Patents by Inventor Heinz L. Grunewald

Heinz L. Grunewald 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: 4287730
    Abstract: A tumbler-style washing machine having a tubular elongated drum adapted to be rotatable about its horizontal axis is provided with bearing-support structure for suspending and driving the drum, including a plurality of pulley-driven endless chain loops which suspend the drum from overhead rocker beam members. The rocker beam members are adapted to rock a limited distance in a vertical plane, to compensate for variations encountered during operation of the machine, such as load change, chain stretch and drum level fluctuation, etc., and a plurality of piston-cylinder units serve as buffering means for the rocker beam members. The piston-cylinder units are preferably supplied with internal fluid pressure and may be variously interconnected with each other and with specific control means to achieve an automatic support-adjusting action during operation of the washing machine.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: September 8, 1981
    Assignee: Engelhardt & Forster
    Inventors: Heinz L. Grunewald, Jurgen Wellbrock
  • Patent number: 4285219
    Abstract: A method is provided, along with apparatus for practice of the method, wherein laundry, such as linen or the like, is treated, following a washing operation applied thereto, by applying centrifugal force to extract rinsing liquid from a saturated laundry batch and then applying to the exterior of the laundry batch a pressurized fluid flow as a further treatment step, which is withdrawn from the laundry work batch from a point generally within the batch whereby rinsing liquid is withdrawn in a direction countercurrent to the preceding centrifugal extraction step. A suction may be applied at a point within the batch to either establish or enhance the liquid extraction operation.The apparatus of the invention includes a perforated spin-drying drum within a housing such that a circumjacent space is defined between the drum and the housing, and a remotely located blower in conduit communication with the housing generates a pressurized flow to the circumjacent space.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: August 25, 1981
    Assignee: Engelhardt & Foster
    Inventor: Heinz L. Grunewald