Patents by Inventor Kjell Rehn

Kjell Rehn 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).

  • Machine spindle having a gas spring-operated tool-clamping mechanism
    Patent number: 7008153
    Abstract: A machine spindle includes a casing and a clamping mechanism disposed in the casing. The clamping mechanism includes front and rear drawbars which are relatively movable axially within the casing. A gas spring biases the rear drawbar rearwardly, and a force transmitting mechanism transmits such rearward motion to the front drawbar for moving the front drawbar rearwardly. In response to its rearward movement, the front drawbar actuates a clamp for clamping a tool. The gas spring includes a housing disposed in the casing and defining a gas chamber having a front wall through which the rear drawbar extends. The gas spring also includes a piston disposed in the gas chamber for axial movement therein. The piston is releasably connected to a rear end of the rear drawbar by a releasable coupling disposed in the chamber.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: March 7, 2006
    Assignee: Sandvik AB Sandviken
    Inventors: Kjell Rehn, Sören Olsson
  • Machine spindle having a gas spring-operated tool-clamping mechanism
    Publication number: 20050002748
    Abstract: A machine spindle includes a casing and a clamping mechanism disposed in the casing. The clamping mechanism includes front and rear drawbars which are relatively movable axially within the casing. A gas spring biases the rear drawbar rearwardly, and a force transmitting mechanism transmits such rearward motion to the front drawbar for moving the front drawbar rearwardly. In response to its rearward movement, the front drawbar actuates a clamp for clamping a tool. The gas spring includes a housing disposed in the casing and defining a gas chamber having a front wall through which the rear drawbar extends. The gas spring also includes a piston disposed in the gas chamber for axial movement therein. The piston is releasably connected to a rear end of the rear drawbar by a releasable coupling disposed in the chamber.
    Type: Application
    Filed: April 14, 2004
    Publication date: January 6, 2005
    Applicant: SANDVIK AB
    Inventors: Kjell Rehn, Soren Olsson