Patents by Inventor Paul Rahn

Paul Rahn 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).

  • Successive welding of immediately consecutive chain links
    Patent number: 4149058
    Abstract: For the successive welding to immediately consecutive links of a chain at a welding station, the chain is advanced to bring each link in turn to the welding station, the links flanking the link to be welded are positioned in a common plane perpendicular to the orientation of the link to be welded by orienting edges of two guides disposed to respectively opposite sides of the welding station, and each guide is constituted by a pair of webs spaced from its respective orienting edge, and arranged to support the straight sides of alternating chain links, and a region between the webs and the orienting edge in which the chain is free to rotate or twist about its longitudinal axis.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: April 10, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Paul Rahn
  • Apparatus for the successive welding of consecutive chain links
    Patent number: 4133999
    Abstract: For the successive welding of the joints of consecutive links forming a link chain, the chain is advanced in a chain welding machine to bring a link to be welded directly below a welding position; the two links flanking the link to be welded are aligned in a common plane of alignment while a tensioning force is applied to the chain parallel to the direction of chain advance. Thereafter, the link to be welded is raised into a welding position in a plane disposed at 90.degree. to the plane of alignment. Subsequently, the link is immobilized in the welding position and its joint is welded. Upon completion of the welding step, the just-welded link is lowered from the welding position.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: January 9, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Bruno Ebel, Gunter Krumholz, Paul Rahn
  • Method and apparatus for the successive welding of consecutive chain links
    Patent number: 4012618
    Abstract: For the successive welding of the joints of consecutive links forming a link chain, the chain is advanced in a chain welding machine to bring a link to be welded directly below a welding position; the two links flanking the link to be welded are aligned in a common plane of alignment while a tensioning force is applied to the chain parallel to the direction of chain advance. Thereafter, the link to be welded is raised into a welding position in a plane disposed at 90.degree. to the plane of alignment. Subsequently, the link is immobilized in the welding position and its joint is welded. Upon completion of the welding step, the just-welded link is lowered from the welding position.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: March 15, 1977
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Bruno Ebel, Gunter Krumholz, Paul Rahn