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 and apparatus to determine impressions using distributed demographic information
Method for detecting directions of regularity in a two-dimensional image
Plant disease control composition and its use
System and method for selecting a video encoding format based on feedback data
Systems and methods for detailed error reporting in data storage systems
Non-aqueous electrolyte battery
Wireless communication power control
  Randomly Featured Patents
Proton-conducting membrane and the use of the same
Systems and methods that integrate radio frequency identification (RFID) technology with industrial controllers
Process for preparing toluenesulfinates
Fuel injector
Method and apparatus for reduction of the pressure in a liquid mixture
Control circuit for a welding device
Comparing the content of tables containing merged or split cells
Application of groupware to ISO 9000 registration via facilitated work sessions
Method and apparatus for presentation of calling subscriber number in mobile networks
Projection exposure apparatus and method