Patents by Inventor Jens N. Andresen

Jens N. Andresen 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).

  • Position indicator for an actuating drive
    Patent number: 4728921
    Abstract: A position indicator for an actuating drive device which has a range of positions and includes a potentiometer having a resistance strip with end connectors at opposite ends thereof. A tapping feature includes two independently moveable arms each connected at one end thereof to a moveable part of the drive device and at the other end thereof to the resistance strip in sliding engagement therewith and bridging a section of the resistance strip therebetween. The arms are initially adjustable to the end limiting positions of the drive device.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: March 1, 1988
    Assignee: Danfoss A/S
    Inventors: Jens N. Andresen, Kjeld Hellegaard
  • Servo motor operated by a heatable expansible substances
    Patent number: 4209989
    Abstract: The invention relates to a piston and cylinder type servomotor having an expansible substance and a heating element in the cylinder part. The cylinder part is normally movable and may be connected to a valve or the like which is adjustably movable by the unit. The unit has under and over pressure limiting switches which are located in the force transmitting path of the piston part which is the normally nonmovable part but has a small degree of movement which allows it to interact with the pressure limiting switches.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: July 1, 1980
    Assignee: Danfoss A/S
    Inventor: Jens N. Andresen
  • Servo motor
    Patent number: 4210030
    Abstract: The invention relates to a servo motor assembly in which the linkage is provided between a linearly movable motor part and a rotatable member being controlled. The linkage includes two separate links and the arrangement prevents or minimizes lateral reaction forces from being applied to the linearly movable motor part which would cause undue wear on the bearings thereof.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: July 1, 1980
    Assignee: Danfoss A/S
    Inventor: Jens N. Andresen