Patents by Inventor Paul Douglas Rickman

Paul Douglas Rickman 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).

  • Roof construction
    Patent number: 6223481
    Abstract: The invention relates to a roof construction, assembled from aluminium alloy extrusions and sections which may be cut on site to the appropriate dimensions. There is a ring beam, made from a channel and a ridge member in the form of a central extruded aluminium alloy central box member, the channel and member being essentially of the same section. Thus a relatively small number of different extrusions are required.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: May 1, 2001
    Assignee: Rickmans Limited
    Inventor: Paul Douglas Rickman
  • Conservatory roof construction
    Patent number: 6112493
    Abstract: A conservatory roof construction with a ridge member, glazing bars or rafters and two hip bars. Each hip bar has a track extending therealong. A connector plate connects to the track and is both slidable along the length thereof and is hingable with respect to a respective hip, glazing bars (or track rafters) which connect with the hip bars being configured to permit the connection of the connector plate thereto.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: September 5, 2000
    Assignee: Rickmans Limited
    Inventor: Paul Douglas Rickman