A sewer cleaning machine including a rotatable drum, a cable positioned at least partially within the drum, the cable configured to be extended from and retracted into the drum along a cable axis, a motor coupled to the drum, the motor operable to rotate the drum, and a cable feed mechanism including a plurality of bearings arranged concentrically around the cable, the plurality of bearings configured to selectively engage the cable to feed the cable in a first linear direction along the cable axis, a cam ring including a plurality of cam surfaces, each of the plurality of cam surfaces engageable with a corresponding one of the plurality of bearings, and a handle configured to rotate the cam ring about the cable axis to move the plurality of cam surfaces into engagement with the first plurality of bearings.

The invention is directed to a stair-climbing remote control utility wagon. The wagon provides a forward chassis arm and a rear chassis arm which are interleaved with each other, providing a broad, stable base. The forward chassis arm terminates in a forward chassis, and the rear chassis arm terminates in a rear chassis. The forward chassis and the rear chassis provide powerful, battery-powered electric motors and caterpillar tracks. The forward chassis arm and rear chassis arm are fully articulated by servomotors, providing telescoping segments which may be extended and retracted with servomotors, and the motor housing of the forward chassis arm further provides infrared sensors, which are controlled by a microprocessor to enable the wagon to climb a flight of stairs. The forward chassis arm and rear chassis arm may also be used to elevate the bed of the wagon to any height, up to 48 inches.

A flat furniture dolly for moving furniture, building and garden materials, and other objects too heavy to be readily moved by human effort alone, which includes a platform for supporting the load, two rows of fixed wheels to allow free movement across flat ground and to allow the traversal of small obstacles such as small steps and broken concrete, and a rope attached to one end of the platform to provide additional control when crossing irregular surfaces.

A flat furniture dolly for moving furniture, building and garden materials, and other objects too heavy to be readily moved by human effort alone, which includes a platform for supporting the load, two rows of fixed wheels to allow free movement across flat ground and to allow the traversal of small obstacles such as small steps and broken concrete, and a rope attached to one end of the platform to provide additional control when crossing irregular surfaces.

When a vehicle body is on board an escalator, a control device makes an ejection determination by use of an external sensor. The control device makes an ejection determination by use of front-wheel rotation sensors. The control device makes an ejection determination by use of an inclination detecting unit. The control device switches a control mode from a boarding control mode to an ejection control mode, when at least one of the above three ejection determinations is affirmatively made.

A specialized dolly is provided that works with a hydraulic floor jack; together the assembly performs the lifting and moving of vehicles with ease and efficiency. The configuration and design of the dolly enables a standard hydraulic floor jack to be positioned within a frame of the dolly in a stationary position. A handle of a hydraulic floor jack can then be used to maneuver the combination dolly/floor jack assembly with ease on the floor of the repair shop. The dolly may be designed and configured to have stationary low resistance front rear wheel assemblies, both of which provide for convenient maneuvering and steering. The dolly's wheel tracks (distance between front wheels) and its wheelbase length (distance between front and rear wheels) allows the dolly to be stable and significantly maneuverable, especially over or around potholes, slopes, and ramps, and also provides greater safety for the operating technician.

A motorized device for transporting a human or inanimate payload. A platform is configured to accommodate the payload and a pair of wheel clusters are mounted to the platform at opposite ends thereof and are powered in both rotation and in translation relative to the platform, for example by one or more electric motors housed in or on the platform or wheel clusters. Each of the wheel clusters comprises an arm, and a first and a second wheel rotatably mounted to respective opposite ends of the arm. Each of the wheels is independently powered about its respective axis of rotation. An electronic controller commands the motors to enable stable rolling movement of the device over a surface with only one wheel of each cluster in contact with the surface, and to allow the device to steer and to ascend and descend steps.

A drive assembly is provided and includes a rotatable housing, a motor disposed within and to rotate with the housing, the motor including a drive element and first and second drive shafts, which are independently rotatably drivable by the drive element, a first drivable element coupled to the first drive shaft such that rotation thereof is transmitted to the first drivable element and configured to propel the housing in a first direction during first drive shaft rotation and a second drivable element coupled to the second drive shaft such that rotation thereof is transmitted to the second drivable element and configured to propel the motor in a second direction, which is transversely oriented relative to the first direction, relative to the housing during second drive shaft rotation.

A drive assembly is provided and includes a rotatable housing, a motor disposed within and to rotate with the housing, the motor including a drive element and first and second drive shafts, which are independently rotatably drivable by the drive element, a first drivable element coupled to the first drive shaft such that rotation thereof is transmitted to the first drivable element and configured to propel the housing in a first direction during first drive shaft rotation and a second drivable element coupled to the second drive shaft such that rotation thereof is transmitted to the second drivable element and configured to propel the motor in a second direction, which is transversely oriented relative to the first direction, relative to the housing during second drive shaft rotation.

A step board is attached to a main body in a rotatable manner. The step board is biased toward the upper side due to a tensile force of a spring while taking a position at which the step board is attached to the main body as an axis, and an attachment angle thereof is so fixed by a stopper as to fall within a predetermined angle. On the lower side of the step board, a cylinder unit covering a side surface of the bar-like main body is provided. The cylinder unit is connected to a brake shoe. Accordingly, when the step board is stepped on, the cylinder unit is moved downward so that the brake shoe makes contact with part of a rear wheel, thereby limiting a rotational velocity of the rear wheel.