Patents by Inventor Dirk Johannes Siekmann

Dirk Johannes Siekmann 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).

  • Patent number: 6416451
    Abstract: A safety output chute for a cushioning conversion machine includes a chute having an input end and an output end, the input end including an opening for receiving a flexible cushioning product from an outlet of the cushioning conversion machine; and a plurality of rollers situated inside the chute, the rollers being oriented such that the flexible cushioning product must follow a non-linear path from the input end of the chute to the output end of the chute. Other embodiments of a safety output chute are also disclosed.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: July 9, 2002
    Assignee: Ranpak Corp.
    Inventors: Richard O. Ratzel, Joseph J. Harding, Dirk Johannes Siekmann, Edward W. Lintala
  • Patent number: 5938580
    Abstract: A machine for manufacturing a cushioning product starting from a multi-ply stock (R) material or the like includes a frame (12) having a housing (14) with an exit opening, a stock supply supported by the frame, a forming assembly (28) causing the lateral edges of the stock material to roll inwardly to form a continuous strip (36) having lateral pillow-like portions and a central band, a gear assembly (34) for feeding the stock material through the forming assembly and out the exit opening, a cutting assembly (26) intermediate the gear assembly and the exit opening for cutting a determined length of the continuous strip to produce a cushioning product and, an access assembly (46) for permitting the cushioning product to be fed therethrough and inhibiting access to the cutting assembly from outside the housing.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: August 17, 1999
    Assignee: Ranpak Corp.
    Inventor: Dirk Johannes Siekmann
  • Patent number: 5749539
    Abstract: A cushioning conversion machine of the type that converts sheet-like stock material into resilient-like dunnage product has associated therewith a stock roll holder and loading method characterized by a pair of laterally spaced apart mounts and a stock roll holder having opposite end portions removably supported on the mounts.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: May 12, 1998
    Assignee: Ranpak Corp.
    Inventors: Richard O. Ratzel, Dirk Johannes Siekmann