Ground water level control system
Patent 4227266 Issued on October 14, 1980. Estimated Expiration Date: 
November 20, 1998. 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.
November 20, 1998. 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 ReferencesInventorAssigneeApplicationNo. 05/962343 filed on 11/20/1978US Classes:4/496, Accessory137/362, Floor installation4/506, Construction details405/37, Control means responsive to sensed condition52/169.5, With drain or vent exterior to foundation perimeter52/169.7Open top, embedded container, tank, or reservoirExaminersPrimary: Levy, Stuart S.International ClassesE04H 4/00 (20060101)E04H 4/12 (20060101) AbstractA system for controlling ground water level in a particular surrounding area is disclosed. In particular, a dewatering system to safeguard the integrity of an in-ground swimming pool against damage or disruption caused by excess water accumulating at or near the soil surrounding the swimming is described. Such contiguous ground water, when it rises to an undesirably high level, for example, such as at a level higher than the level of water in a swimming pool, as a consequence of the resulting hydrostatic pressure, will cause adverse effects. The invention provides a system for the removal of ground water accumulating in a given area in excess of a predetermined level, such as around a swimming pool, until the desired level is restored. | |
