Patent ID: 8028417

Claim:
A razor blade holder for a flexible tube comprising: a frame adapted to be secured to the longitudinally extending planar sealed end of the flexible tube having a longitudinal axis, the frame having an attachment portion with a bottom and a top wherein said top of the attachment portion is attached to a tool portion having a tool holder adapted to receive a razor blade, wherein the attachment portion has a hole extending through the frame for secure attachment of the frame to the longitudinally extending planar sealed end of the flexible tube, wherein the attachment portion has a planar back side and a front side comprising a first curved rib area on a left side of said attachment portion and a second curved rib area on a right side of said attachment portion, wherein a plurality of ribs extend between said first and second curved rib areas on said front side, and wherein each of said first curved rib area and said second curved rib area comprises a rib with a first end proximate to said tool portion that extends down the front side of the attachment portion substantially past said hole and towards the bottom of the attachment portion and curves back up said front side substantially past said hole and toward the tool portion.