Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Non-disruptive configuration of a virtualization controller in a data storage system
Patient programmer with automated MRI compatibility verification for active implantable medical device
Alkaline battery
Method and apparatus for sensing an input object relative to a sensing region of an ultrasound sensor device
Stabilized redispersible polymer powder compositions
Network attachment for IMS systems for legacy CS UE with home node B access
Upper surface of a skateboard deck
  Randomly Featured Patents
Automatic title or description captioning for a VCR recording
Method for fluorodecarboxylation
Molded surface of a concrete product
Gaming device having a weighted probability for selecting a bonus game
Method of employing surgical suturing apparatus to tie knots
Gap filler for bed
Junction between wires employing oxide superconductors and joining method therefor
Polyether having heterofunctional groups at both ends, process for the preparation thereof and polymerization initiator therefor
Refresh control circuit of pseudo SRAM
Dissolution liquid for drug in iontophoresis