Patents by Inventor Ingemar Dagh
Ingemar Dagh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7451858Abstract: Disc brake for a heavy vehicle having a disc-shaped rotor consisting of a cast iron alloy and a calliper supporting a brake lining which is intended to be pressed against the said rotor during braking.Type: GrantFiled: October 10, 2003Date of Patent: November 18, 2008Assignee: Volvo Lastvagnar ABInventors: Johan Hultèn, Ingemar Dagh
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Patent number: 7416259Abstract: The invention relates to a method and an arrangement for mounting a wheel cap on a vehicle, the vehicle having rims with exposed fasteners for fastening to a wheel hub. The method includes mounting of a holder by fasteners of the rim, the holder having a first contact surface for resting against the rim and a second contact surface lying substantially parallel to and at a distance from the first contact surface, and where the mounting of the holder is done by at least two fasteners of the rims interacting with openings in the first contact surface of the holder. The method includes mounting of the wheel cap on the holder by a plurality of fasteners on the inner side of the wheel cap interacting with openings for the fasteners of the rim in the second contact surface of the holder.Type: GrantFiled: March 23, 2006Date of Patent: August 26, 2008Assignee: Volvo Lastvagner ABInventors: Ingemar Dagh, Anders Trygg
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Publication number: 20070255475Abstract: Method and an arrangement for controlling the driving brakes of a vehicle or a vehicle combination with at least two wheel axles, each axle having two or more wheels with tires. The arrangement includes a control unit (1, 21) for controlling the brakes and a signal generator for generating a signal proportional to the air pressure in one or several tires. The control unit (1, 21) is arranged, upon the reception of the signal, to detect an abnormal drop in pressure and to reduce the braking function for all the braking devices (6, 7; 8, 9; 26, 27; 28, 29) on the axle (10, 11; 30, 31) on which an abnormal drop in pressure has been detected in any one tire.Type: ApplicationFiled: December 12, 2005Publication date: November 1, 2007Applicant: VOLVO LASTVAGNAR ABInventors: Ingemar Dagh, Niklas Frojd, Bjorn Antonsson
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Publication number: 20070014502Abstract: A bearing arrangement having a roller bearing (3; 4) having an inner race (5; 8), bearing rollers (6; 9) and an outer race (7; 10) in which the roller bearing (3; 4) is arranged to support a wheel hub (2) on a wheel axle (1). The bearing arrangement further includes a first seal (17, 22) and a second seal (19, 24) which have been arranged on either side of the bearing rollers (6, 9), wherein closed bearing spaces (18, 21; 23; 26) are delimited between the first seal (17, 22) and the bearing rollers (6; 9), and between the second seal (19; 24) and the bearing rollers (6; 9), respectively. The invention facilitates an improved arrangement in the form of a combined bearing and sealing device that is assembled in advance to allow simple mounting on a wheel axle.Type: ApplicationFiled: November 11, 2005Publication date: January 18, 2007Applicant: VOLVO LASTVAGNAR ABInventor: Ingemar DAGH
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Patent number: 7097010Abstract: Brake disc for a vehicle disc brake, comprising a radially inner hub portion (1a), intended to be non-rotatably joined to a wheel hub, and a surrounding, radially outer disc portion with opposing friction surfaces. The outer disc portion is formed by two disc elements (4) joined to the hub portion, and which are separated by spacers (7a–7f), which define passages for cooling air and of which at least some (7a, 7b) are in the form of fan vanes to generate an airflow from the passage inlets (10) at the outer periphery of the disc to the passage outlets (11) at the outer periphery of the disc.Type: GrantFiled: October 13, 2000Date of Patent: August 29, 2006Assignee: Volvo Lastvagnar ABInventors: Johan Hulten, Ingemar Dagh
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Publication number: 20060158020Abstract: The invention relates to a method for mounting rim accessories on a vehicle, the vehicle having rims with fasteners for fastening the rim to a wheel hub, the method including mounting of a bracket including at least two sections, the bracket having a first contact surface along its outer periphery for resting against an interesting contact surface on the inner periphery of the rim, the radially inner contact surface lying substantially parallel to and adjoining an axially outer edge of the rim. The method includes mounting the bracket such that adjoining end surfaces of the sections of the brackets are forced apart, thereby clamping the bracket fast to the rim, and mounting of an accessory on the bracket, the bracket having at least a second contact surface extending radially inwards along the inner periphery of the rim. The second contact surface is provided with at least two openings in each of the sections of the bracket for interaction with at least a corresponding number of fasteners on the accessory.Type: ApplicationFiled: March 23, 2006Publication date: July 20, 2006Inventors: Ingemar Dagh, Anders Trygg
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Publication number: 20060158021Abstract: The invention relates to a method and an arrangement for mounting a wheel cap on a vehicle, the vehicle having rims with exposed fasteners for fastening to a wheel hub. The method includes mounting of a holder by fasteners of the rim, the holder having a first contact surface for resting against the rim and a second contact surface lying substantially parallel to and at a distance from the first contact surface, and where the mounting of the holder is done by means of at least two fasteners of the rims interacting with openings in the first contact surface of the holder. The method includes mounting of the wheel cap on the holder by a plurality of fasteners on the inner side of the wheel cap interacting with openings for the fasteners of the rim in the second contact surface of the holder.Type: ApplicationFiled: March 23, 2006Publication date: July 20, 2006Inventors: Ingemar Dagh, Anders Trygg
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Patent number: 7032724Abstract: Brake disc for a vehicle disc brake, comprising a radially inner hub portion (1a) intended to be non-rotatably joined to a wheel hub and a surrounding, radially outer disc portion with oppositely facing friction surfaces. The outer disc portion is formed of two disc elements (4) joined to the hub portion, which are separated by spacers (7a–7d), which define passages for cooling air.Type: GrantFiled: October 19, 2000Date of Patent: April 25, 2006Assignee: Volvo Lastvagnar ABInventors: Johan Hulten, Ingemar Dagh
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Publication number: 20040129509Abstract: Disc brake for a heavy vehicle having a disc-shaped rotor consisting of a cast iron alloy and a calliper supporting a brake lining which is intended to be pressed against the said rotor during braking.Type: ApplicationFiled: October 10, 2003Publication date: July 8, 2004Applicant: VOLVO LASTVAGNAR ABInventors: Johan Hulten, Ingemar Dagh
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Publication number: 20040118642Abstract: Method and arrangement for providing a disc brake (1) for land vehicles having a brake disc (2) rotating with a wheel axle (3). A brake caliper (4) is mounted in a movable manner in a nonrotating wheel-axle housing that is arranged about said wheel axle (3). The two brake linings (5), one on each side of the brake disc (2), are configured in such a way that, when acted upon by an activating mechanism (8), they are caused to bear against the sides (9) of the brake disc (2) for transmitting a braking torque to the wheel axle (3). The brake caliper (4) includes two brake-lining holders (10, 11) which are axially displaceable relative to one another and relative to the wheel-axle housing (3). The brake-lining holders (10, 11) each have at least one actuation surface (12, 13, 14, 15)for engagement with the activating mechanism (8), as a result of which the brake-lining holders (10, 11) are displaced toward each other upon activation.Type: ApplicationFiled: January 13, 2004Publication date: June 24, 2004Applicant: VOLVO TRUCK CORPORATIONInventors: Johan HULTEN, Ingemar DAGH
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Patent number: 6330937Abstract: A wheel hub and brake disc device for a vehicle wheel, comprising a wheel hub journalled on an axle and having outer splines meshing with inner splines on a brake disc supported on the wheel hub. The disc is prevented from displacement in one axial direction by a broken retainer ring (14), which is located in a peripheral groove. One end portion (17) of the ring is bent radially inwards to form a lock pin, which protrudes into a spline groove to prevent the ring from rotation.Type: GrantFiled: March 15, 2001Date of Patent: December 18, 2001Assignee: Volvo Lastvagnar ABInventors: Ingemar Dagh, Anders Carlsson
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Patent number: 6315087Abstract: Disc brake arrangement including a bracket adapted to be fixed to a vehicle and a brake caliper support securely mounted thereon. The bracket is made with semi-circular seats and the caliper support with cylindrical pins which are arranged so that the caliper support is held in place on the bracket by the force of gravity when the pins are received in their seats. The screw holes for the mounting screws in the caliper support coincide with corresponding screw holes in the bracket.Type: GrantFiled: April 30, 1999Date of Patent: November 13, 2001Assignee: Volvo Lastvagnar ABInventors: Jan-Olof Bodin, Ingemar Dagh
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Patent number: 6257674Abstract: Wheel hub for a vehicle wheel, comprising a bearing portion (1) with bearing seats (5, 6), a rim mounting flange (2) and a carrier portion (3) for a brake disc (20). The bearing portion and the carrier portion are joined to each other in such a way that an annular gap (15) is formed between them. The annular gap is open at one end and communicate with channels (22) which open in a root portion (11) of the mounting flange.Type: GrantFiled: January 12, 1999Date of Patent: July 10, 2001Assignee: Volvo Lastvagnar ABInventors: Ingemar Dagh, Anders Carlson
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Patent number: 6217046Abstract: Wheel suspension for a non-driven steerable vehicle wheel, comprising a kingpin (3) fixed in a front axle member (1), and having upper and lower bearings (17, 18) by means of which a wheel spindle (12) is pivotable relative to the member. The upper bearing (17) is a taper roller bearing with an inner ring (23), which is made in one piece with a spacer sleeve (24), which is clamped against the member. An elastic sealing ring (29) is held between the spacer sleeve and a surrounding cylindrical surface on the upper spindle ear (13) of the spindle.Type: GrantFiled: November 2, 1999Date of Patent: April 17, 2001Assignee: Volvo Lastvagnar ABInventors: Jan-Olof Bodin, Ingemar Dagh
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Patent number: 6203206Abstract: Apparatus for sealing bearing assemblies includes a first bearing with a first inner race, a second bearing with a second inner race, a shaft, the first and second inner races being juxtaposed on the shaft with their inner surfaces facing the shaft, thus forming a gap between opposing edges of the races, the opposing edges of the first and second inner races are beveled to form a deformation. The apparatus has an annular ring including a positioning member having an inwardly projecting edge for axially positioning the annular ring on the first and second inner races, and a seal for sealing the annular ring against the first and second inner races. The inwardly projecting edge of the positioning member engages the beveled opposing edges of the first and second inner races so that oil supplied between the shaft and the inner surfaces of the races is prevented from flowing through the gap.Type: GrantFiled: May 6, 1999Date of Patent: March 20, 2001Assignee: Volvo Lastvagnar ABInventor: Ingemar Dagh
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Patent number: 6135247Abstract: A wheel hub and brake disc arrangement for a vehicle wheel includes a wheel hub with alternately following grooves and teeth with inclined flanks, and a brake disc, carried on the part of the wheel hub, having a concentric opening which is formed with corresponding teeth and grooves which are adapted to the grooves and teeth of the hub, the brake disc being locked against rotation on the hub and having a slip fit between the disc and the hub. In order to reduce the heat transfer between hub and disc and minimize the stresses in the disc caused by the temperature distribution and the mechanical effects, the tip arc length for each tooth is less than the root arc length for each groove which is delimited by two opposing flanks of adjacent teeth, the flanks each merge at the respective root side of the teeth into a first radius Ra, which in turn emerges into a second radius Rb which forms the bottom of the groove and is common for the two opposing flanks.Type: GrantFiled: March 6, 1998Date of Patent: October 24, 2000Assignee: AB VolvoInventors: Jan-Olof Bodin, Ingemar Dagh
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Patent number: 6029986Abstract: Steering axle arrangement for non-driven steerable vehicle wheel, comprising a kingpin (3), on which a steering knuckle (12) is mounted in upper and lower taper roller bearings (17,18). The bearings are preloaded against bearing seats (20, 22) in the steering knuckle yoke arms (13, 14) by means of upper and lower nuts screwed onto the kingpin ends. The nuts press against the inner rings (23,25) of the bearings.Type: GrantFiled: April 6, 1998Date of Patent: February 29, 2000Assignee: AB VolvoInventors: Jan-Olof Bodin, Ingemar Dagh
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Patent number: 5988613Abstract: This invention relates to a wheel hub and brake disc arrangement for a vehicle wheel comprising a hub mounted via a bearing on a stub axle, a brake disc non-rotatably mounted on a carrier portion of the hub and a lock ring axially fixed at an end of the carrier portion. The lock ring has a first side surface lying in contact with a surface on the brake disc and a second side surface located radially inwardly of the first side surface, the second side surface being in contact with a surface of the hub. The lock ring also has areas located radially between the first and second side surfaces which lack contact both with the surfaces on the brake disc and the brake hub. The lock ring is also provided with circumferentially spaced bosses. The lock ring permits limited axial displacement of the brake disc, relative to the carrier portion of the hub, upon axial loading of the brake disc.Type: GrantFiled: January 5, 1999Date of Patent: November 23, 1999Assignee: Volvo Lastvagnar ABInventors: Ingemar Dagh, Mats Fagergren
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Patent number: 5816595Abstract: Wheel axle for heavy motor vehicle consisting of a cast axle stub unit (10) with a mounting flange and a case spindle unit (9) to which the mounting flange is screwed fast with screws (16).Type: GrantFiled: October 21, 1996Date of Patent: October 6, 1998Assignee: AB VolvoInventors: Jan-Olof Bodin, Ingemar Dagh
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Patent number: 5568846Abstract: A wheel hub and brake disc arrangement for a vehicle wheel, comprising a hub rotatably carried on a shaft portion and presenting an outwardly facing region of non-circular cross-section, and a brake disc which is carried by this region of the hub. The brake disc having a central hole, the shape of which is adapted to the shape of the non-circular cross-section thereby to provide a mutually non-rotatable attachment of the brake disc to the hub. The non-circular region of the hub comprises closely spaced V-shaped ridges (10) and troughs (11), and the central hole of the brake disc is provided with corresponding V-shaped troughs (13) and ridges (14) which are so adapted in relation to the ridges and troughs on the hub that a slip fit between the hub and disc is achieved. The depth of the troughs is greater than the height of the ridges, so that there is a substantial gap between the bottoms of the troughs and the tops of the ridges.Type: GrantFiled: September 14, 1994Date of Patent: October 29, 1996Assignee: AB VolvoInventors: Ingemar Dagh, Jan-Olof Bodin