Patents by Inventor Richard W. Livingston

Richard W. Livingston 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: 4036346
    Abstract: This invention is a coin operated vacuum apparatus including a housing means mounted on basic support means; a vacuum power means enclosed by the housing means; a coin control means connected to the vacuum power means to control operation thereof; and a hose assembly connected to the vacuum power means. The housing means is constructed of fiberglass material having a cover head assembly and a removable receptacle assembly to receive refuse material therein. The vacuum power means includes a filter and motor assembly having a pair of vacuum motor members mounted on a motor head support assembly with the entire unit easily removable for maintenance purposes. The filter and motor assembly includes a filter assembly associated with each vacuum motor member to provide efficient filtration. The coin control means includes a time meter assembly to be actuated by a coin for a predetermined time period to energize the vacuum power means.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: July 19, 1977
    Inventor: Richard W. Livingston
  • Patent number: D245846
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: September 20, 1977
    Inventor: Richard W. Livingston