| Document |
Document Title |
|
8091459 |
A method for manufacturing a rotary tool for chip removing machining with at least one chip flute that extends in the longitudinal direction of the tool. The method involves preparing a mixture of a cemented carbide, cermet or ceramics p...
|
|
5904939 |
An apparatus for manufacturing a rod of hard metal or ceramic with at least one helical inner bore. A plasticized mass of hard metal or ceramic is simultaneously forced through a die and twisted. Either the mass is twisted uniformly over...
|
|
5780063 |
An extruder for extrusion manufacturing a rod of hard metal or ceramic with at least one helical inner bore. A plasticized mass of hard metal or ceramic is simultaneously forced through a die and twisted. Either the mass is twisted unifo...
|
|
5601857 |
An extruder for extrusion manufacturing one of a hard metal and a ceramic rod with at least one helical inner bore and having a smooth outer surface substantially free of elevations and depressions includes a housing and a die connected ...
|
|
5367836 |
An automatic drill loader is used with a drill grinding machine to automatically present drills to the drill grinding machine workhead for being ground thereat and to carry ground drills to a storage receptacle. The automatic drill loade...
|
|
5263286 |
A drill having a pair of cutting edges formed at one end of a shank and arranged symmetrically with respect to a point, each cutting edge comprising a central edge portion and an outer edge portion, the central and outer edge portions ea...
|
|
5201795 |
Method and apparatus for forming a base defining a trunnion and a portion of a leg for a roller-cone-type rock bit. A workpiece is rough formed to comprise leg work, having a preliminary end surface, and trunnion work extending angularly...
|
|
5182971 |
A hardmetal drill bit button is restored by forming its head to a chisel shape. Various chisel shapes and a machine for the purpose are disclosed. Also disclosed are various kinds of grinding wheels for the purpose, and a method and mean...
|
|
4887493 |
A rolling cutter (24) for a rotary drill bit (10) having cutting inserts or elements (52) mounted within sockets (54) in a so-called full shrink process. The rolling cutter (24) is heated to a temperature over around 500° F. in a contro...
|
|
4837983 |
A walking beam conveyor (54) delivers drill bits (B), one at a time, into a feed position. A pushrod (52) moves a drill bit (B) from the feed position into the nosepiece (36) of a robot arm (28). The drill bit (B) enters the nosepiece (3...
|
|
4779440 |
An extruded drill blank which has uniform pitch of grooves or lands on the circumference thereof and flushing bores of uniform diameter. A tool and process for producing the extruded drill blank comprises heating a hard metal or ceramic ...
|
|
4412462 |
The disclosure describes a core drill adjusting tool formed of a base plate of a predetermined size and thickness with a plurality of recesses of different diameters for testing a core drill and a frustum affixed thereto over which the c...
|
|
4380295 |
Drills (35), vertically oriented in a row/column array in a drill block (31), are moved in the column direction across a slot (49) located at a loading station (41). As the drills in each partially or fully occupied row reach the slot an...
|
|
4164878 |
A dressing apparatus for drill bits such as employed in well drilling operations including a horizontally reciprocating hammer having a die mounted on the end thereof which is relatively narrow in relation to the face of the drilling bit...
|
|
3828480 |
A machine for sharpening drills, especially twist drills, in which a pair grinding discs are mounted in adjacent relation and rotate on respective axes which are parallel and offset so the discs define a re-entrant grinding throat. A dri...
|
|
3538793 |
|
|
3495670 |
|
|
3488886 |
|
|
RE24093 |
|
|
RE16522 |
|
|
D119179 |
|
|
1510727 |
|
|
1317049 |
|
|
1302685 |
|
|
1287865 |
|
|
1287855 |
|
|
1254816 |
|
|
1254753 |
|
|
1252562 |
|
|
1246750 |
|
|
1241693 |
|
|
1221555 |
|
|
1211483 |
|
|
1210293 |
|
|
1203723 |
|
|
1185259 |
|
|
1184137 |
|
|
1181741 |
|
|
1148065 |
|
|
1148055 |
|
|
1138354 |
|
|
1129417 |
|
|
1123350 |
|
|
1118372 |
|
|
1110428 |
|
|
1097565 |
|
|
1090848 |
|
|
1089907 |
|
|
1071488 |
|
|
1061179 |
|
