FIELD: public services, chemical industry, metallurgy; cleaning of pipelines from sediments. SUBSTANCE: device has cup-shaped housing of working pneumatic chamber, movable head and rod with fitted-on piston installed along axis. Movable head is hollow, with stepped bore in space at side of working chamber. Rod has longitudinal channel which opens before piston to form return chamber between step of head, rod and piston. Return chamber communicates with working pneumatic chamber through throttling channel. Circular step is made on end of head at side of working chamber. This step movably and hermetically closes the working chamber mating by its outer part with inner part of working chamber skirt. EFFECT: enlarged operating capabilities. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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| PNEUMATIC SOURCE OF SEISMIC SIGNALS FOR WATER BODIES | 0 |
|
SU1078377A1 |
