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
Solar power system with communication network utilizing magnetic fields
Pyroelectric detector, pyroelectric detection device, and electronic instrument
Sublingual coated tablet of fentanyl
Magnetic disk and manufacturing method thereof
Data latch circuit and electronic device
Dynamic lookup service in a distributed system
JTAG multiplexer with clock/mode input, mode/clock input, and clock output
  Randomly Featured Patents
Three-sided puck light
Aqueous functional fluids with antioxidants
Triggerless release aids and laser-equipped pneumatic training aid for safe drawing of the bowstring
System and method of calibrating an image system and storage medium
Bag
Wagering game where player can borrow money for wagers based on equity position
Apparatus for transferring particles
Fuel cell stack
Heavy vehicle suspension with unitized narrow profile bolster beam hanger assembly and outboard spring mount
Battery failure compensation for a power supply used in an implantable defibrillator