Patents by Inventor Hugo De Widt

Hugo De Widt 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).

  • Luminaire with resilient sleeve and band connection
    Patent number: 4473869
    Abstract: Luminaire comprising a base in which there is an opening, and a lamp housing having a projecting tubular wall portion which is detachably lockable in the opening of the base and is rotatable therein around its longitudinal axis.In accordance with the invention the said wall portion is provided around its end to be placed in the opening with a resilient metal sleeve, which is fixed in the axial direction, the tubular wall portion being rotatable with resistance within the sleeve. On placing the wall portion in the opening the sleeve assumes a fixed position with respect to the base.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: September 25, 1984
    Assignee: U.S. Philips Corporation
    Inventor: Hugo De Widt
  • Luminaire
    Patent number: 4419719
    Abstract: Luminaire for a tubular discharge lamp, having an elongate housing (1) the ends of which comprise means (4, 5) for accommodating the lamp, at least an electric ballast (6) being present in the housing (1), which housing is filled with cured foamed plastics material (11), the housing (1) being a through with a generally U-shaped cross-section and the foam (11) extending to the open side of the housing.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: December 6, 1983
    Assignee: U.S. Philips Corporation
    Inventors: Kornelis Boer, Hugo De Widt