Patents by Inventor Friedhelm Steffen

Friedhelm Steffen 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: 6024364
    Abstract: A seal that can be used in groove surfaces, in permanent glasswork, or in casement windows and is comprised of a sealing profile 1 having a profile base 3 and an anchoring wedge 2. On the side of the profile base 3 that is opposite the anchoring wedge 2, a sealing pad 4 and a sealing lip 5 are formed, and a nose strip 6 is positioned on the end of the sealing pad 4. These parts of the sealing profile 1 are made of a thermoplastic rubber. They are to be joined to the semi-finished closure of the window shortly following extrusion by the manufacturer. The corresponding semi-finished product can then be cut to size and joined by the window builder with the sealing profiles 1 being bonded together at the same time so that the entire seal is guaranteed. This makes the window builder's step of "inserting the sealing profile" completely unnecessary.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: February 15, 2000
    Assignee: Saar-Gummiwerk GmbH
    Inventor: Friedhelm Steffen
  • Patent number: 5932312
    Abstract: The invention relates to a sealing profile 1 for plastic, metal, and even wooden windows that is able to cover large gaps because the sealing lip 13 and the sealing gap 12 are of a specific form and occupy a specific position. Also, it is able to do this by the fact that they are comprised of different soft and hard plastic materials. The sealing lip 13 and the sealing pad 12 are arranged at a V-shaped incline in relation to one another, with the boundary surface 14 between the softer material of the sealing pad 12. The harder material of the sealing lip 13 then extends very close to the sealing lip 13 on one side and to the anchoring wedge on the other. In addition to the security of being able to span large gaps without problems, the sealing profile 1 also provides the advantage of being able to be completely mounted in corners without difficulty. It also ensures that a secure seal is created since the sealing pad 12 and the sealing lip 13 become properly molded when installed against the glass pane 2.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: August 3, 1999
    Assignee: Saar-Gummiwerk GmbH
    Inventor: Friedhelm Steffen