Importance

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Abstract

A washing and extracting machine includes a programmable controller for controlling a variable speed drive to control and vary the speed and direction of a rotating laundry cylinder containing a load of materials to be laundered. The cylinder is first loaded and then driven to rotate in a predetermined manner during a washing phase, followed by a rinsing phase and is then accelerated to a relatively high speed for extracting liquid from the laundered materials in an extracting phase. The laundry cylinder is accelerated and/or decelerated in accordance with a changeable, predefined acceleration/deceleration profile so that the laundry materials are movable radially and circumferentially in the cylinder in a controlled manner substantially eliminating unbalanced loading of the cylinder and contents during the washing, rinsing and extracting phases, thus eliminating the need for costly and complex shock mounting systems for supporting the rotating cylinder.

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First Claim