Flexible, oscillating blade liquid pump
Patent 4063826 Issued on December 20, 1977. Estimated Expiration Date: 
December 20, 1994. 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.
December 20, 1994. 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 2152243 2406499 2646261 3408670 3765175 3822103 3865729 InventorApplicationNo. 05/688295 filed on 05/20/1976US Classes:417/410.1, Electric or magnetic motor417/436TRANSVERSELY MOVABLE IMPELLING MEMBER (E.G., PADDLE)ExaminersPrimary: Freeh, William L.Assistant: Ross, Thomas I. Attorney, Agent or FirmInternational ClassF04D 33/00 (20060101)Foreign Application Priority Data1975-05-20 DTAbstractA pump for conveying liquid, especially resonance pump, which comprises an alternating current operable oscillating armature which is supported by a leaf spring, and also comprises an elastically flexible thin-walled plate which is likewise supported by the leaf spring and extends into a pump passage through which liquid is conveyed within the pump. The pump furthermore includes electromagnets adapted when energized to cause the armature alternately to swing to one and the opposite side so that the leaf spring and the plate carry out synchronous movements in a direction transverse to the longitudinal axis of the pump. The plate has a considerably lower bending resistance than the leaf spring. | |
