Patents Assigned to O & K Orenstein & Koppel Aktiengesellschaft
  • Patent number: 6701823
    Abstract: By means of a method and a device for controlling a lift cylinder (2) of working machines, wherein the hydraulic oil from the pressure cylinder space (12) is forced via a control element (3) into the suction cylinder space (11) during lowering by an external force, it is possible in particular to achieve automatic changeover between normal operation and an operating condition in which an additional force in vertical direction can be exerted.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: March 9, 2004
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Jürgen Weber, Volker Bösebech
  • Patent number: 6685277
    Abstract: A method and apparatus for braking a revolvable superstructure of a working machine by counter-steering. A working machine has a superstructure which is driven by a motor via a transmission. A control lever operates a control valve which sends signals to a pivoting pump. The control lever has at least one neutral position and at least two switching positions. When the control lever is moved to a braking position, a switching logic circuit coupled to the pivoting pump is actuated and reverses the pivoting pump. This reverses the direction of revolution of the superstructure and brakes the revolution of the superstructure by counter-steering. A monitoring device coupled to the switching logic circuit monitors the number of revolutions of the superstructure. The braking is stopped when the monitoring device detects that the superstructure has come to a standstill.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: February 3, 2004
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Horst Kohlmorgen, Hans-Joachim Waegner, Ulrich Krüger
  • Patent number: 6309171
    Abstract: In the case of a mobile loading machine with front-end loading equipment, in particular a construction machine, having a lifting frame (1) which is rotatably mounted by the rear end on a front frame part (13) of the loading machine (L) in a lifting-frame pivot point (14) and which can be raised and lowered by means of at least one lifting cylinder (2), a working shovel (5), fork (5′) or the like being coupled to the front end of the lifting frame (1) in a shovel pivot point (6), and a tipping lever (3) being coupled in a central region of the lifting frame (1) in a tipping-lever pivot point (15), the lower end of which lever is connected in a tipping-cylinder coupling point (8) in an articulated manner to a tipping cylinder (7) which is coupled at the other end in a tipping-cylinder pivot point (18) to the frame part (13) and whose upper end is coupled in a tipping-rod pivot point (17) to a tipping rod (4) which is coupled by its other end to the working shovel (5) in a tipping-rod coupling point (21) a
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: October 30, 2001
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Heinrich Arck, Robert Höllwart, Gustav Leidinger
  • Patent number: 6290048
    Abstract: A wheel hub with integral planetary gear mechanism and multidisk brake, in which the outer plates of the brake are actively connected directly to the wheel hub and the inner plates are connected to the axle body via a brake carrier, is to be of simple design and easy to install and to be of small structure.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: September 18, 2001
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Dietmar Kohlmeier, Andreas Meise, Friedrich Wolff
  • Patent number: 5568841
    Abstract: A rear frame for center pivot steered construction machinery which, for receiving adjacent machine parts or subassemblies, is formed of components extending in the longitudinal direction of the frame and constitute bearing components which can be connected with each other by further transversely extending components. When assembled, the result is a basic structure in the shape of a box which is closed or can be closed by machine parts or adjoining subassemblies.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: October 29, 1996
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventor: Thomas Weissbach
  • Patent number: 5375347
    Abstract: A bucket wheel has a conical supporting body constructed as an inner shell rotatably mounted on the bucket wheel axis and a device which co-operates with the supporting body to accommodate the buckets on the outer rim of the bucket wheel. The supporting body is prolonged radially by a prismatic-type outer shell arranged on the supporting body parallel to the device, which has cell-forming dividing walls on its radially outward peripheral region. The prismatic shell, viewed in the radial direction, is shaped from a plurality of approximately trapezoidal steel plates which are welded to one another, making a plurality of bends, to form a polygonal conical envelope.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: December 27, 1994
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventor: Wolfgang Fleischhaker
  • Patent number: 5159992
    Abstract: An infinitely variable hydrostatic transmission drive for self-propelled machines having a plurality of transmission motors which are fed from a common displaceable transmission-drive pump, at least one variable displacement motor having a swashplate which can be swung back into a zero position and at least one fixed displacement motor are provided in hydraulic parallel circuit. The motors operate in at least one case via a common back gearing on a common output, a shift coupling being provided between the variable displacement motor and an output.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: November 3, 1992
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Udo Reinecke, Gustav Leidinger
  • Patent number: 5113570
    Abstract: A process and a device enable tubular straps to be pulled or guided through support roller stations. The strap is rolled until the diameter (D) of the roll is less than the operating diameter (D') and is held in this position by a clamping means which moves with it, such as a mesh sleeve. The desired diameter of the strap is obtained by means of a device whose diameter decreases like that of a nozzle.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: May 19, 1992
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventor: Franz-Albert Steinkotter
  • Patent number: 5100212
    Abstract: A system of a tensioning wheel of multi-part construction for a tracked vehicle and a mounting for the wheel includes (a) a support body on the lateral vehicle superstructure, (b) an idler-wheel carrier which partially surrounds the support body and is displaceable in the longitudinal direction of the vehicle, and (c) an idler wheel which is rotatable around the idler-wheel carrier. Furthermore, a connecting member is guided from the idler-wheel carrier through the wall of the support body, which is made partially hollow as a cavity in the transverse direction of the vehicle, to an adjusting element disposed in the cavity.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: March 31, 1992
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventor: Dieter Schwappach
  • Patent number: 5095640
    Abstract: A bucket wheel body includes a supporting body having a frustoconical region, a radially outer circumferential region, and a radially inner circumferential region. The frustoconical region forms a carrier body; the radially outer region forms a rounded annular carrier for supporting buckets and the radially inner region forms a rounded hub support. The hub support, the annular carrier and the carrier body form a one-piece construction and jointly define an S-shaped cross section. A disc-shaped hub body is attached to the hub support. The hub body has an outer circumferential edge and a central opening. The outer circumferential edge of the hub body is in engagement with the carrier body, and a terminal edge face of the hub support is in engagement with the hub body along a zone radially inwardly of the outer circumferential edge of the hub body.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: March 17, 1992
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventor: Helmut Mohr
  • Patent number: 5082187
    Abstract: In a device for crushing materials, in particular soft stone, a plurality of grates with breaking elements are arranged below a bunker containing the feedstock. At least one of said grates is translationally mobile in the horizontal direction with respect to the other, which facilitates crushing of the feedstock between the vibrating breaker elements and the stationary breaking elements.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: January 21, 1992
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Bernd Kirchhoff, Hermann Mecklenfeld
  • Patent number: 5080221
    Abstract: A conveyor having a roller belt closed in the circumferential direction having overlapping belt edges and an outer circumference and a plurality of belt support rollers guiding the roller belt along a conveying path, each support roller having a running face in contact with the outer circumference of the belt, each support roller defining an overlap with the next following support roller in the circumferential direction so that an imaginary axial extension of its running face intersects the running face of the next following support roller. Each overlap being oriented in the same direction so that in the event the belt rotates in the direction of the circumference, the outer edge of the belt in the overlap region contacts the running face instead of touching the edge of the following support roller.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: January 14, 1992
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventor: Franz-Albert Steinkotter
  • Patent number: 5016945
    Abstract: An arrangement for connecting and moving the plates of a caterpillar track of earth-moving machines in which adjacent chain plates bridge over on a common axis by, in each case, two inner or outer straps having bore holes. A solid chain pin which is moveable in circumferential direction and having a free central region for the action of sprocket-wheel teeth is mounted in the holes.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: May 21, 1991
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventor: Helmut Bentz
  • Patent number: 4986593
    Abstract: A work cabin having a front windowpane, which is to be introducible and fixable in the interior roof space of the cabin, and having roller bearings, which are laterally articulated in the vicinity of corner regions of the front windowpane and are guided in two U-shaped guide rails. Respective spring cable pulleys are disposed in extensions of upper portions of the guide rails remote from the closed position of the front windowpane. Cable ends of the pulleys are guided over guide rollers and are attached to lower poritons of the front windowpane. A shaft spans the upper corner regions of the front windowpane between the roller bearings at those locations, with a hand lever being provided on the shaft for rotating the same.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: January 22, 1991
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventor: Karl Lohmann
  • Patent number: 4960306
    Abstract: The present invention provides a crawler unit having a superstructure and a substructure and an excavating device for recovering bulk material. The excavating device has bearing regions and drive regions and also has vertically arranged shearing drums for cutting free the bearing and drive regions. The shearing drums have upper ends which are inclined obliquely forward.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: October 2, 1990
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Thorwald Kipp, Bernhard Wiechers
  • Patent number: 4955986
    Abstract: A method for the heat treatment of finely granular material, particularly for the manufacture of cement, employs a preferably multi-stage cyclone preheater (2), a rotary tubular kiln (1), a cooler (6) and a kiln off-gas line (5) which is formed between rotary tubular kiln (1) and cyclone preheater (2). The off-gas lines provides a passage substantially in upward direction for the off-gases of the rotary tubular kiln (1) and receives tertiary air fed thereto for the combustion of additional fuel. The tertiary air is provided in two streams from the cooler (6), which cooler is connected behind the rotary tubular (1) on the material side, the streams being introduced into the kiln off-gas line (5) at different heights. In order to separate the combustion of the additional fuel from the precalcination and to avoid the production of injurious nitrogen oxides (NO.sub.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: September 11, 1990
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Hans-Dietmar Maury, Wolfgang Buslowski
  • Patent number: 4934505
    Abstract: A conveyor boom which is mounted to the superstructure of a large-scale conveyor so as to be raised and lowered in a vertical plane, such as a belt boom for a stacker, a discharge belt boom for a bucket wheel excavator or the like in which sets of carrier rollers are mounted on both sides of the hinge point of the discharge belt carrier in a plurality of hinged together carrier roller frame members and, at their articulated connections, are provided with supporting rollers which are supported on the running faces of supporting carrier members mounted below the discharge belt.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: June 19, 1990
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Joachim Rodenberg, Sukru Ceyland
  • Patent number: 4929178
    Abstract: A method for the heat treatment of finely granular material, particularly for the production of cement, employs a multi-stage cyclone preheater, a rotary tubular kiln, a cooler, and a single kiln off-gas line which is formed between the rotary tubular kiln and the cyclone preheater and is flown through substantially in upward direction by the off-gasses of the rotary kiln and to which tertiary air is fed in two partial-streams for the combustion of additional fuel. The method employs steps of feeding fuel to a lower partial stream of tertiary air, directing material to be treated above a second partial stream of tertiary air, and applying precalcined material in countercurrent with the off-gas line below the tertiary air.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: May 29, 1990
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Hans-Dietmar Maury, Wolfgang Buslowski
  • Patent number: 4926571
    Abstract: A connection for connecting compressed-air lines arranged on the body of a floating dredge leading to measuring devices, control devices or the like, with measuring air lines mounted on a suction pipe of the floating dredge used for suction pipe position measuring units for the operation of pneumatic drives of throttle valves or the like arranged on the suction pipe. The measuring air lines are connected to a coupling component which is fastened on the sliding plate of the suction pipe elbow. A coupling countercomponent is fastened to the body of the dredge in the region of the sliding plate. The compressed-air lines lead from the coupling countercomponent to the devices arranged on the body of the dredge.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: May 22, 1990
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventor: Karl Johannsen
  • Patent number: 4852660
    Abstract: A grader has a grader blade which can be pressed against the ground or lifted off it by means of piston-cylinder drives. To be able to vary the downard pressure of the grader blade in its float position, either the piston chamber or the piston ring chamber of each drive can be charged with a working fluid under pressure when the grader blade is in the float position, so that the corresponding drive exerts a force on the grader blade which increases or decreases the downward pressure of the grader blade on the ground. While still allowing the grader blue to follow the contour of the ground.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: August 1, 1989
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventors: Gustav Leidinger, Gunther Proll, Walter Kolb