Patents Assigned to Jac. Jacobsen A/S
  • Patent number: 4796162
    Abstract: A counterbalanced arm assembly is disclosed which includes a mounting bracket and a first arm pivotally connected to the mounting bracket along a first pivot axis. The first arm includes an inner arm located within it which is pivotally connected to the mounting bracket along a second pivot axis. A spring carrier is located near the first pivot axis and a tension spring is connected between the carrier and the bracket. The spring carrier includes a lower end defining a pair of spaced bearing surfaces located respectively to engage a pair of bearing surfaces on the bracket, with the spring biasing the bearing surfaces into engagement and providing the counterbalancing forces for the arm assembly.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: January 3, 1989
    Assignee: Jac Jacobsen A/S
    Inventor: Jessan C. Krogsrud
  • Patent number: 4744019
    Abstract: A counterbalanced arm assembly is disclosed which includes a mounting bracket and a first arm pivotally connected to the mounting bracket along a first pivot axis. The first arm includes an inner arm located within it which is pivotally connected to the mounting bracket along a second pivot axis. A spring carrier is located near the first pivot axis and a tension spring is connected between the carrier and the bracket. The spring carrier includes a lower end defining a pair of spaced bearing surfaces located respectively to engage a pair of bearing surfaces on the bracket, with the spring biasing the bearing surfaces into engagement and providing the counterbalancing forces for the arm assembly.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: May 10, 1988
    Assignee: Jac Jacobsen A/S
    Inventor: Jessan C. Krogsrud
  • Patent number: 4683526
    Abstract: An asymmetric lamp with an improved reflector assembly is disclosed. The lamp includes a head, a socket for receiving a light bulb, and a front reflector. The socket and the front reflector are mounted in the head. When the light bulb is inserted into the socket, the light bulb defines a transverse axis. The front reflector has a longitudinal cross-sectional shape that is either generally hyperbolic, generally parabolic, or generally elliptic. The front reflector is formed from a plurality of triangular facets. Adjacent facets define a line that is nonparallel to the transverse axis defined by the light bulb. The front reflector is mounted in the head so that the rear edge of the front reflector is positioned proximate the top of the light bulb. The lamp may include a back reflector, preferably made from a nonconductive material. The back reflector is positioned proximate the rear edge of the front reflector.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: July 28, 1987
    Assignee: Jac Jacobsen A/S
    Inventors: Jens C. Krogsrud, Kai O. Sorensen
  • Patent number: 4298921
    Abstract: An electric lamp which provides substantially uniform lighting throughout a work area. The area extends from directly under the lamp a substantial distance beyond the shade. A faceted reflector provides the desired distribution of the light.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: November 3, 1981
    Assignee: Jac. Jacobsen A/S
    Inventors: Jens C. Krogsrud, Kai O. Soerensen
  • Patent number: 4160536
    Abstract: An equapoised arm assembly is counterbalanced by springs enclosed within tubes that are components of the arm assembly. The arm assembly has a lower pair of parallel arms which are pivoted at their lower ends to a swivel bracket that turns about a vertical axis in a fixed bracket. Each of these arms is pivoted at its upper end to a floating bracket that is pivoted to a similar upper pair of parallel arms. An article support bracket is mounted upon the other end of the upper pair of arms and may include a universal joint assembly. The arms are tubular and each pair forms a parallelogram by virtue of the pivotal connections with the respective brackets. A coil spring is enclosed within one arm of each pair of arms to exert a counterbalancing effect upon its pair of arms. A nylon shoe is connected to at least one end of each spring and is slidable within the tube.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: July 10, 1979
    Assignee: Jac. Jacobsen A/S
    Inventor: Jens C. Krogsrud
  • Patent number: D285120
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: August 12, 1986
    Assignee: Jac Jacobsen A/S
    Inventor: Jessen C. Krogsrud