preferably having a circular profile, an elastic element for actuating the support and a crown pulley eccentric with respect to the axis and surrounding the guiding surface. The tensioner further comprises a journal bearing to support the pulley on the guiding surface.Type: GrantFiled: December 4, 2006Date of Patent: September 25, 2012Assignee: Dayco Europe S.R.L.Inventors: Adriano Rolando, Gianluca Pane
-
Patent number: 8257211Abstract: A pulley assembly for a 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, elastic spiral means 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 tangential force drive coupling pulley to the supporting member. In particular, the elastic spiral means comprise a supporting element and sliding portion comprising at least one runner carried by the supporting element and sliding along the sliding walls.Type: GrantFiled: July 7, 2006Date of Patent: September 4, 2012Assignee: Dayco Europe S.R.L.Inventor: Hervé Riu
-
Patent number: 8231488Abstract: A pulley assembly comprising a hub with an axis and adapted to be rigidly connected to a rotating shaft of an engine assembly, a turning annular pulley of ferromagnetic material supported at least indirectly on the hub, a ring of electrically conducting material rotationally connected to the hub, and at least a pair of magnets rigidly connected to the pulley and facing the ring. The pulley defines a cavity accomodating accommodating said ring.Type: GrantFiled: October 28, 2005Date of Patent: July 31, 2012Assignee: Dayco Europe S.r.l. con Unico SocioInventors: Nicola Amati, Giancarlo Genta, Andrea Tonoli
-
Patent number: 8206255Abstract: Actuator adapted to cooperate with a drive of an endothermic engine including power source and a releasable accessory, the actuator including a box-shaped casing, a motorized eccentric group housed inside the casing and including a reduction gearing, an arm cooperating with the eccentric group and supporting a friction wheel adapted to cooperate with the accessory and with the power source, the arm being mobile between an engaged position and a disengaged position of the accessory.Type: GrantFiled: February 24, 2006Date of Patent: June 26, 2012Assignee: Dayco Europe S.r.l.Inventors: Federico Domenico Licata, Gianluca Cariccia, Heinz Lemberger
-
Publication number: 20120157251Abstract: There is described a belt comprising a body made of a first elastomeric material, in which a plurality of longitudinal filiform resistant inserts is embedded, and a working surface coated by a coating fabric, advantageously the working surface consists of a toothing. The first elastomeric material comprises fibres which extend in a direction substantially perpendicular to the resistant inserts and substantially parallel to a surface defined by the axes of the resistant inserts.Type: ApplicationFiled: April 6, 2009Publication date: June 21, 2012Applicant: Dayco Europe S.r.l.Inventors: Marco Di Meco, Cario Baldovino, Fabio Nardone, Licinia Licini
-
Patent number: 8202183Abstract: 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.Type: GrantFiled: July 7, 2006Date of Patent: June 19, 2012Assignee: Dayco Europe S.r.l.Inventor: Hervé Riu
-
Publication number: 20120149510Abstract: The invention relates to an elastomeric composition comprising a branched polymer obtained from a polymer selected from the group consisting of NBR, HNBR, XHNBR, EP(D)M, and maleized EPDM and from a compound adapted to form a bond at a bond of the polymer to form a side chain. This compound comprises a group Y comprising a perfluoroalkyl functional group and a functional group adapted to react with the double bond. Preferably, Y=F(CF2CF2)m/wherein m is in the range between 2 and 20; R is selected from the group consisting of a double bond C?C, a triple bond C?C, a functional alcoholic, carboxylic, esteric, acrylic, methacrylic group. The invention also relates to the use of a composition as a body compound for a drive belt and to the use thereof in an oil bath.Type: ApplicationFiled: March 26, 2010Publication date: June 14, 2012Applicant: Dayco Europe S.r.l.Inventors: Carlo Baldovino, Fabio Nardone
-
Patent number: 8182382Abstract: 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. The pulley assembly comprises a band clutch co-operating selectively between the hub and the pulley and comprising a coil element and electromagnetic actuation means for governing clutching and de-clutching of the coil element.Type: GrantFiled: March 21, 2006Date of Patent: May 22, 2012Assignee: Dayco Europe S.r.l.Inventor: Hervé Riu
-
Patent number: 8156903Abstract: Actuating device for a recirculation pump of a cooling circuit of an internal combustion engine comprising a pulley suitable for being rotationally driven by the engine, a driven shaft for driving the pump and an electromagnetically controlled coupling interposed between the pulley and the driven shaft, in which the electromagnetic coupling comprises an electromagnet, coupling mechanism controlled by the electromagnet and mobile between an engagement position in which the pulley is connected to the driven shaft and a disengagement position, and an elastic member for maintaining an engagement member in the engaged position when the electromagnet is not energized.Type: GrantFiled: August 29, 2005Date of Patent: April 17, 2012Assignee: Dayco Europe S.r.l. con Unico SocioInventors: Andrea Guala, Gianluca Cariccia, Riccardo Seren Rosso
-
Patent number: 8123641Abstract: A continuous variable transmission belt, comprising an annular continuous band comprising a body reinforced by a longitudinal armature and a plurality of friction plugs connected by coupling of shape with at least one of either an outer spine of the continuous band or an inner surface opposite to the outer spine with respect to the armature, the friction plugs comprising respectively a friction member adapted to cooperate with a pulley of the transmission and a connection member cooperating with the friction member to rigidly connect the friction plug to the continuous band. Each of the connecting members is made of a material having a higher thermal conductivity than that of the friction members and presents an abutting surface against either of the outer spine or the inner surface.Type: GrantFiled: October 4, 2005Date of Patent: February 28, 2012Assignee: Dayco Europe S.R.L. Con Unico SocioInventors: Giuseppe Costa, Sergio Lolli
-
Publication number: 20120040789Abstract: A tightener for a belt drive cooperates with the belt in the presence of oil, and has a pin with a first axis; a base plate integral with and substantially perpendicular to the pin; a cam arm connected in a rotary manner to the pin and movable with respect to the base plate; a contact member carried by the cam arm; and an elastic member connected to the cam arm to activate the contact member against the belt. The tightener also has a friction member made of oil-resistant material and axially supporting the cam arm on the base plate; and axial elastic means for loading the friction member against the base plate.Type: ApplicationFiled: October 12, 2011Publication date: February 16, 2012Applicant: DAYCO EUROPE S.R.L. CON UNICO SOCIOInventor: Michele CANTATORE
-
Patent number: 8105190Abstract: A pulley assembly for a continuously variable transmission in a vehicle, comprising a shaft having an axis, a supporting element rotatable about said axis, a first half pulley rigidly and rotationally connected to said supporting element, a second half pulley facing said first half pulley for defining a seat adapted to accommodate a belt of the transmission, at least one of the first and second half pulleys being longitudinally mobile with respect to the supporting element, and a clutch comprising a second supporting element connected to the shaft, a drum connected to the supporting element and accommodating the second supporting element, and a plurality of friction elements hinged to the second supporting element about respective hinge axes to selectively cooperate with the drum. In particular, the respective centres of gravity of said friction elements are located before the respective hinge axes with respect to a direction of rotation of the shaft which defines a forward running condition of the vehicle.Type: GrantFiled: July 18, 2006Date of Patent: January 31, 2012Assignee: Dayco Europe S.r.l.Inventors: Alessio Galletti, Paolo Seta
-
Patent number: 8100793Abstract: A tensioner (1; 50; 60) for a vehicle belt drive, having a housing (2) defining a cavity (3) having an axis (A); at least one arm (4) fitted to the housing (2) to rotate about the axis (A); an idle pulley (5) fitted to the arm (4); a torsion bar elastic member (6) housed at least partly in the cavity (3) and having a first end portion (15) integral with the arm (4), and a second hand portion (16) connected rigidly to a retaining portion (17) to permit tensioning of the elastic member (6); and a damping device (30) for damping oscillation of the arm (4), and having a conical friction member (32) cooperating axially with a mating surface (34) and loaded by axial elastic means (33). The friction member (32) is interposed between the arm (4) and the housing (2); and the elastic member (6) produces an axial thrust component depending on torsion of the elastic member and for pressing the friction member (32) and the mating surface.Type: GrantFiled: May 12, 2005Date of Patent: January 24, 2012Assignees: Dayco Europe S.R.L. Con Unico Socio, Bayerische Motoren Werke AktiengesellschaftInventors: Luca D'Amicantonio, Heinz Lemberger
-
Patent number: 8083623Abstract: A shoe tensioner for a synchronous belt drive, having a guide member adapted to cooperate with a drive belt and hinged at one end about a first axis; elastic means cooperating with the guide member to tension the belt; and connecting means for connecting the tensioner to a supporting wall. More specifically, the elastic means include a coil spring.Type: GrantFiled: July 29, 2005Date of Patent: December 27, 2011Assignee: Dayco Europe S.R.L. con Unico SocioInventors: Michele Cantatore, Franco Cipollone