Suction cleaners
Patent 4536908 Issued on August 27, 1985. Estimated Expiration Date: 
March 30, 2003. 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.
March 30, 2003. 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 References3803658 InventorAssigneeApplicationNo. 06/480360 filed on 03/30/1983US Classes:15/1.7, SUBMERGED CLEANERS WITH AMBIENT FLOW GUIDES180/8.1StepperExaminersPrimary: Roberts, Edward L.Attorney, Agent or FirmInternational ClassesE04H 4/16 (20060101)E04H 4/00 (20060101) Foreign Application Priority Data1982-04-02 ZAAbstractA suction cleaner for a swimming pool is supported on a bogie with inclined supporting feet resiliently biased. The bogie is rocked by means of a turbine through which water is pulled by suction to cause the bogie and hence the cleaner to move. To cause the cleaner to change direction another turbine intermittently drives a hose connection at the top of the cleaner in opposite directions with long periods of dwell in between.Field of SearchSUBMERGED CLEANERS WITH AMBIENT FLOW GUIDES | |
