Patents Assigned to Hydropulsor AB
  • Method and a device for deformation of a material body
    Patent number: 7028525
    Abstract: The device comprises a stamping member (2) arranged to be conveyed towards and hit a material body (1) with such a velocity that a rebound motion of the stamping member (2) is generated while a permanent deformation of the material body (1) is generated. The device has structure (3) for counteracting the rebound and generating at least one additional impact of the stamping member (2) against the material body (1) within a period, during which kinetic energy in the material body (1) generates an additional deformation in the body.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: April 18, 2006
    Assignee: Hydropulsor AB
    Inventors: Lars Troive, Yngve Bergström
  • Method of using an impact machine
    Patent number: 6764644
    Abstract: A method is disclosed for forming an article that includes the steps of filling a mold with a solid or particulate material, inserting a tool into the mold with a portion of the tool extending from the mold, and striking the tool with an impact ram to adiabatically coalesce the material in the mold to form an object having the shape of the mold. An apparatus for performing the method is also disclosed.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: July 20, 2004
    Assignee: Hydropulsor AB
    Inventor: Kurt Dahlberg
  • Stamping press arrangement and method
    Patent number: 6751997
    Abstract: Stamping press arrangement, comprising an impact member (3), a supporting member (4) and a movably arranged cutting tool (5), the impact member (3) being arranged to perform at least one striking movement against the cutting tool (5) for cutting a blank (1) being held by the supporting member (4). The stamping press arrangement comprises a moulding tool (7) for moulding a segment (2) cut from said blank (1) and that the impact member (3) is arranged also to influence the moulding tool (7).
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: June 22, 2004
    Assignee: Hydropulsor AB
    Inventors: Olle Gustafsson, Lars-Erik Dahl
  • Impact machine
    Patent number: 6202757
    Abstract: When cutting metal rods, for instance, percussion machines are used that utilize stored kinetic energy which has been produced either mechanically or by the use of compressed gas. A drawback is the inability to accurately control the cutting process. The present invention makes use of hydraulics to control the process, thereby achieving total control of the course of the function.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: March 20, 2001
    Assignee: Hydropulsor AB
    Inventor: Kurt Dahlberg