Abstract: An energy-recycling scissors lift includes a platform, base and a pair of scissors linkages, each having a first and second scissors legs. One end of each second scissors leg is pivotally attached to the base and the other end translations along the platform. One end of each first scissors leg is pivotally attached to the platform and the other end translates along the base. A bridge structure connects each of the second scissors legs together. A sealed gas cylinder, attached to the base and the bridge structure, moves the platform to an extended position above the base. Energy is stored in the sealed gas cylinder as the platform and supported object descends to a retracted position. A compensating device is attached to the scissors lift to compensate for the overforce caused by the sealed gas cylinder. One form of the compensating device adjusts the position of the sealed gas cylinder to vary the force exerted on the platform. Other compensating devices are equalizing springs and spring reels.

Abstract: A scissors mechanism supports a platform, and is coupled to a sealed gas cylinder or other energy-storage device in such a way that the cylinder tends to lift the platform, and an article on the platform--such as a television set, a bar, office equipment, a tabletop, etc. The lift may be enclosed in a compact cabinet so that the article on the platform is concealed when down, and accessible when up.Energy released in lowering the article is stored in compression of gas within the storage device, and subsequently reused in raising the article. Compensation is provided for the strongly varying mechanical advantage provided by the scissors mechanism, so that the stored energy can operate smoothly on the article throughout the entire operating range of the scissors, making possible the use of the energy-recycling system.