Patents by Inventor William P. Ritzau

William P. Ritzau 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: 4494270
    Abstract: An improved wand for connecting a vacuum cleaner and power nozzle is disclosed. The wand includes a sheath, an upper wand assembly received in the sheath and detachably connected to the vacuum cleaner hose handle, and a lower wand assembly received in the sheath and releasably connected therein to the upper wand assembly. A resilient plug body is provided for attachment to the hose handle to be connected to the cord of the sheath. The plug body contains at least two electrical connectors separated by a slit to provide a limited degree of flexibility in the plug body to insure a good connection despite any possible minor misaligment with the opposing connectors on the cord. The upper end of the lower wand assembly has a leaf spring with a button on its underside protruding through a hole in the lower wand assembly to engage a similar hole in the upper wand assembly.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: January 22, 1985
    Assignee: Electrolux Corporation
    Inventors: William P. Ritzau, Aveo J. Casselli, Gene S. Fleischer
  • Patent number: 4185976
    Abstract: In accordance with the present invention, there is provided a reusable dust bag which may be used in an enclosed-bag type of vacuum cleaner interchangeably with a disposable paper dust bag.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: January 29, 1980
    Assignee: Consolidated Foods Corporation
    Inventors: John Kosik, William P. Ritzau
  • Patent number: 4079965
    Abstract: In accordance with the present invention, there is provided an improved wand for connecting a vacuum cleaner suction nozzle having an electric motor therein to a suction hose. A wand of this type normally serves as both a rigid handle for manipulating the nozzle and as a conduit for the passage of air from the nozzle to the hose. In addition, the present wand is provided with a sheath of preferably electrical insulating material for retaining an electric cord for supplying current to the motor in the nozzle from conductors carried by the suction hose.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: March 21, 1978
    Assignee: Consolidated Foods Corporation
    Inventors: John J. Moughty, John T. Ferraris, William P. Ritzau, J. Fred Collins