DEVICE FOR EXTRACTING SAMPLE OUT OF BOREHOLE Russian patent published in 2005 - IPC

FIELD: well research, particularly means for drilling rock sample out of borehole in an airtight manner.

SUBSTANCE: device comprises case and hollow drill arranged in the case and having ring-shaped cutter. Stopper closing cartridge for sample receiving is kinematically linked with the drill by means of transmission mechanism. Transmission mechanism is formed as rotary drum with curved cut made in side surface thereof, deflecting finger and rotary arm. Deflecting finger slides in curved cut and is fixedly secured to drill body. Rotary arm is connected with the drum by one end thereof and with stopper by another end. Rotary arm is connected with stopper by means of mechanical couple including rod with plug. The stopper is arranged in cartridge lid and is made as rotary cylinder. Formed in the cylinder is through channel sized in accordance with the sample to be drilled out. Cylinder is provided with annular gaskets connected one to another by linear members. The rotary arm has an axis of rotation connected to device case.

EFFECT: simplified structure, increased reliability.

3 dwg