A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A drain snake (4) with a ball (8, 42) on a forward end of a cable (6), the ball having a convex leading surface (36) with a protrusion (10, 44) designed to act as a foot that steps over the end (22, 30) of a pipe (24) in an elbow (26) as the snake is rotated (32). In an embodiment, the protrusion may terminate laterally at 60-150% of a maximum lateral extent (R, 37) of the ball or the protrusion may be limited to the lateral extent of the ball. The protrusion may form a rotationally asymmetric surface arrangement on the ball. The protrusion may have a forward cutting edge (48, 53) and may have a lateral cutting edge (52). The cable (6) may be designed to flex laterally while remaining substantially inelastic axially under manual feed and retraction forces.
A drain snake (4) with a ball (8, 42) on a forward end of a cable (6), the ball having a convex leading surface (36) with a protrusion (10, 44) designed to act as a foot that steps over the end (22, 30) of a pipe (24) in an elbow (26) as the snake is rotated (32). In an embodiment, the protrusion may terminate laterally at 60-150% of a maximum lateral extent (R, 37) of the ball or the protrusion may be limited to the lateral extent of the ball. The protrusion may form a rotationally asymmetric surface arrangement on the ball. The protrusion may have a forward cutting edge (48, 53) and may have a lateral cutting edge (52). The cable (6) may be designed to flex laterally while remaining substantially inelastic axially under manual feed and retraction forces.
Drain cleaning device
PENNY JACK DANIEL (author)
2017-05-02
Patent
Electronic Resource
English