SAMPLER OF BOTTOM SOIL Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: invention can be used to take undisturbed sample of large section in loose bottom deposits. Sampler has tetrahedral core barrel 1 with shaped grooves 3 and flexible core-cutting plates 2 mounted in them attached to cover 4 which is coupled to plunger 6 linked to core barrel. Cylinder is provided with piston 8 placed in case 9 coaxially relative to cylinder. Space 10 under piston is filled with working fluid and communicates by means of holes 11 with space of cylinder. Space above piston communicates with hydrosphere. Case and cylinder are coupled with the aid of cords to release. With implantation into soil cover 4 with flexible plates 2 is lifted upwards and does not prevent filling of core barrel 1. With lifting of sampler working fluid is driven out of case 9 into cylinder 6, pushes plunger 5 and cover 4 which closes core barrel from above and flexible plates 2 cut sample from below at same moment. EFFECT: simplified design, improved operational reliability. 2 dwg