Patents Assigned to Lohr & Bromkamp GmbH
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Patent number: 4493388Abstract: A wheel bearing assembly wherein the wheel is driven through a universal joint is arranged with the outer joint member of the universal joint in positive driving engagement with the inner bearing ring of the wheel bearing which is connected to drive the wheel hub.Type: GrantFiled: April 22, 1982Date of Patent: January 15, 1985Assignee: Lohr & Bromkamp GmbHInventors: Hans-Heinrich Welschof, Rudolf Beier
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Patent number: 4462723Abstract: A broaching tool is formed with a slot within which an adjusting member is received. By adjusting the position of the adjusting member within the slot, forces are developed against the sides of the slot to deform the broaching tool thereby to adjust the operating dimensions of cutting teeth arranged on the broaching tool in the vicinity of the slot.Type: GrantFiled: May 27, 1982Date of Patent: July 31, 1984Assignee: Lohr & Bromkamp GmbHInventors: Heinz-Peter Walter, Horst Hahn
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Patent number: 4460058Abstract: A wheel bearing assembly driven by a universal joint is arranged to consist of two individual finish-assembled units having its components joined together so as to be easily disconnected and removable. The universal joint is formed with an outer joint member having an end face which is arranged with gear teeth engaging complementary gear teeth formed on the inner bearing ring of the wheel bearing assembly for torque transmission purposes whereby a construction having a shorter axial length may be achieved.Type: GrantFiled: April 22, 1982Date of Patent: July 17, 1984Assignee: Lohr & Bromkamp GmbHInventors: Hans-Heinrich Welschof, Rudolf Beier
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Patent number: 4427085Abstract: A wheel hub assembly for a motor vehicle wheel having: a bearing including an outer bearing ring adapted to be affixed with the vehicle chassis and an inner bearing ring having the vehicle wheel mounted thereon; a rotary joint including an inner joint member and an outer joint member rotatively fixed with the inner bearing ring; and a stepped bore provided in the inner bearing ring opening toward the rotary joint and receiving the outer joint member therein. The outer joint member has on its side facing the bearing a centering surface engaging within the stepped bore to provide a centering effect between the outer joint member and the inner bearing ring. The centering surface simultaneously serves as a welding face for a welded joint formed by a low heat welding process between the inner bearing ring and the outer joint member. The outer joint member is also formed with a surface cooperating with the stepped bore of the inner bearing ring and spaced a distance from the inner bearing ring.Type: GrantFiled: February 26, 1981Date of Patent: January 24, 1984Assignee: Lohr & Bromkamp GmbHInventor: Erich Aucktor
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Patent number: 4405032Abstract: A wheel hub assembly includes a tubular shaped hub member and a univeral joint member connected to the hub member for rotating it about an axis of rotation. The universal joint member fits into the hub member with each having spaced apart confronting surfaces. A filler material is filled into the space between the confronting surfaces and forms a torque transmitting connection between the universal joint member and the hub member.Type: GrantFiled: May 7, 1981Date of Patent: September 20, 1983Assignee: Lohr & Bromkamp GmbHInventors: Hans-Heinrich Welschof, Rudolf Beier
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Patent number: 4392839Abstract: A drive shaft construction particularly for a motor vehicle including a hollow tubular shaft having a pair of end portions formed with a splined configuration adapted to receive driving joints is structured so that the tubular shaft is formed with an intermediate portion having an outer diameter greater than the outer diameter of the end portions, with the wall thickness of the intermediate portion being between 1/8 and 1/15 of the outer diameter of the intermediate portions.Type: GrantFiled: February 26, 1981Date of Patent: July 12, 1983Assignee: Lohr & Bromkamp GmbHInventor: Erich Aucktor
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Patent number: 4392838Abstract: A sealing boot for a universal joint including a pair of terminal portions each engaged with different parts of the joint to provide a protective seal therefor. One of the terminal portions is structured as a non-return valve to permit fluid flow from the interior of the sealing boot to alleviate excess pressure. The non-return valve is formed by an annular collar having channels defined therein with a resilient sleeve extending exteriorly of the sealing boot to be lifted from engagement with a part of the universal joint when pressure within the channel exceeds a specified limit. A resilient sleeve extending interiorly of the sealing boot may also be provided so that atmospheric air may be permitted to enter the boot for pressure equalization.Type: GrantFiled: February 26, 1981Date of Patent: July 12, 1983Assignee: Lohr & Bromkamp GmbHInventors: Hans-Heinrich Welschof, Karl Damian
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Patent number: 4378858Abstract: A driven steering shaft assembly especially for a planetary steering shaft is formed with a universal joint interposed between an axle shaft extending from a differential and a steering shaft for driving a wheel hub or the inner central gear of a planetary set, with the universal joint coupling the axle shaft and the steering shaft together. The universal joint includes an outer joint member coupled with one of the shafts and an inner joint member coupled with the other shaft. A sealing boot is operatively coupled to seal the interior of the universal joint and the sealing boot is releasably attached with the outer joint member of the universal joint. A neck portion of the sealing boot engages the steering shaft in releasable connection therewith but axially slideably movable relative thereto.Type: GrantFiled: July 31, 1980Date of Patent: April 5, 1983Assignee: Lohr & Bromkamp GmbHInventors: Manfred Goft, Dieter Maurer, Erich Aucktor
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Patent number: 4257244Abstract: In a telescopic drive shaft, torque is transmitted between an inner shaft member and an outer shaft member by ball-shaped roll bodies arranged in axially extending rows. The roll bodies are seated in axially extending grooves formed in each of the inner and outer shaft members. The rows of balls are located between transversely arranged guide rings or are held in a cage secured to a guide ring. The inner and outer surfaces of the guide ring are threaded and meshed with threads on the inner and outer shaft members. The pitch of the threads on the outer shaft member is opposite to the pitch of the threads on the inner shaft member.Type: GrantFiled: January 8, 1979Date of Patent: March 24, 1981Assignee: Lohr & Bromkamp GmbHInventor: Hans-Heinrich Welschof
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Patent number: 4229952Abstract: In a homokinetic universal joint, an inner joint member extends into the hollow space formed within an outer joint member. Each of the inner and outer joint members has an axially extending check pin located within the hollow space with the pins extending toward one another. The check pins have an axial length which prevent the angular relation between the inner and outer joint members from being less than 20.degree..Type: GrantFiled: February 13, 1979Date of Patent: October 28, 1980Assignee: Lohr & Bromkamp GmbHInventors: Erich Aucktor, Wolfgang Rubin
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Patent number: 4175319Abstract: Roller bearings are assembled in a circumferential path with a bearing bushing by successively feeding roller bearings to an annular channel formed between a piston and an outer sleeve member. The roller bearings are accumulated in the annular channel until a predetermined number of roller bearings occupy the channel. An axial force is then simultaneously applied to each of the roller bearings accommodated within the annular channel to insert the accumulated roller bearings into a prepositioned bearing bushing. The plurality of roller bearings are fed to and supported in the annular channel in the direction of insertion into the bearing bushing.Type: GrantFiled: February 23, 1978Date of Patent: November 27, 1979Assignee: Lohr & Bromkamp GmbHInventors: Josef Frauenhoffer, Gerd Ruger
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Patent number: 4156353Abstract: A homokinetic joint assembly for transmitting torque between a pair of shaft members is formed with an outer joint member including an internal cavity defined by an interior wall having grooves formed therein and including generally spherically shaped portions. The arrangement of the grooves is such that each groove of the inner joint member cooperates with the groove of the outer joint member to jointly receive in engagement therebetween one of the ball members, with the respective cooperating grooves of the inner and outer joint members being formed to define therebetween a jaw-like recess for the ball members which expands toward the open side of the internal cavity of the outer joint member. The cage is arranged with its exterior wall guided in the internal cavity of the outer joint member and with its interior wall guided along the exterior wall of the inner joint member.Type: GrantFiled: July 12, 1977Date of Patent: May 29, 1979Assignee: Lohr & Bromkamp GmbHInventor: Hans-Heinrich Welschof
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Patent number: 4150553Abstract: A bearing mount for a wheel driven through a constant velocity universal joint has an inner bearing ring which is axially adjacent to an outer joint member of a constant velocity universal joint and is attached to the outer joint member by a welded joint formed by a low temperature welding process.Type: GrantFiled: May 21, 1976Date of Patent: April 24, 1979Assignee: Lohr & Bromkamp GmbHInventor: Erich Aucktor
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Patent number: 4116020Abstract: A constant velocity universal joint comprises an outer joint element having a cavity therein and an inner joint element positioned within the cavity. A plurality of torque transmitting balls are positioned within pairs of opposed grooves formed in the opposing surfaces of the inner and outer joint elements with the grooves being positioned in meridial planes. A ball retaining cage is disposed between the joint elements and has an inner spherical surface coacting with the outer spherical surface of the inner joint member and an outer spherical surface co-acting with a spherical surface portion on the cavity surface of the outer joint element so that the balls are retained in a plane which bisects the angle between the joint elements.Type: GrantFiled: May 21, 1976Date of Patent: September 26, 1978Assignee: Lohr & Bromkamp GmbHInventors: Erich Aucktor, Wolfgang Rubin
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Patent number: 4116019Abstract: In a universal joint there is provided a sealing ring for sealing relative to a trunion and a bearing element surrounding a trunion pin having roller elements adjacent thereto. The sealing ring has a substantially U-shaped cross-section and one leg is positioned between shoulders formed in the bearing element and trunion pin. A portion of a web is positioned in the annular shoulder in the bearing element and the other leg has a sealing lip engaging the trunion pin. A further portion of the web extends radially inwardly of the bearing element to engage the roller elements and to restrain the roller elements against axial movement.Type: GrantFiled: August 13, 1976Date of Patent: September 26, 1978Assignee: Lohr & Bromkamp GmbHInventor: Hans-Heinrich Welschof
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Patent number: 4094376Abstract: A vehicle wheel hub which is driven through a constant velocity universal joint has a bearing assembly mounted on the wheel support of the vehicle. The bearing assembly has an inner race mounted on the wheel hub and an outer race mounted on the wheel support. One end of the wheel hub is non-rotatably and detachably connected to the inner joint member of the universal joint and the other end of the wheel hub has a flange to which a wheel can be attached. A flexible boot encloses the universal joint and extends over the bending range of the outer and inner joint members. The boot can be mounted so as to be rotatable or stationary.Type: GrantFiled: October 29, 1976Date of Patent: June 13, 1978Assignee: Lohr & Bromkamp GmbHInventor: Hans-Heinrich Welschof
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Patent number: 4094517Abstract: In a universal joint there is provided a sealing ring for sealing relative to a trunnion and a bearing element surrounding a trunnion pin having roller bearings adjacent thereto. The sealing ring has an axial portion projecting between the bearing element and the trunnion pin toward the roller bearings. A chamber is formed between the sealing ring and the bearing element. A sealing lip on the axial portion engages the inner wall of the bearing element and defines an angle of less than 90.degree.. The sealing lip is thin and resilient to define an annular membrane.Type: GrantFiled: December 16, 1976Date of Patent: June 13, 1978Assignee: Lohr & Bromkamp GmbHInventor: Erich Aucktor
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Patent number: 4023382Abstract: A constant velocity universal joint has outer and inner joint members with opposed grooves and balls in opposed pairs of the grooves to transmit torque. A cage between the joint members is provided with a number of radial openings to retain the balls in a plane which bisects the angle between the inner and outer joint members formed when the joint is bent and which is at right angles to the cage. The balls engage surfaces of the radial openings which are parallel with the plane and at least on one side of each ball there is provided a supporting plate which engages the ball by a concave spherical surface or a ball groove and which contacts a surface of the cage opening with a planar face. The balls may also be retained within the openings by means of a supporting ring which may be fixed in the opening or capable of movement therein.Type: GrantFiled: June 23, 1975Date of Patent: May 17, 1977Assignee: Lohr & Bromkamp GmbHInventor: Hans-Heinrich Welschof
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Patent number: 4020648Abstract: A constant velocity torque transmitting joint comprises an outer joint member having a bore therethrough and an inner joint member positioned within the bore. A plurality of torque transmitting elements, such as balls, are positioned within pairs of opposed grooves formed in the facing surfaces of the inner and outer joint elements. A cage is disposed between the joint elements and has a plurality of openings to retain the balls therein. The cage has an inner concave surface guided upon a convex spherical surface of the inner joint member and an outer spherical surface guided within the bore. The cage comprises a plurality of individual segments each of which receives at least one torque transmitting element and the segments are supported in the radial direction either by direct mutual engagement or by a retaining ring.Type: GrantFiled: December 5, 1975Date of Patent: May 3, 1977Assignee: Lohr & Bromkamp GmbHInventor: Werner Krude
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Patent number: 4020650Abstract: A constant velocity universal joint has an outer joint member with an axial bore therethrough and an inner joint member within the bore. A plurality of torque transmitting elements, such as balls, are positioned within pairs of opposed grooves formed in the facing surfaces of the inner and outer joint members. The balls are retained in a ball plane in openings in a cage positioned between the inner and outer joint members. The number of balls is at least six and is divisible by a whole number larger than one but less than the number of balls. The balls are so disposed around the axis of the joint that no one ball is diametrically opposed from any other ball.Type: GrantFiled: January 12, 1976Date of Patent: May 3, 1977Assignee: Lohr & Bromkamp GmbHInventor: Werner Krude