Rotary drill bits
AF Zahradnik, EC Sullivan, RS Smith, DE Ruff… - US Patent …, 2009 - Google Patents
(57) ABSTRACT A shank configuration for rotary drill bits, is disclosed for positioning of the
shank in relation to the bit body. A tapered Surface or feature of the shank may be …
shank in relation to the bit body. A tapered Surface or feature of the shank may be …
Method of arc welding using dual serial opposed torches
Y Zhang, S Zhang - US Patent 5,990,446, 1999 - Google Patents
An improved method of arc welding uses a single power supply connected to opposed
welding torches placed on both sides of a workpiece. Each torch is connected to a different …
welding torches placed on both sides of a workpiece. Each torch is connected to a different …
Shank structure for rotary drill bits
AF Zahradnik, EC Sullivan, RS Smith, DE Ruff… - US Patent …, 2011 - Google Patents
A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to
a bit body. A tapered surface or feature of the shank may be configured and sized to …
a bit body. A tapered surface or feature of the shank may be configured and sized to …
Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
AF Zahradnik, EC Sullivan, RS Smith, DE Ruff… - US Patent …, 2009 - Google Patents
A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to
the bit body. A tapered surface or feature of the shank may be configured and sized to …
the bit body. A tapered surface or feature of the shank may be configured and sized to …
Method of controlling a plasma arc cutting torch
TF Oakley, JV Warren Jr - US Patent 5,893,986, 1999 - Google Patents
US5893986A - Method of controlling a plasma arc cutting torch - Google Patents US5893986A
- Method of controlling a plasma arc cutting torch - Google Patents Method of controlling a …
- Method of controlling a plasma arc cutting torch - Google Patents Method of controlling a …
Plasma arc spot welding of car body steels containing vaporizable ingredients
AK Oros, JC Chennat, Y Yamaguchi - US Patent 5,938,948, 1999 - Google Patents
Method of one side spot welding of a metallic auto body construction containing vaporizable
coatings or ingredients, the construction having overlapping metal plys, comprising …
coatings or ingredients, the construction having overlapping metal plys, comprising …
Arc welding control method and arc welding apparatus
J Fujiwara, A Kawamoto, A Nakagawa - US Patent 8,664,568, 2014 - Google Patents
US8664568B2 - Arc welding control method and arc welding apparatus - Google Patents
US8664568B2 - Arc welding control method and arc welding apparatus - Google Patents Arc …
US8664568B2 - Arc welding control method and arc welding apparatus - Google Patents Arc …
Methods of fabricating rotary drill bits
AF Zahradnik, EC Sullivan, RS Smith, DE Ruff… - US Patent …, 2009 - Google Patents
A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to
the bit body. A tapered surface or feature of the shank may be configured and sized to …
the bit body. A tapered surface or feature of the shank may be configured and sized to …
Method to control starting and stopping a plasma arc welding keyhole
JM Sanders, PM Ryan - US Patent 5,914,058, 1999 - Google Patents
An improved plasma arc welding arm method and apparatus for keyhole welding rotating
workpieces has an arcuate gear track supporting a corresponding arcuate geared cart …
workpieces has an arcuate gear track supporting a corresponding arcuate geared cart …
Method and apparatus for maintaining compression of the active area in an electrochemical cell
J Shiepe, G Hanlon - US Patent App. 10/740,077, 2005 - Google Patents
(57) ABSTRACT A unique electrically conductive pressure pad is employed in an
electrochemical cell Stack. The pressure pad includes integral mixture of electrically …
electrochemical cell Stack. The pressure pad includes integral mixture of electrically …