Patents by Inventor Richard P. Schuld

Richard P. Schuld 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).

  • Evaporative element for a humidifier and method of making the same
    Patent number: 5374381
    Abstract: An evaporative element or cartridge especially useful in humidifiers comprises a plurality of stacked slit and expanded wicking paper layers, and means for supporting the wicking paper. The supporting means may comprise a layer of slit and expanded metal sandwiched in between the stacked wicking paper layers. The stacked wicking paper and metal layers are held together with an adhesive. Alternatively, the supporting means may comprise a rigid frame on the side edges of the stacked wicking paper layers, the frame having prongs engaging the wicking paper layers. Each layer of stacked wicking paper is staggered with respect to adjoining layers. The wicking paper has superior capillary rise of 79 to 112 mm/min.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: December 20, 1994
    Assignee: RPS Products, Inc.
    Inventors: Richard P. Schuld, Daniel E. Schuld