Resources Contact Us Home
Rotary drill bit having filling opening for the installation of cylindrical bearings

Image Number 2 for United States Patent #6250407.

A rotary drill bit includes a rotary cutter rotatably mounted on a leg. A radial bearing arrangement and an axial bearing arrangement are provided in an interface between the cutter and the leg. The leg includes a filling opening for enabling cylindrical rolling elements of the radial bearing arrangement to be installed. The cutter includes a radial flange which radially overlaps the radial bearing arrangement to secure the cutter on the leg. The flange, which is disposed axially behind the radial bearing arrangement and axially in front of the filling opening, includes a recess for accommodating the passage of the cylindrical rolling elements. A locking element is disposed in the filling opening for preventing dislodgement of the cylindrical rolling elements. The locking element includes a lip which projects axially forwardly of the radial bearing arrangement. The lip is disposed radially inwardly of the flange and terminates axially behind the radial bearing arrangement.

  Recently Added Patents
Cabinet door with tread pattern
Surveillance apparatus and method for wireless mesh network
Liquid crystal display and manufacturing method thereof
Method for adjusting link speed and computer system using the same
Display unit and display method
Audit planning
  Randomly Featured Patents
Surface-modified base matrices
Semiconductor device, and method for manufacturing the same
Phase change memory word line driver
Optical guide for increasing printer image width
Air supply system
Control device for hairdresser cutting tool
System and method for capturing color images that extends the dynamic range of an image sensor using first and second groups of pixels
Secure computer system having privileged and unprivileged memories
Method of making a splinter-flocked fabric from a multifilament tow
Process for polyisocyanates