Patents by Inventor Jurgen Krejza

Jurgen Krejza 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: 4899782
    Abstract: A steam pressure cooker (1) is described, which is provided with a lid (2) and a pressure relief valve (8), comprising a valve seat (7a), a valve body (9) adapted to have a load applied thereto in the direction of the valve seat (7a) by means of a spring (11) and an adjustable spring abutment (12), which is adapted to be displaced from an operative position in which the valve body (9) is pressed onto the valve seat (7a) to a steam-discharge position in which the valve body (9) is relieved of the load to such an extent that the steam can escape and which, for the purpose of cleaning, can be removed from the lid (2) to such an extent that the pressure relief valve (8) is freely accessible.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: February 13, 1990
    Assignee: WMF Wurttembergische Metallwarenfabrik AG
    Inventors: Jurgen Krejza, Eberhard Roth, Sonja Bolek
  • Patent number: 4512495
    Abstract: The invention relates to a saucepan lid having a lid handle detachably secured thereto, particularly for a steam pressure cooker, including monitoring elements disposed within said lid handle. Means are provided for permitting said handle to be detached from said lid without technical difficulties and to be safely re-attached thereto. To this effect the lid and lid handle are provided with projections and engagement recesses at locations permitting them to be brought into mutual engagement for attaching the handle to the lid and to be readily released from such engagement for detaching the handle, at least one such projection forming a movable component of a locking closure means. In a preferred embodiment the locking closure means is designed as a snap-engagement locking means (FIG. 1).
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: April 23, 1985
    Assignee: Wurttembergische Metallwarenfabrik AG.
    Inventors: Ewald Bauer, Jurgen Krejza
  • Patent number: 4461452
    Abstract: This invention relates to a valve assembly for a pressure-cooker in accordance with the preamble of claim 1.
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: July 24, 1984
    Assignee: Wurttembergische Metallwarenfabrik
    Inventor: Jurgen Krejza