Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Earth boring system










Image Number 16 for United States Patent #7293615.

An earth boring apparatus for sinking shafts and removing shaft material from the shaft, the apparatus having at least two decks; hydraulic means for allowing movement of the decks relative to one another; releasable anchoring means associated with the decks for engaging walls of the shaft to secure the apparatus in a stationary position; whereby the releasable anchoring means of one of the decks engages the wall while the releasable anchoring means of the other deck is released from the wall to allow motion of the other deck along the shaft, in cooperation with the hydraulic means. The apparatus also includes guide means for forcing a bucket for hoisting shaft material from the shaft along a predetermined path, and an in-stage cut-boom drill.








 
 
  Recently Added Patents
Methods of forming semiconductor devices having diffusion regions of reduced width
X-ray imaging
Method and apparatus for representing sensory effects and computer readable recording medium storing user sensory preference metadata
Quantifying the risks of applications for mobile devices
Dynamic facsimile transcoding in a unified messaging platform
Power semiconductor module
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
  Randomly Featured Patents
OLED lighting fixture
1-glycidyl-3,3-dinitroazetidine containing explosive moiety and preparation method thereof
Method for transmitting a data stream from a producer to a plurality of viewers
Method for the preparation of a fermented milk product
Liquid injection recording apparatus including recording liquid circulation control
Cigarette package with spacer
Abdominal support garment
Method of forming thin film by chemical vapor deposition
Device for automatically opening and closing cash container
Memory interface and method of interfacing between functional entities