Patent ID: 9655438
Date: 2017-05-23
CPC Classifications: A47B

Claim:
1. An ergonomic work station with upper and lower work platforms disposed one above the other and in which elevation of said upper and lower work platforms are individually adjustable, comprising: a base adapted to rest upon a floor; left and right telescoping pedestals extending vertically upward from left and right sides of said base, said lower work platform being supported on upper ends of said left and right pedestals; at least one rear telescoping pedestal extending vertically upward from a rearward portion of said base, said upper work platform being supported on an upper end of said at least one rear telescoping pedestal; said left, right and rear telescoping pedestals each including a motorized height adjustment mechanism therein for controllably positioning the respective work platforms respectively at desired heights above said base; a manually actuated control mechanism operatively coupled to the motorized height adjusting mechanisms of said left, right, and rear telescoping pedestals for manually controlling up and down motion of the respective motorized height adjusting mechanisms; position sensors within each of said left, right, and rear pedestals for sensing the elevation of the upper end of the respective pedestal and providing a respective output; logic and motor control circuitry having inputs connected to said manually actuated control mechanism and to the position sensors of said left, right, and rear telescoping pedestals, and outputs coupled to the motorized height adjusting mechanisms of the respective left right, and rear pedestals; the logic and motor control circuitry being operative to maintain the lower work platform level when the height of the lower work platform is being adjusted and to prevent the upper and lower work platforms from colliding by maintaining at least a predetermined minimum vertical distance between said upper and lower work platforms when said lower work platform is being raised and when said upper work platform is being lowered.