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
Xylitol-based anti-mucosal compositions and related methods and compositions
Uplink interference mitigation method and apparatus
Cooking device and method of manufacture of the same
Interaction analysis and prioritization of mobile content
Electronic device with a screen
Semiconductor memory device, test circuit, and test operation method thereof
Apparatus for transmitting and receiving data in a wireless communication system and method thereof
  Randomly Featured Patents
Golf club head
Tool comprised of a silicon nitride sintered body
Electro-optical device and driving having an improved electrode and driving arrangement
Telephone handset cradle/base
Double-ram striker assembly
Vehicle traction control system
Fruit snack
Process for reducing total sulfur content of claus off-gases
Tip for correction fluid applicator
Steering apparatus