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
Layout of memory strap cell
Method for storing data, computer program product, ID token and computer system
Method and apparatus for the transmission of data via a bus network using the broadcast principle
Communication method
Radio base station and communication control method
Estrogen receptor modulators and uses thereof
Image generating apparatus, program, medium, and method for controlling a tilt angle of a virtual camera
  Randomly Featured Patents
Fuel cell power plant
Smart direct memory access controller
Method of evaluating a laser used in ophthalmological surgery
Method and apparatus for a gauge for indicating a pressure of a fluid
Compositions and methods relating to drug discovery and detection and treatment of gastrointestinal diseases
Semiconductor integrated circuit chip
Basket-style carrier with non-collapsing end panels
Stressed MOS device
E911 call blocking for non-initialized wireless telephones
High-frequency signal branching device