Patent ID: 7281607

Claim:
An elevating device for raising and lowering a platform, comprising: a. a first dovetail member having first and second mounting surfaces for mounting said device to an independent surface, and a contacting surface; b. a second dovetail member substantially aligned with said first dovetail member and having a base having a plurality of slots therein, first and second end portions, a first contacting surface that substantially engages said contacting surface of said first dovetail member, and a second contacting surface; c. a third dovetail member having said platform secured thereto, said third dovetail member being substantially aligned with said second dovetail member and having a base having a hole therein, first and second end portions, and a first contacting surface that substantially engages said second contacting surface of said second dovetail member, said hole being substantially aligned with said slots in said base of said second dovetail member; d. a pair of slide bars, each said slide bar positioned in a guide track formed by each of said end portions of said second dovetail member and secured thereto; and e. an elevating means sized to fit in said hole to engage said slots, said engagement being capable of moving said slide bars in said guide tracks to elevate said third dovetail member.