Patents by Inventor Gilbert R. Lieberman

Gilbert R. Lieberman 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).

  • Lamp shade and method
    Patent number: 4539631
    Abstract: A lamp shade comprising a hollow seamless shell or foundation molded from thermoplastic material and to which a lamp spider is secured for supporting the shade with respect to a light bulb or lamp fixture. An inwardly projecting collar is molded integrally with the shell around an opening in the shell and holes are provided in the collar to receive the ends of arms of a lamp spider which are secured therein by fasteners. A method of covering a shade wherein yarn or thread is helically wound around the shade is also disclosed.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: September 3, 1985
    Inventor: Gilbert R. Lieberman
  • Locking means for a lamp holder
    Patent number: 4294503
    Abstract: Locking means for a lampholder having an opening to receive a threaded component. A locking member is captively carried by the lampholder and is mounted for limited movement in a direction normal to the axis of the opening, and the locking member has at least one inwardly facing edge for contact with a threaded component threadably inserted into the lampholder, the locking member permitting threaded insertion of the threaded component and preventing inadvertent threaded removal.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: October 13, 1981
    Assignee: Gilbert Products
    Inventor: Gilbert R. Lieberman