QUEEN BOWL Russian patent published in 1994 - IPC

FIELD: bee-keeping. SUBSTANCE: case of queen bowl is made in lower part in form of a cylinder, and in top part in form of a cone. Walls of the case are inclined one to another at angle of 110-120 deg.. Internal diameter of cross-section of cylindrical part of the case relates to its external diameter as 0,82 ≅ d₁/d₂≅ 0,93. Length l₁ of setting element of the case relates to height l₂ of external part of the case as 0,97 ≅ l₁/l₂≅ 1,3 when these values relate to height l₃ of cylindrical part of the case as 2,2 ≅ (l₁+l₂)/l₃≅ 3,2. Height l₃ relates to diameter d₁ as 0,54≅ l₃/d₁≅ 0,75. EFFECT: improved harvest of queen milk. 2 dwg, 1 tbl