Self-cleaning birdbath apparatus
Patent 4630569 Issued on December 23, 1986. Estimated Expiration Date: 
May 2, 2005. 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.
May 2, 2005. 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 ReferencesInventorApplicationNo. 06/729979 filed on 05/02/1985US Classes:119/69.5, BIRDBATH119/74, Fountains and troughs239/204Elevating means responsive to flow of spray fluidExaminersPrimary: Swiatek, Robert P.Attorney, Agent or FirmInternational ClassA01K 45/00 (20060101)AbstractA birdbath assembly is disclosed for controlled, automatic filling, self-cleaning and emptying with water pressure. The assembly includes a spray nozzle mounted for sliding movement through the inside surface of a bowl in response to water pressure. A series of solenoid operated fluid valves are sequentially opened by a preset electrical timing control to provide low water flow to fill the bowl, a subsequent greater water flow to raise the nozzle, agitate the water and any effluents in the bowl, and remove/expel the water and effluents from the bowl, followed by further low water flow to refill the bowl for reuse. A kit for converting conventional birdbaths to the present self-cleaning and filling invention is also disclosed. | |
