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
Toy ball
Method for producing a flexible composite elastomeric polyurethane skin
Memory component and memory device
Detection of code-based malware
Structural plasticity in spiking neural networks with symmetric dual of an electronic neuron
Linear jet ionizer
Methods for enhancing tantalum filament life in hot wire chemical vapor deposition processes
  Randomly Featured Patents
Methods for removal of impurity metals from gases using low metal zeolites
Magnetic head with magnetic metal film core having offset halves
Drive arrangement for activating a car safety device activation element
Mechanical set anchor with slips pocket
Improvements introduced into machines for breaking and stretching textile fibers
Personal watercraft
Sheet feeding mechanism for image forming apparatus
Process for dyeing paper with disazo dyes
Hybrid driving apparatus and vehicle provided with the same
Delay line null command generator test set for sarcalm