US Patent 7617663 Grass box discharge rear panel

An apparatus comprising a container assembly defined by a plurality of panels coupled to a frame assembly, the plurality of panels comprising at least one releasable panel releasably coupled to the frame assembly, the releasable panel adapted to release and provide separation from the frame assembly and a release assembly coupled to the releasable panel suitable for providing force adequate to release the releasable panel from the frame assembly, the release assembly further comprising a lever and a plurality of bracket members pivotally coupled to a panel of the container assembly. The container assembly and release assembly are suitable for attaching to a portion of a grass cutting device, containing material collecting from the grass cutting device and discharging the material without detachment of the container assembly from the grass cutting device.