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

One way clutch for dual action agitator

Patent 4719769 Issued on January 19, 1988. Estimated Expiration Date: Icon_subject April 7, 2006. 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

Re12030

70059

628249

1473564

1960004

1969368

2129566

3667307

3678714

Method of washing clothes
Patent #: 3987508
Issued on: 10/26/1976
Inventor: Platt

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Inventors

Application

No. 06/848935 filed on 04/07/1986

US Classes:

68/133, Bottom drive192/35, Pilot mechanism192/46, Positive74/126Oscillation or reciprocation to intermittent unidirectional motion

Examiners

Primary: Coe, Philip R.

Attorney, Agent or Firm

International Class

D06F 13/00 (20060101)

Abstract

A dual action agitator for use in a washing machine utilizes a one-way dog clutch having a plurality of dogs made of elastomeric material and pivotally mounted in a cam. The dogs pivot outward to engage an inner surface of an upper agitator barrel to drive the agitator barrel in a first direction during a first oscillatory stroke of a lower agitator skirt, and the dogs pivot away from the inner surface as the lower agitator skirt oscillates in a second opposite direction resulting in unidirectional movement of the agitator barrel to impart additional mechanical motion to a wash load and promote rollover.

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