Patents by Inventor Christer Lundstrom

Christer Lundstrom 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).

  • Publication number: 20060182595
    Abstract: A robot wrist for an industrial robot. A wrist housing and a wrist part, designated a tilt, are journalled at the wrist housing. The tilt is rotatable relative to the wrist housing about an axis of rotation and includes a drive unit including a motor with a motor housing. A shell part of the motor housing is designed to connect the tilt to the wrist housing.
    Type: Application
    Filed: August 19, 2003
    Publication date: August 17, 2006
    Applicant: ABB AB
    Inventors: Christer Lundstrom, Rafael Nissfolk
  • Patent number: 6848333
    Abstract: Industrial robot arranged with a helical spring based balancing system, which is able to stand up to high load.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: February 1, 2005
    Assignee: ABB AB
    Inventors: Christer Lundström, Rafael Nissfolk
  • Patent number: 6701220
    Abstract: An industrial robot including a manipulator having a control system. The manipulator includes a common gear housing having first and second inner compartments connected with a passage channel. First and second gears are arranged in the first and second inner compartments and are adapted to move the manipulator. A cooling and lubricant medium is disposed in the common gear housing and circulates between the first and second inner compartments through the passage channel.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: March 2, 2004
    Assignee: ABB AB
    Inventors: Christer Lundstrom, Rafael Nissfolk
  • Patent number: 6644602
    Abstract: Guide (20) for a loop of a flexible line (40) between a pair of rotatable parts (12, 14) of an industrial robot (10) that rotate relative to one another around an axis (18), whereby the loop includes a pair of strands (42, 44) of the line joined by a bend (46) that extend around axis (18) with their outsides engaged with the respective parts so that the loop is caused to perform a movement around the axis (18) when the parts rotate relative to one another. To reduce wear on the cover of the line and to facilitate replacing the line, it is suggested that, among other things, the engagement consists of a separate groove (22, 32) arranged for each strand (42 respectively 44).
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: November 11, 2003
    Assignee: ABB AB
    Inventors: Christer Lundstrom, Gunnar Thiede
  • Publication number: 20020162414
    Abstract: Industrial robot arranged with a helical spring based balancing system, which is able to stand up to high load.
    Type: Application
    Filed: May 30, 2002
    Publication date: November 7, 2002
    Inventors: Christer Lundstrom, Rafael Nissfolk
  • Patent number: 6125715
    Abstract: A robot arm comprises an assembly (6) rotatable relative to a part (2) of the arm about an axis extending at an angle to a longitudinal axis of the arm part, said assembly comprising a drive unit (8) and a member (9) driven by the drive unit. A cable (35, 36) comprising one or more lines for communication of energy for driving and/or control purposes extends between the arm part (2) and the drive unit (8). The assembly (6) comprises an axle pin (13) rotatably supported relative to the arm part (2). The cable extends in a space (48) provided in the assembly and comprising a first part space (49) provided in the axle pin (13), the cable being coiled in screw-line-shape in said first part space, and a second part space (50), in which the cable extends from the first part space (49) to the drive unit.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: October 3, 2000
    Assignee: ABB AB
    Inventors: Rafael Nissfolk, Christer Lundstrom
  • Patent number: 5585717
    Abstract: A measuring method for vehicles equipped with an internal combustion engine, the engine including a starter battery and a driven staffer motor used when an attempt is made to start the engine, is disclosed. According to the method, a voltage across a measuring shunt inserted in a current circuit between the battery and the starter motor is repeatedly measured, at a sampling rate, during each revolution of a crankshaft of the engine during activation of the starter motor. Corresponding values of a current delivered from the starter battery to the starter motor are derived from voltage measuring results. Values of the current are registered in a memory of a measuring computer. The registered values are used to establish a status of the combustion engine and its starting system. A value of a derivative of a rotational speed of the combustion engine crankshaft is obtained from the registered values.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: December 17, 1996
    Assignee: AB Volvo
    Inventors: Robert Eriksson, Urban Kristiansson, Christer Lundstrom
  • Patent number: 4695027
    Abstract: A robot installation in a production line includes at least one robot (1) of pendulum type, the arm system (10, 14) of which is pivotable about at least one axis (12). The secondary arm (14) of the robot and a counterweight (16) are so displaceably arranged on the primary arm (10) of the robot that the centre of gravity of the arm system lies on or in immediate proximity to the pivot axis (12) independently of the position of the secondary arm (14) on the primary arm (10). To this end, the counterweight (16) and the secondary arm (14) are movably interconnected by means of a rope (18) running around rope wheels (20) at the ends of the primary arm (10). When mounting several robots of this kind on a stand (34, 35) positioned across the production line (31), the robots are mounted symmetrically in pairs on opposed side walls of the overhead stand part (35).
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: September 22, 1987
    Assignee: Asea Aktiebolag
    Inventors: Carl-Henrik Lindholm, Christer Lundstrom