Folding Leg Lift Mechanism
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
This leg mechanism can support an object, such as a CRT display head, at a desired height and altitude. The legs fold into a base element as they are moved to the retracted position, where they consume very little space. The basic element of the lift mechanism is a chain-like leg able to flex through a limited angle at two corners of each link. See Fig. 1. Flexing is limited in one direction so that the assembly forms a straight leg. Flexing is limited in the other direction so that the assembly assumes a radius R, as it flexes through a 90Œ bend. R is kept small so that the assembly takes up minimum vertical space in or beneath a display unit or similar device. Two legs must be used in opposition to provide horizontal stability, as shown in Fig. 2.