Patents by Inventor William E. Perk

William E. Perk 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).

  • Hollow-louvered ceilings
    Patent number: 4680910
    Abstract: A louvered ceiling construction especially suited for parabolic louvers is claimed. Runners, of the same hollow channel shape as the louver members, are provided with openings into which extensions carried by the louver members are secured. The extensions are entirely concealed within the channels so that a smooth and uniform appearance is presented from below.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: July 21, 1987
    Inventor: William E. Perk
  • Louvered ceiling
    Patent number: 4532749
    Abstract: An improved louvered ceiling construction is disclosed in which louver channel members are suspended from runner channel members by means of outwardly bent tabs on the ends of the channel members. The tabs are inserted behind widened slots in the runner. The runner slots are overlapped entirely by the tabs and louver channel interior so that leakage of light is prevented.
    Type: Grant
    Filed: February 17, 1983
    Date of Patent: August 6, 1985
    Inventor: William E. Perk