Patents by Inventor Heinz Treffinger, executor

Heinz Treffinger, executor 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: 5010235
    Abstract: An electric cooker consisting of a fitting plate having an opening surrounded by an upwardly directed rim, a cooker plate received in the opening, the plate having a cooking surface on which a cooking vessel can be placed, and a sheet metal ring surrounding the cooker plate and projecting beyond the cooker plate. The sheet metal ring has an internal section which rests against the cooker plate and an external section which extends downwards at a particular low incidence and engages beyond the upwardly-directed rim of the fitting plate. The sheet metal ring is shaped and arranged on the electric cooker plate so that the transition from fitting plate to cooking surface allows cooking vessels to be pushed smoothly from the cooking surface on to the fitting plate, and vice versa. This is achieved by having a minimal elevation of the cooking surface over the fitting plate and/or by inter-adapted bevelling of the cooker plate, the sheet metal ring and the fitting plate.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: April 23, 1991
    Assignee: E.G.O. Elektro-Gerate Blanc u. Fischer
    Inventors: Karl Fischer, deceased, Gerhard Borst, executor, Heinz Treffinger, executor, Dorothee Fischer, executrix