Patent ID: 8132765
Filing Date: 2012-03-13
Classification: F16M,Y10S

Abstract:
1. A collapsible lockable support frame assembly pivotally connected to a stand with at least one pivot shaft and biasable relative to said stand between a non-operative horizontal position and an operative vertical position, comprising: a support frame, said support frame comprising two sliding rails arranged in parallel at two opposite lateral sides thereof; a slide holder coupled to and movable along said sliding rails of said support frame, said slide holder carrying a positioning member at a back side thereof; and a locking mechanism, said locking mechanism comprising a casing affixed to said support frame, an upper stop member and a lower stop member, said upper stop member having pivot connection means disposed at a top side thereof and pivotally swingingly connected to said casing, said lower stop member having pivot connection means disposed at a top side thereof and pivotally connected to said casing below an elevation of said upper stop member; wherein when said support frame is rotated from said operative vertical position to said non-operative horizontal position, said upper stop member and said lower stop member are forced by gravity thereof to turn out of said casing so that said upper stop member stops said positioning member from outward displacement to lock said slide holder and said positioning member is limited by said lower stop member to prohibit said slide holder from an inward displacement.