Patents Assigned to Roof Accessories, Inc.
  • Patent number: 5051175
    Abstract: The invention includes a drain guard and drain protection system. The drain guard includes a cross-sectionally L-shaped frame having a base and an upstanding sidewall extending therefrom. The upstanding sidewall has a plurality of spaced openings. The base may also have a plurality of spaced openings in communication with the plurality of spaced upstanding sidewall openings positioned relative thereto. The frame is of substantially greater perimeter than the perimeter of the enclosed drain opening. The drain protection system includes a surface layer having ballast spread therealong, a drain opening extending through the surface layer, a portion of the surface layer cleared of ballast, the portion outwardly extending from the drain opening to a drain guard of the above-described type.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: September 24, 1991
    Assignee: Roof Accessories, Inc.
    Inventors: Thomas W. Walczak, Robert M. Bennette