Patents by Inventor Ewald Nelken

Ewald Nelken 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: 4425671
    Abstract: An electrical combustion toilet including a housing having a seat and a cover, a first receiving chamber for receiving toilet wastes, a combustion chamber situated below the first receiving chamber adapted to receive wastes therefrom by force of gravity and to electrically incinerate the wastes, an ash chamber for receiving combustion residue from the combustion chamber, and a fireproof cover adapted to seal the combustion chamber. The toilet is rendered firedamp-proof by an encapsulation structure and by being supplied with pressurized air for preventing explosive gas mixtures.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: January 17, 1984
    Inventor: Ewald Nelken
  • Patent number: 3934921
    Abstract: A buffer for spring-supported wheels and a method of producing the buffer are disclosed. The buffer, which is of an elastic material, can be clamped into an annular slot formed by a wheel-rim and a wheel center-disk. The contact elements which provide the electrical connection include a contact plate which covers the rivet head and is retained in a recess in the buffer.
    Type: Grant
    Filed: September 21, 1973
    Date of Patent: January 27, 1976
    Assignee: Fried. Krupp Huttenwerke AG
    Inventor: Ewald Nelken