Resources Contact Us Home
Gauge face inlay for bit hardfacing

Image Number 2 for United States Patent #5904212.

Steel bodies are manufactured in a production process that employs polystyrene patterns in a lost foam casting process. The patterns are machined to permit the formation of complex shapes that cannot be reproduced in simple patterns that are extractable from reusable, two-piece pattern molds or dies. Bit patterns formed in the process have forward canted blades that are machined from mating planar surfaces to simplify the machining process. The edges of the forward canted blades form a spiral surface for mounting cutter elements. The forward canting makes the blades stronger and thus permits the blades to be thinner than non-canted blades to increase the clearance between blades, which improves the movement of the cuttings past the bit. Recesses are machined into the gauge face of the patterns to produce a recess in the casting for receiving hardfacing. The hardfacing in the recess forms a layer that cooperates with the surrounding blade material to form a smooth transition area as the bit wears during usage.

  Recently Added Patents
Group greeting card
Small molecule inhibitors of kynurenine-3-monooxygenase
Electronic device, communication control method of electronic device, and information terminal device
Display screen with graphical user interface
Debris tray
Control device with adjusting pulse width modulation function and the backlight module thereof
Resuming piecewise calibration of a real-time-clock unit after a measured offset that begins at the next calibration period
  Randomly Featured Patents
Container having a self-locking lid
Write enabling circuitry for a semiconductor memory
Rotary head cleaning device
Thermally stable electro-optic device and method
Method and apparatus for compensating waveforms, spectra, and profiles derived therefrom for effects of drift
Process for the preparation of an unsupported, solid olefin polymerisation catalyst and use in polymerisation of olefins
Load balancing device
Protective device working in a contact free manner
Biaxially oriented polyester film for use in floppy disc
Pitless connection incorporating pressure relief valve