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A folding utility cart for a providing a movable work platform which may be raised and lowered without the use of tools. The cart employs an upper support member that is spaced apart from a lower support member by a pair of cross braces. A biasing spring helps raise the upper support member into an

A folding utility cart for a providing a movable work platform which may be raised and lowered without the use of tools. The cart employs an upper support member that is spaced apart from a lower support member by a pair of cross braces. A biasing spring helps raise the upper support member into an elevated position, and a releasable lock secures the upper support member into the elevated position. A lock release disengages the upper support member from the elevated position. The cart also has a handle, support feet, and wheels, allowing use in a conventional manner.

대표청구항 ▼

[ What is claimed is:] [1.] A foldable utility cart comprising:an upper support member comprising a substantially-rectangular frame defined by a first beam spaced apart from a second beam by a plurality of cross bars; a first track disposed within said first beam and sized to accept an end of a firs

[ What is claimed is:] [1.] A foldable utility cart comprising:an upper support member comprising a substantially-rectangular frame defined by a first beam spaced apart from a second beam by a plurality of cross bars; a first track disposed within said first beam and sized to accept an end of a first cross brace support; and a second track disposed within said second beam and sized to accept an end of a second cross brace support;a lower support member comprising a substantially-rectangular frame defined by a first beam spaced apart from a second beam by a plurality of cross bars; a first slot disposed within said first beam and sized to receive an end of a first cross brace support; and a second slot disposed within said second beam and sized to accept an end of a second cross brace support;a positioning means for adjustably positioning said upper support member in an elevated position above said lower support member, said positioning means including a first cross brace support having a first arm pivotally attached to a second arm; said first arm having a pinned end pinned to said lower support member, and a free end disposed within said first track; said first arm free end having a roller sized to operatively communicate with said first track; said first arm free end having a locking post extending orthogonally therefrom; said second arm having a pinned end pinned to said upper support member, and a free end disposed within said first slot; a second cross brace support having a first arm pivotally attached to a second arm; said first arm having a pinned end pinned to said lower support member, and a free end disposed within said second track; said first arm free end having a roller sized to operatively communicate with said second track; said first arm free end including a spring attachment bracket; said second arm having a pinned end pinned to said upper support member, and a free end disposed within said second slot, each of said cross brace supports extending between said upper and lower support members;biasing means for helping raise said upper support into an elevated position;locking means for securing said upper support member in said elevated position; andrelease means for unlocking said upper support means from said elevated position.