U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method of washing clothes

Patent 3987508 Issued on October 26, 1976. Estimated Expiration Date: Icon_subject October 26, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1704932

1834936

1923580

2021097

2253989

2331897

2502702

2734367

3117434

3285040

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Inventor

Application

No. 577884 filed on 05/15/1975

US Classes:

8/159Agitating immersed material and liquid

Examiners

Primary: Coe, Philip R.

International Class

D06F 13/00 (20060101)

Abstract

Improved method for operating an automatic clothes washing machine of the type in which an agitator is oscillated by means of a drive mechanism to secure agitation of the clothes. The present invention provides a method wherein the clothes are immersed in a receptacle containing a washing liquid, the clothes are subjected to agitation with scrubbing action in a lower portion of the receptacle by means of the aforementioned agitator under conditions sufficient to force the clothes radially outwardly toward the perimeter of the receptacle, upwardly toward the top of the receptacle and then radially inwardly. The clothes are intermittently forced downwardly by an augering action which directs the clothes to the zone of agitation with scrubbing action. The clothes are thus subjected to numerous rollover cycles in passing through the washing liquid, thereby ensuring positive washing action.

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