DROPPER Russian patent published in 2006 - IPC A01G25/02 

FIELD: agricultural engineering, in particular, equipment for watering farm crops by drop irrigation process.

SUBSTANCE: dropper has casing equipped with inlet and outlet openings, and membranes located within casing. Membranes are connected through kinematic connections. Upper membrane is spring-loaded. Casing is fitted with partition wall and filter. Overflow opening and spiral channel of rectangular section are provided in bottom part of partition wall, said overflow opening and spiral channel being joined with one another. Filter is made in the form of cylinder and is manufactured from elastic gas-expanded polyurethane plastic. Filter is located above overflow opening and channels. On membrane surface there are openings arranged in concentric circles. Upper and lower membranes are connected through flexible non-stretchable thread. Centrally of each membrane there is catcher for catching end of flexible non-stretchable thread. The latter is passed through filter and located within overflow opening.

EFFECT: increased efficiency in continuous operation and improved quality of irrigation.

3 cl, 3 dwg