Carriage for traversing irregular surfaces

A carriage for traversing irregular surfaces such as downstairs or upstairs, comprising:

• a carriage frame, a pair of front wheels, and a pair of rear wheels,
• a pair of extendable handles for pushing the carriage, said handles being slidably disposed in a pair of handle receivers which are attached to said carriage frame,
• a pair of skids pivotally connected to a pair of skids and a pair of skid extensions, a lower end of each skid being pivotally connected to a respective rear wheel, an upper end of each skid being pivotally connected to one end of a respective skid extension, and an opposite end of each skid extension being pivotally connected to a lower end of a respective extendable handle for forming a C-shaped configuration when said skids and skid extensions are extended by extending the handles, and
• a brake member attached to said carriage frame for effectively stopping on a flat floor of the irregular surfaces, whereby the carriage can be effectively traversed over the irregular surfaces along the skids and by the extended handles, and, if necessary, the carriage can be effectively stopped on a flat floor of the irregular surfaces by the brake member.