๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Prospects of development and uses of pneumatic drills in construction

โœ Scribed by A. D. Kostylev; K. S. Gurkov; V. A. Grigorashchenko; G. N. Ratskevich


Publisher
Springer
Year
1985
Tongue
English
Weight
550 KB
Volume
21
Category
Article
ISSN
1573-8736

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Development and validation of a model fo
โœ Philip W. Johnson; William C. Lyons ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 964 KB

The pneumatic turbine-powered drilling engine (PTDE) is a unique tool for directional drilling when using air or gas as the drilling fluid. The engine consists of a pneumatic turbine motor coupled to the bit by a four-stage planetary gear transmission and a thrust-bearing assembly, and is supported