Patents by Inventor Werner E. Pfisterer

Werner E. Pfisterer 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: 5742949
    Abstract: A toilet seat lowering apparatus automatically lowers a toilet seat from an upright position to a lowered position. The apparatus has a base which can be fitted onto an existing toilet. A fluid-containing housing is attached to the base, and a piston is contained within the housing. A piston rod which extends upwardly through the top of the housing is coupled to an arm attached to the toilet seat by an adjustable connecting rod assembly. A conduit formed external to the housing allows fluid to flow between chambers within the housing in response to pressure differentials between the chambers. The rate of flow of fluid and the speed at which the seat is lowered by gravity can be adjusted by the user. The seat can also be quickly manually lifted or lowered.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: April 28, 1998
    Inventors: Emil Goldi, Werner E. Pfisterer