Patents by Inventor Wolfgang Sommerfeld

Wolfgang Sommerfeld 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: 4614163
    Abstract: An ink pot for felt pens for inscribing posters or the like is described which comprises an ink container (3) and a cover (4) in which openings (5, 6, 7) are disposed for receiving felt pens (8, 9, 10). In the ink container (3) a suction funnel (20) is accommodated which comprises a funnel cone (21) in contact with its outer edge (23) with the inner wall of container (3) and a suction tube (22) which adjoins the funnel cone (21), projects towards the container bottom and terminates just above the latter. In the funnel cone (21) and in the suction tube (22) a suction body (25) is disposed and over the funnel cone (21) there is an ink pad (26) which is in contact with the suction body (25). The suction funnel (20) and the ink pad (26) are fixedly anchored in the ink container (3).
    Type: Grant
    Filed: August 23, 1984
    Date of Patent: September 30, 1986
    Assignee: Esselte Pendaflex Corporation
    Inventors: Nobert Hetzer, Wolfgang Sommerfeld