Patents by Inventor Robert F. Schwarzenbek

Robert F. Schwarzenbek 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).

  • Filter housing for accommodating a plurality of filter sizes
    Patent number: 8647405
    Abstract: A filter housing includes a duct having at least one registration flange and an access port sized to pass a plurality of seating rail assemblies. Each seating rail assembly is releasably engaged with the duct includes a seating flange. By locating the seating rail assembly at a particular distance from the registration flange, a channel of different sizes can be formed for receiving a filter having a corresponding dimension.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: February 11, 2014
    Inventors: Richard E. Gray, Jr., Robert F. Schwarzenbek
  • FILTER HOUSING FOR ACCOMMODATING A PLURALITY OF FILTER SIZES
    Publication number: 20130031884
    Abstract: A filter housing includes a duct having at least one registration flange and an access port sized to pass a plurality of seating rail assemblies. Each seating rail assembly is releasably engaged with the duct includes a seating flange. By locating the seating rail assembly at a particular distance from the registration flange, a channel of different sizes can be formed for receiving a filter having a corresponding dimension.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Inventors: Richard E. Gray, JR., Robert F. Schwarzenbek