Patents by Inventor Wilhelm Klocker

Wilhelm Klocker 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).

  • Process for flanging polytetrafluoroethylene pipes
    Patent number: 4018863
    Abstract: Polytetrafluoroethylene (PTFE) pipes, which may have a supporting metal mandrel placed therein, are flanged. To this end, use is made of a first implement which is a rigid annular plate having a frustoconical element and a bevelled cylindrical plug slightly smaller in diameter than the PTFE-pipe centrally mounted thereon. The first implement is heated once to 180.degree.-210.degree. C and forced into contact with the PTFE-pipe so that the plug opens thereinto. The PTFE-pipe and the first implement projecting thereinto are caused to rotate for 0.5-3 minutes at a speed of 5-10 rpm and under a contact pressure of 5-20 kg/cm.sup.2 of pipe surface area to be flanged whereby the free end of the PTFE-pipe is flared. The first implement is removed and replaced by a second implement which is a rigid annular plate having a bevelled cylindrical plug substantially equal in diameter with the PTFE-pipe centrally mounted thereon. The second implement is heated once to 180.degree.-210.degree.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: April 19, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ernst Schneiders, Wilhelm Klocker