JP2775420B

• Main Author: SAITO KYOSHI
• Format: Patent
• Language: English
• Published: 16.07.1998
• Edition: 6
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; FIXED CONSTRUCTIONS; FORESTRY; FOUNDATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HUNTING; HYDRAULIC ENGINEERING; NEW BREEDS OF ANIMALS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; SOIL SHIFTING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRAPPING

PROBLEM TO BE SOLVED: To effectively execute washing and cultivating work for cutting out various kinds of algae growing thick on the rock at the bottom of the sea, and scratching the rock. SOLUTION: A number of iron balls (c) big enough not to drop from meshes of a net bag (gap), are accommodated in the net bag body A composed of a bottom wall part 1 and a side wall part 2 formed by connecting a number of reinforcing rod rings for connection (a) and a number of beating and cutting rings (b). The reinforcing rings for connection (a) are obtained by working a reinforcing rod of which the whole periphery is smooth, to be circular, the beating and cutting rings (b) are integrally formed into a flat oval ring of which the whole peripheral surface is smooth, by two straight long side parts opposite to each other, and two curved short side parts, and one of the straight long side parts is wider than the other, and the striking edges of the length almost same as the width of the wider straight long side part, are arranged at predetermined intervals.