System and apparatus for automatically feeding plants
Patent 4148155 Issued on April 10, 1979. Estimated Expiration Date: 
July 29, 1997. 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.
July 29, 1997. 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. 05/820342 filed on 07/29/1977US Classes:47/59R, WATER CULTURE, APPARATUS OR METHOD119/77, Barometric137/454, With shut-off between supply tank and receiver222/528, Closure type47/79IrrigatorExaminersPrimary: Bagwill, Robert E.Attorney, Agent or FirmInternational ClassesA01G 27/02 (20060101)A01G 27/00 (20060101) A01G 31/02 (20060101) AbstractA system and apparatus for growing plants in a nutrient solution while supported in an inert medium contained in a pot container includes a nutrient solution reservoir and automatic feeder apparatus for maintaining a predetermined level of nutrient solution in the container including a tube member connected to the reservoir having an open end carried a predetermined distance above the container bottom for dispensing the solution. An air vent communicates with the tube member allowing air to enter the reservoir in response to the level of nutrient solution in the container falling below the open end of the tube member as the solution is drawn by capillary action through the media into the roots. The nutrient solution flows into the container until the open end of the feeder tube is covered so as to continuously maintain the level of nutrient solution. An overflow opening drains excess liquid from the pot preventing overwatering and stagnation when used outdoors. | |
