| 摘要 |
A lift device for adjusting the angular position of a worksurface such as a desk top lying thereon includes a glide sheet (103) upon which the edges of hinged fulcrum plates (100) rest. Protruding pivot pins (120) abut against the edges of the plates and are moved in curved guide slots (131) by means of a lift mechanism (1). The mechanism includes scissors arms (110) which move in accordion-like fashion by operating a lever arm (145). A translation bar (150) interconnects the scissors arms and the lever arm (145). A locking mechanism (160) actuable by pressure-release of a handle (142) may be provided to latch the lever arm in the desired position. The mechanism may be conveniently contained in a housing (9), to provide a drop-in assembly (5) for installation in a desk top or worksurface support system. As an alternative to the manually-operated lever arm, an electric motor (180) may be provided to actuate the scissors arms (110).
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