Donnell L Robinson

US Patent:

20060278573, Dec 14, 2006

Filed:

Jun 14, 2005

Appl. No.:

11/153486

Inventors:

Donnell Robinson - Oakland CA, US

International Classification:

B01D 25/00

US Classification:

210460000, 210162000, 210163000, 052012000, 052016000

Abstract:

A drainage box is provided for use in protecting gutter drainpipes from clogging. An exemplary embodiment of the drainage includes a drainpipe portion for removably inserting into a drainpipe, and a filter attached to the drainpipe portion, wherein the filter has at least three plane sides. The filter includes a plurality of the apertures in at least one of the sides for allowing liquid to pass-through the at least one side of the filter and down the drainpipe portion, while filtering debris including leaves. In further embodiments, the filter is made of a nonmetal material and optional includes a plurality of fins on at least one of the sides that protrude from a surface of the filter for spacing debris away from the apertures, thereby reducing the chance that the apertures become clogged.

US Patent:

20070205144, Sep 6, 2007

Filed:

Mar 1, 2006

Appl. No.:

11/365909

Inventors:

Donnell Robinson - Oakland CA, US

International Classification:

E04D 13/04

US Classification:

210163000

Abstract:

A rooftop drainage device is provided for use in protecting rooftop drainpipes from clogging. An exemplary embodiment of the drainage device includes a filter comprising at least three sides, wherein at least one of the sides includes plurality of the apertures for allowing liquid to pass-through the at least one side into the drainpipe, while filtering debris; and an object receptacle mounted to a top of the filter for removably retaining an object, wherein a weight of the object holds the rooftop drainage device on the rooftop and over the drainpipe without need for mechanical fasteners.