Abstract: A drain-cleaning machine comprises a cable, a motor assembly, and a speed control assembly. The cable comprises a longitudinal axis. The motor assembly is configured to rotate the cable about the longitudinal axis of the cable. The motor assembly comprises a motor and a motor control device. The motor is configured to operate at an operating speed that may vary within a range of operating speeds. The motor is configured to produce a substantially constant torque while operating at varying operating speeds across the entire range of operating speeds. The motor is configured to be powered by DC power. The motor control device is configured to receive AC power from an AC power source, convert the AC power into DC power, and communicate the DC power to the motor. The speed control assembly is configured to vary the operating speed of the motor within the range of operating speeds.

Abstract: A drain-cleaning machine comprises a cable, a motor assembly, and a speed control assembly. The cable comprises a longitudinal axis. The motor assembly is configured to rotate the cable about the longitudinal axis of the cable. The motor assembly comprises a motor and a motor control device. The motor is configured to operate at an operating speed that may vary within a range of operating speeds. The motor is configured to produce a substantially constant torque while operating at varying operating speeds across the entire range of operating speeds. The motor is configured to be powered by DC power. The motor control device is configured to receive AC power from an AC power source, convert the AC power into DC power, and communicate the DC power to the motor. The speed control assembly is configured to vary the operating speed of the motor within the range of operating speeds.

Abstract: A drain-cleaning machine comprises a cable, a motor assembly, and a speed control assembly. The cable comprises a longitudinal axis. The motor assembly is configured to rotate the cable about the longitudinal axis of the cable. The motor assembly comprises a motor and a motor control device. The motor is configured to operate at an operating speed that may vary within a range of operating speeds. The motor is configured to produce a substantially constant torque while operating at varying operating speeds across the entire range of operating speeds. The motor is configured to be powered by DC power. The motor control device is configured to receive AC power from an AC power source, convert the AC power into DC power, and communicate the DC power to the motor. The speed control assembly is configured to vary the operating speed of the motor within the range of operating speeds.

Abstract: Disclosed herein is an improved rotary drain cleaning machine having an improved support structure that prevents walking of the machine when in use. The machine is supported upon two rear mounted wheels and a forward pedestal.

Abstract: Disclosed herein is an improved rotary drain cleaning machine having an improved support structure that prevents walking of the machine when in use. The machine is supported upon two rear mounted wheels and a forward pedestal.

Abstract: Disclosed herein is an improved rotary drain cleaning machine having an improved support structure that prevents walking of the machine when in use. The machine is supported upon two rear mounted wheels and a forward pedestal.

Abstract: A drain-cleaning machine comprises a cable, a motor assembly, and a speed control assembly. The cable comprises a longitudinal axis. The motor assembly is configured to rotate the cable about the longitudinal axis of the cable. The motor assembly comprises a motor and a motor control device. The motor is configured to operate at an operating speed that may vary within a range of operating speeds. The motor is configured to produce a substantially constant torque while operating at varying operating speeds across the entire range of operating speeds. The motor is configured to be powered by DC power. The motor control device is configured to receive AC power from an AC power source, convert the AC power into DC power, and communicate the DC power to the motor. The speed control assembly is configured to vary the operating speed of the motor within the range of operating speeds.

Abstract: The present invention relates to an improved coupling apparatus for tandemly connecting, by hand, separate lengths of a pipe cleaning cable, also referred to as a “snake,” to obtain a cable of extended length suitable for the length of pipe being cleaned.

Abstract: A belt driving pulley, as typically used in a belt driven, drum-type drain cleaning machine and/or any other belt driven machinery, is disclosed wherein slippage between the pulley and the motor drive shaft occurs if a predetermined resisting torque is applied to the pulley by the belt.

Abstract: A belt driving pulley, as typically used in a belt driven, drum-type drain cleaning machine and/or any other belt driven machinery, is disclosed wherein slippage between the pulley and the motor drive shaft occurs if a predetermined resisting torque is applied to the pulley by the belt.

Abstract: The present invention relates to an improved coupling apparatus for tandemly connecting, by hand, separate lengths of a pipe cleaning cable, also referred to as a “snake,” to obtain a cable of extended length suitable for the length of pipe being cleaned.

Abstract: A hydrostatic sewer cleaning machine for driving a cable and cleaning tool in from 6 inch to 30 inch diameter sewer lines. The sewer cleaning machine comprises a wheeled base having a baffled hydraulic fluid reservoir therebeneath and an inverted U-shaped operator's handle at its rearward end. A prime mover, a hydraulic pump and a hydraulic motor are mounted on the base. The primer mover drives the hydraulic pump which is connected to the reservoir. The hydraulic pump is connected to the hydraulic motor. The hydraulic pump has a control valve which controls the direction and the amount of flow of the hydraulic fluid to the hydraulic motor. The pump control valve is operated, via a cable, by a control lever mounted on the operator's handle. The pump also has a manual relief valve by which the static pressure in the system can be released. The hydraulic motor output is connected through a slip clutch to the cable which drives an appropriate remote cleaning tool.

Abstract: A coupler assembly having male and female coupler members, the female coupler member having at least one linear open ended slot therein adapted to receive a drive pin on the male coupler member, the female coupler member also having an annular opening angularly displaced with respect to the linear slot, the male coupler member also having a depressible locking pin adapted to be depressed by the female coupler member as the drive pin is inserted into the linear slot, the locking pin being positioned to enter the annular opening in the female coupler member when the projection reaches the inner end of the slot, thereby locking together the coupler members.