PURPOSE: To provide the subject apparatus having plural cavities separated from each other with walls, furnished with an opening to enable the going in and out of crabs and having a diameter and depth sufficient for holding a crab, effective for preventing the loss of crabs caused by the devouring one another and facilitating the catch of crabs.
CONSTITUTION: Plural cavities 2 are formed in a state passing from an end face to the opposite end face of a concrete block 1 having a cubic form or plural cut vinyl chloride pipes 3 are collected and bonded with each other in the form of a triangular column to use the inner cavity 4 of the vinyl chloride pipe 3 as a space for holding a crab, a net 5 is bonded to an opening end at the other side of the pipe 3 and a string 6 is connected to the apex of the triangular column opposite to the net 5. The objective crab-breeding apparatus produced by this method has at least two cavities separated from each other by walls and each having an opening to enable the going in and out of the crab and having a diameter and depth sufficient to hold a crab in the space. The loss of crab caused by the devouring one another can be prevented and the catch of the crab can be facilitated by this structure.
| WO/2014/092068 | METHOD FOR PRODUCING MATERIAL FOR FEEDSTUFF ADDITIVE |
| JP2004113105 | COVER FOR FLOAT AND FLOAT ASSEMBLY USING THE SAME |
SUZUKI KUNIHIRO
NAGAI YASUTOYO
| JPS54130392A | 1979-10-09 | |||
| JPS6149931A | 1986-03-12 | |||
| JPH029769A | 1990-01-12 | |||
| JPS4867088A | 1973-09-13 |