And Laterally Movable Carrier Patents (Class 470/138)
Bolt blank making (Class 470/139)
  • Methods of manufacturing part with hole having cut threads
    Patent number: 11577331
    Abstract: A method of manufacturing a threaded hole in a workpiece includes providing the workpiece having a region with a hole. The method also includes cutting a threading for the hole. Furthermore, the method includes, independent of cutting the threading, densifying the region proximate the hole to reduce material porosity in the region.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: February 14, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATINS LLC
    Inventors: Lokesh Choudhary, Qigui Wang, Tiruttani Munikamal, David A. Wulbrecht, Gregory Melekian, Anil K. Sachdev
  • Tool-holder for machine tools
    Patent number: 6389873
    Abstract: A tool-holder for machine tools, in particular a punch-holder (10) for forging machines utilised for the production of bolts and screws and provided with an oscillating plate (18), is connected to a plate-like support (12) by means of screws (14), and is adjustable on the same by means of eccentrics (16); said plate-like support (12), which bears at least a punch-holder (10), is caused to be interchangeably integral by two or more screws (20) with the oscillating plate (18) of said forging machine.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: May 21, 2002
    Inventor: Eufemia Garlaschi
  • Tool-holder assembly for a machine tool
    Patent number: 6298708
    Abstract: A tool holder having a plurality of tools fixed thereon is used in a production machine such as a production press to position one tool after the other opposite a workpiece holder. All of the tools perform the same operation and can be brought into position by a pneumatic cylinder which can angularly displace a pinion engaging a rack.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: October 9, 2001
    Assignee: Gebr. Hilgeland GmbH & Co.
    Inventors: Kurt Gaul, Wolfgang Ausländer