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
Electric discharge machining hole drilling
Data processor and scanner device
Mobile device case with storage compartment
Organic electroluminescent element
Solid-state imaging apparatus, method of manufacturing solid-state imaging apparatus, and electronic apparatus
Data modulation for groups of memory cells
Multilayered material sheet and process for its preparation
  Randomly Featured Patents
Latch assembly
Semiconductor integrated circuit device with copy-preventive function
Method and apparatus to process dedicated physical control channel (DPCCH) in a transmit antenna diversity (TXDIV) rake finger
Retinoic acid esters of steroids of the pregnane series, their use in the treatment of acne and pharmaceutical formulations useful therefor
Electronic circuit with repetitive patterns formed by shadow mask vapor deposition and a method of manufacturing an electronic circuit element
Use of fluorine-free fire fighting agents
Roof system and panel therefor
System and method for pooled electronic purchasing
Common database system for a communication system
Watch casing