Abstract: The set of foldable rods (or pipes) can be used for shower or window curtains. Most of the existing curtains are attached to one long fixed rod through many contacting devices, causing lots of friction and potential damages to the system and also to the human body. The new foldable system is composed of many shorter rods or pipes. Each rod or pipe is slightly smaller in diameter to fit into the previous section (rod or pipe). One hook (for window curtain) or two hooks (for shower curtain) are attached to each section (rod or pipe). There is only one wheel connecting the original long rod (fixed to the wall). So the friction between the foldable rods and the original long rod is minimized (but more wheels can be attached to the multiple pipes). One end of the rods is attached to the long fixed original rod through a clinching device. The other end of the rods is attached to the single wheel.

Abstract: The main body of the luggage bag has a special tilted shape that puts more weight at the top instead of at the bottom of the luggage bag. There are two sets of wheels. The first set of wheels is at the bottom of the luggage bag. The second set of wheels has a spring, screws or fixed positions attached to adjust the height. This second set of wheels can be foldable (into a box), or detachable from the luggage, and be attached to any existing traditional luggage bag. There is an “L” shape lever as part of the handle to release the stress of the human arm while dragging the luggage bag. The wheels can be connected and powered by electrical sources or batteries.