Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method and apparatus for decoding/encoding a video signal with inter-view reference picture list construction
Method for treating oncological diseases
Package for product
Method for delivering a volatile material
Systems and methods for unchoked control of gas turbine fuel gas control valves
Activated carbon cryogels and related methods
Fluorescent proteins
  Randomly Featured Patents
Testing circuit for charge detection circuit, LSI, image sensor, and testing method for the charge detection circuit
D.C. chopper control device for electric motors
Chest mounted carrier shelf
Preservation of blood platelets with citrate
Food serving tray
Refrigeration heat pump and auxiliary heating apparatus control system with switchover during low outdoor temperature
Method for manufacturing a semiconductor device having more than two conductive layers
Denaturing separation matrix having hydroxyethyl cellulose for nucleic acid electrophoresis
Method and apparatus for making an orthodontic appliance
Method for measuring surface profile, and apparatus using the same