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
Adding value to a rendered document
Methods circuits apparatuses and systems for facilitating access to online content
Encoding method, decoding method, encoding device, decoding device, program, and recording medium
Systems and methods for online search recirculation and query categorization
Method of transmitting data using spatial multiplexing
Secure service for enabling communication for calling party when communication service for called party is suspended
  Randomly Featured Patents
Adjustable power unit mounting attachment for vehicle
Shower head with improved water discharge
Bandage composition containing a phage associated lytic enzyme
Hydrokinetic generator
Durable percussion pad effective against noise, silent percussion instrument, silent percussion instrument set and electronic percussion system
Corrugated pallet
Analytical method and apparatus
Communications system and associated deskewing and word framing methods
Wafer pedestal with a purge ring
Engine blade containment shroud using quartz fiber composite