Class / Patent application number | Description | Number of patent applications / Date published |
047002000 | FROST PREVENTING | 9 |
20090077872 | System and Apparatus for Preventing Freezing of Crops - A system for preventing freezing of crops within a volume includes a plurality of RF radiators configured to radiate RF energy into the volume. A height, a spacing, an output power, a vertical beam angle, a vertical beam width, and a horizontal beam width of each one of the plurality of RF radiators is selected to result in an average RF power density taken about three dimensions within the volume sufficient to prevent freezing of a substantial portion of the crops, and also to result in a peak-to-peak variation of RF power density taken about two dimensions in a horizontal plane within the volume and at heights below a predetermined height to be less than a predetermined percentage of an average RF power density taken about the two dimensions. | 03-26-2009 |
20090205248 | Frost Guard and Method of Use Thereof - A frost guard that is light weight, transparent and easily compacted facilitating storage and transport. The frost guard has an inverted U-shaped frame and a transparent, flexible plastic sheet over the frame, wherein the sheet protects plants under the frost guard from excessive wind and moisture, thereby preventing frost damage to the plants. The frame is placed over the plants to be protected, such that only slight air flow occurs through C-shaped apertures in the plastic sheet. | 08-20-2009 |
20110247263 | CONTROL METHOD AND APPARATUS OF WIND MACHINE FOR PLANT FROST PROTECTION - This invention relates to control method and apparatus of wind machine for plant frost protection, and belongs to the domain of agro-meteorological disaster monitoring and control. Existing wind machines for plant frost protection only rely on critical damage temperature or wind speed as a condition to start. If there is no thermal inversion, operation of the wind machine will aggravate freezing injury to plants. If the strength of thermal inversion is weak, the effect will be minimal The feature of this invention is that when temperature at the plant canopy is lower than the critical damage temperature of a certain plant and temperature difference between the top and bottom of the thermal inversion layers exceeds set threshold, wind machine will start automatically. Otherwise it will remain off. The control apparatus mainly consists of sensor | 10-13-2011 |
20110247264 | TRELLIS SYSTEM FOR FOR IRRIGATION AND FROST PREVENTION - A trellis mounted system for irrigation and frost prevention is described. The irrigation system comprises a trellis, a first conduit coupled to the trellis, and a second conduit coupled to the trellis. The first conduit delivers a heated water stream to a nozzle that provides a heated water spray to an area surrounding the trellis. The second conduit provides drip irrigation to a ground area surrounding the trellis. The heated water supplied by the trellis mounted irrigation system prevents the development of damaging frost on agricultural plants. | 10-13-2011 |
20110289833 | PROTECTIVE COLD FRAME FOR PLANTS - Disclosed herein is a plant-protecting device which is commonly known as a protective cold frame. While this description seems to indicate a frame-like device, the described device is intended to refer not only to the frame but also to a wind and thermal protective covering generally configured to hold heat therein to protect a plant therein from cold, wind, and the combination. In general, the disclosed device comprises a plurality of rod members that may be bendable, which are inserted into a coupler at the apex of the dome-shaped frame to provide a support structure for a cylindrical covering to be placed thereupon. | 12-01-2011 |
20130160357 | HEATED SPRAY SYSTEM FOR FROST PROTECTION - A heated spray system for frost protection and prevent is described. Heated water, such as groundwater, is delivered through a spray system to the area surrounding the irrigated crops, thus increasing the temperature near the crops and preventing frost damage. The crops are protected from excessive irrigation with the addition of protective covers and a drainage system. When spraying groundwater for temperature control, the covers and drainage system prevent the water from reaching the roots of the crops, and thus prevent the groundwater from damaging the roots due to contaminants and pollutants in the groundwater. | 06-27-2013 |
20140208641 | UPPER AIR INFLOW-TYPE APPARATUS FOR DISSIPATING COLD AIR - Provided is an upper air inflow-type apparatus for dissipating cold air, the apparatus including: an air inflow fan; an air guiding tube arranged at a lower portion of the air inflow fan; and a descending current divergence zone arranged at a lower portion of the air guiding tube. | 07-31-2014 |
20140338258 | THERMAL PLANT TREATMENT AND A MACHINE TO APPLY THE TREATMENT - The invention relates to a method of impacting the fruit production of a plant or crop by applying short-duration thermal shock streams of hot air to the plant periodically to impact the flavonoid biosynthetic pathway mechanisms in a plant thereby improving its fruit. The method includes the steps of (1) passing by the plant in a row at a speed of 1-5 mph in an improved Thermal Plant Treatment (TPT) machine, (2) ejecting from the TPT machine at least one hot stream of air in the direction of the unit plant area for no more than 15 seconds per unit plant area per pass, (3) optionally measuring the thermal shock profile that the plant is subjected with thermal sensors, and (4) repeating the thermal shock profile treatment steps (1) and (2) at pre-determined regular intervals over at least a fraction of the crop year. | 11-20-2014 |
20150068114 | Control of ground surface radiative effects - Here invented is method and apparatus for control of ground surface radiative effects. A material is laid out in a field in anticipation of frost or in expectation of crop damage from powdery mildew. The material causes radiative heat loss to the cold night sky due to its low emissivity and it causes ultraviolet-C in natural sunlight to be directed upward to impinge on mildew spores on vegetation where it would be otherwise shaded from the sun. | 03-12-2015 |