Patent ID: 7891038

Claim:
A drain cleaning machine ( 10 ) comprising: a) a supporting frame ( 11 ), b) an electric motor ( 12 ) affixed to said supporting frame, said motor including a projecting drive shaft from which power may be extracted, c) a cable containing enclosure ( 14 ), supported upon said supporting frame ( 11 ), for rotation about an axis of rotation, said enclosure ( 14 ) having axially spaced front and rear portions, said front portion having an opening therethrough, d) a drain cleaning cable ( 38 ) coiled within said enclosure ( 14 ) about said axis of rotation, said cable ( 38 ) including an operating end ( 48 ) for extending through said opening and into a drain to be cleaned, e) a pair of axially opposed support wheels ( 25 A, 25 B) rotatingly attached to the rear portion of said supporting frame, said wheels comprising: 1) a wheel hub ( 56 ), 2) a tire mounting rim ( 32 ) circumscribing said wheel hub, 3) a wheel disc ( 34 ) extending radially from said wheel hub to the inside surface of said tire mounting rim ( 32 ), 4) a solid elastomeric tire ( 40 ) circumscribing and affixed to said tire mounting rim ( 32 ), said tire ( 40 ) comprising an elastomeric material having a specific Shore Durometer hardness between 70 and 80, f) a support pedestal ( 42 ) affixed to the forward portion of said support frame ( 11 ), and g) an elastomeric ( 44 ) shoe affixed to the bottom of said pedestal ( 42 ) for contact with a supporting surface, wherein said shoe ( 44 ) comprises a substantially flat, rectangular bottom surface sized and shaped to engage an underlying surface, said shoe ( 44 ) comprising an elastomeric material having a specific Shore Durometer hardness between 70 and 80.