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US Patent 4719769 - One way clutch for dual action agitator
US Patent Issued on January 19, 1988
Estimated Patent Expiration Date:
April 7, 2006Estimated 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.
Estimated Patent Expiration Date:
April 7, 2006Estimated 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.AbstractA 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. | InventorsApplicationNo. 06/848935 filed on 04/07/1986US Classes:68/133, Bottom drive192/35, Pilot mechanism192/46, Positive74/126Oscillation or reciprocation to intermittent unidirectional motionExaminersPrimary: Coe, Philip R.Attorney, Agent or FirmUS Patent ReferencesRe12030, 70059, 628249, 1473564, 1960004, 1969368, 2129566, 3667307, 3678714, 3987508, Method of washing clothesIssued on: 10/26/1976 Inventor: Platt3987651, Combined oscillating and unidirectional agitator for automatic washer Issued on: 10/26/1976 Inventor: Platt3987652, Unidirectional agitation accessory for automatic washer Issued on: 10/26/1976 Inventor: Ruble4155228, One-way clutch for auger agitator Issued on: 05/22/1979 Inventor: Burgener, Jr. , et al.4164130, One-way clutch for double-acting agitator Issued on: 08/14/1979 Inventor: Hammer4452054, Agitator thruster for an automatic washer Issued on: 06/05/1984 Inventor: Hafstrom4520638Triple action agitator for automatic washers Issued on: 06/04/1985 Inventor: Brenner International ClassD06F 13/00 (20060101) |
