System based on inductive coupling for sensing loads in a washin

Details System based on inductive coupling for sensing loads in a washin System based on inductive coupling for sensing loads in a washin

1995-06-19

1996-10-08

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

68 1227, 73779, D06F 3302

Patent

active

055619916

ABSTRACT:
A system for sensing loads in a washing machine by measuring angular acceleration is provided. The washing machine includes a washer basket and an agitator that can be angularly accelerated about a spin axis during a predetermined dry spin cycle. The system includes a magnetic source, such as a permanent magnet, positioned in the agitator for producing a predetermined magnetic field. A magnetic sensor, made-up of inductive coils or solid state sensors, is positioned to be electromagnetically coupled to the magnetic source for supplying an output signal that varies in a predetermined manner as the agitator is angularly accelerated relative to the magnetic sensor. A signal processor is coupled to the magnetic sensor for receiving the output signal supplied by the magnetic sensor. The processor is designed and/or programmed for measuring loads in the washer basket based on the output signal received from the magnetic sensor while the agitator is angularly accelerated relative to the magnetic sensor upon initiating the dry spin cycle.

REFERENCES:
patent: 3422957 (1969-01-01), Fosler
patent: 5161393 (1992-11-01), Payne et al.
patent: 5208931 (1993-05-01), Williams et al.
(GE Attorney Docket No. RD-23902) entitled "Energy Efficient Washer With Inertia Based Method for Determining Load", by Badami et al., Ser. No. 08/406,424, filed Mar. 20, 1995.

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