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
Micro-fluidic device
Onium salt-containing polymer
Signal processing and tiered signal encoding
Method of providing tailor-made software for hospital departments
Digital signal processing apparatus, liquid crystal display apparatus, digital signal processing method and computer program
Remote controller
Ion implantation method and ion implantation apparatus
  Randomly Featured Patents
Naphthyridine derivatives
Reactive tricalcium phosphate compositions
Pressure sensitive trip mechanism for a rotary breaker
Sample collection device
Electrically heated hose for heating melted adhesive and atomizing air fed to a spraying head
Method for inducing biological coverings in wounds
Voice signal blocker, talk assisting system using the same and musical instrument equipped with the same
Multi-layer desk
Method of making a limited-rotation motor with integral displacement transducer
Dynamic column redundancy driving circuit for synchronous semiconductor memory device