SAMPLER OF BOTTOMSET BEDS Russian patent published in 1994 - IPC

FIELD: ground sampling. SUBSTANCE: sampler has body in form of cylindrical sleeve. Sleeve lower part accommodates end piece with axial channel and piston with rod. Sleeve has support in form of horizontal ring. Sampler also has posts with cross bars, rod locking mechanism, branch pipe located concentrically in body. Body has limiting ring on its outer surface. Nose has outer annular recess and axial channel. Axial channel diameter is equal to branch pipe inner diameter. Rod is connected by means of its locking mechanism with shackle. Rod is hollow with radial holes. Rod hollow accommodates check valve. Piston and rod are located in branch pipe and form sampler chamber together with body. Sampler chamber is hydraulically communicated with outer space through rod radial holes and its check valve. Support is made with plate spring-loaded to support. Support is installed for horizontal motion and locking of nose. Nose is locked in its outer annular recess. Plate closes nose axial channel in upper position of nose. Besides, support bottom has annular projections. Sampler has plates installed on cross bars along sampler axis. Branch pipe is made of plastic materials with smallest sorbing of radionuclides. EFFECT: higher reliability of sampler operation due to increased representation of sample contaminated with radionuclides. 4 cl, 3 dwg