Patents by Inventor Allan W. Langan

Allan W. Langan 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: 4322122
    Abstract: An improved cigarette lighter plug assembly is provided. The assembly is adapted to obtain current from a vehicle's electrical system through a cigarette lighter for operating remote electrical devices and the like. The assembly comprises, in combination, a hollow cylindrical plug body formed of two releasably joined halves within which is disposed a fuse retainer having a typical automotive glass fuse bearing a metal cap at each end. A first spring contact in the plug body biases the front end of the fuse retainer out the open front end of the plug and the front end of the fuse forward of the fuse retainer so that the fuse can directly contact an electrical terminal in the inner end of a cigarette lighter receptacle. Suitable detents in the plug body and fuse retainer prevent forward escape of the fuse retainer and fuse from the assembly. A second spring contact extends out the side thereof for wedging contact with a second electrical terminal in the sidewall of the receptacle.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: March 30, 1982
    Inventors: Edwin L. Schwartz, Allan W. Langan