Patents by Inventor Carl-Bertil Ihrman

Carl-Bertil Ihrman 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: 4445590
    Abstract: A scaffold plank correction arrangement comprises a pair of identical connectors, each having a horizontal flat portion attached to a plank and a folded-down tongue portion integrally formed therewith. A transverse slit is provided in the flat portion of each connector, which slit extends parallelly to the common boundary between the flat portion and the tongue. When the connectors are placed in an overlapping relationship, the tongue of one connector protrudes through the slit in the other connector whereby a direct connection is formed between the ends of two adjacent planks (FIG. 2).
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: May 1, 1984
    Assignee: Floby Durk
    Inventor: Carl-Bertil Ihrman