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
Boundary acoustic wave device
Control device with adjusting pulse width modulation function and the backlight module thereof
Hair care composition
Method and arrangement for controlling semiconductor component
Authentication platform and related method of operation
Terminal device, system and computer readable medium
Activated carbon cryogels and related methods
  Randomly Featured Patents
Engine block die-casting apparatus having mechanically actuated bank core slides
Method for the manufacture of a light-weight sheet
Electronically controlled speed limiting system for turf care machine
Camera assembly using mandrel to roll film in chamber
Hammer protective system
Camera navigation in a gaming environment
Computer device display system using conditionally asynchronous memory accessing by video display controller
Surgical device front handle
Catalytic asymmetric epoxidation
Acoustic telemetry system and method for monitoring a rejection reaction of a transplanted organ