Patents Assigned to Hydrel A.G.
  • System for securing guide rails in machine stand
    Patent number: 4068906
    Abstract: A machine stand having a planar surface is formed with a groove of predetermined width. A precision guide rail slightly narrower than the groove is received in this groove and has an edge confronting and spaced from one of the flanks of the groove. A corrugated spring steel holding element is compressed between the edge of the rail and the flank of the groove and has corrugations extending transverse to the plane of the machine stand.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: January 17, 1978
    Assignee: Hydrel A.G.
    Inventors: Werner Dur, Rene Forster
  • Device for protecting tools and workpieces from damage on a hydraulically or pneumatically operated stamping press
    Patent number: 4006655
    Abstract: A device for precluding improper operation of a stamping press including a control cylinder the piston of which is impinged on one side by a pressure medium and on the other side by a pressure medium having a variable constant pressure. Electrical switch elements are utilized to prevent the stamping operation from progressing unless preset conditions exist.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: February 8, 1977
    Assignee: Hydrel A.G.
    Inventor: Martin Maurer
  • Series roll body conveyance
    Patent number: 3960413
    Abstract: A roller body cage, such as a linear bearing cage rail structure having a series of roller bodies which are separated from each other by interposed spacer inserts, and which are prestressed in the longitudinal axial direction of the cage rail through the intermediary of one or more spring elements so as to provide a frictional force between the roller bodies and spacer inserts.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: June 1, 1976
    Assignees: Hydrel A.G., W. Schneeberger AG
    Inventors: Hermann Abbuhl, Hans Tanner