Resources Contact Us Home
Shaft drilling machine

Image Number 3 for United States Patent #4483403.

A shaft drilling machine has a circularly moving drilling head. The drilling head is angularly oriented with respect to the longitudinal axis of the shaft sought to be drilled. Loosened material is transported from the lower portion of the shaft by pickup means, moving with the drilling head, and taken to the upper portion of the angularly oriented bottom of the shaft, whereupon the loosened material or borings slide, by gravity, to a centrally located vertical conveyor mechanism for final removal of the material or borings from the shaft.

  Recently Added Patents
Conversion of 5-(chloromethyl)-2-furaldehyde into 5-methyl-2-furoic acid and derivatives thereof
Display screen or portion thereof with animated graphical user interface
Multi-radio coexistence
Electronic device
Sterilizable film for aseptic packaging
Vehicle battery with cell balancing current paths and method of charging the same
Retransmission control method, base station and mobile station
  Randomly Featured Patents
Reducing radius slide feature
Motor vehicle lighting system having at least two bend lighting driving lights
Wide-range laminar flowmeter
Liquid crystal compositions, polymer networks derived therefrom and process for making the same
Outgoing call handling system and method
Apparatus for producing porous preforms for optical fibers
Multi-chip packages providing reduced signal skew and related methods of operation
Apparatus for crushing material
Uniform heat treatment process for hardening steel