| Patents for B23B 51 - Tools for drilling machines (12,490) |
|---|
| 01/19/1988 | US4719780 Tool point and its working method and tool for making and flanging a hole |
| 01/07/1988 | EP0251220A1 Drilling tool |
| 01/06/1988 | CN87204013U Circle-cutting cutter for metal plates |
| 01/05/1988 | CA1230994A1 Center free drill |
| 12/30/1987 | WO1987007857A1 Diamond drill for working hard brittle materials |
| 12/29/1987 | CA1230763A1 Combination bit and manufacturing technique for forming disc-shaped plugs |
| 12/17/1987 | DE3717592A1 Drilling tool with turn-over bits - has slotted shank for bit reception with bit clamped by screw in recessed and notched slot side wall |
| 12/16/1987 | EP0249104A1 Method of grinding a twist drill |
| 12/15/1987 | US4712952 Drill for generating of holes in a work piece |
| 12/15/1987 | US4712951 Tool for cutting annular groove |
| 12/15/1987 | US4712948 Ball end mill cutter |
| 12/12/1987 | CN86210893U Combined drilling and milling tool for milling and cutting taper hole |
| 12/10/1987 | DE3619334A1 Hollow drill bit crown |
| 12/09/1987 | EP0248775A1 Drill |
| 12/08/1987 | US4711609 Drill tool |
| 12/01/1987 | US4710072 Cone drill bit |
| 12/01/1987 | US4710070 Device in back spot facing tools |
| 12/01/1987 | CA1229751A1 Drill and disposable inserts therefore |
| 11/24/1987 | US4708541 Valve seat cutting tool |
| 11/19/1987 | EP0245604A2 Method for drilling deep holes in a work piece |
| 11/19/1987 | DE3616230A1 Drilling tool |
| 11/18/1987 | CN87103385A Borehole drill construction |
| 11/12/1987 | DE3629562C1 Drill for making a conical undercut in a predrilled cylindrical hole |
| 11/11/1987 | EP0244986A2 Borehole drill construction |
| 11/05/1987 | DE3601109A1 Multipurpose self-drilling anchor |
| 11/03/1987 | US4704055 Drill with cooling channel |
| 10/28/1987 | EP0242638A1 Boring tool |
| 10/27/1987 | US4701988 Relating to cutters |
| 10/21/1987 | EP0241794A1 Coupling of boring tools |
| 10/20/1987 | US4700789 Device to obtain ring-shaped cavities in the bottom of drilled holes made in any type of medium |
| 10/14/1987 | EP0240917A2 Drilling device for making holes with undercuttings |
| 10/14/1987 | EP0240765A2 Carbide twist drill provided with internal cooling canals |
| 10/14/1987 | EP0240759A2 Drilling tool with two or more cutting edges, provided with exchangeable cutting bits |
| 10/13/1987 | US4699550 Cranial perforator |
| 10/13/1987 | US4699549 Insert rotary cutter |
| 10/07/1987 | EP0240093A2 Drilling apparatus for drilling holes in glass sheets |
| 10/03/1987 | CN86202528U Automatically direction-changing safe drilling-tapping converter |
| 10/01/1987 | DE3610016A1 Step drill |
| 10/01/1987 | DE3608892A1 Tool for cutting out spot-welded areas |
| 09/23/1987 | EP0238477A2 Rotating chip cutting tool |
| 09/22/1987 | US4694710 Method of making a blank of a drill bit |
| 09/16/1987 | EP0237035A2 Method of and tool for thread mill drilling |
| 09/16/1987 | EP0236336A1 A changeable cooling control system for a turbine shroud and rotor. |
| 09/15/1987 | US4693646 Apparatus for lubricating a workpiece |
| 09/15/1987 | US4693644 Annular hole cutter |
| 09/15/1987 | US4693641 End mill with throw-away tip |
| 09/10/1987 | DE3608861A1 Drill |
| 09/09/1987 | EP0235342A1 Drilling tool |
| 09/08/1987 | US4692074 Tool coupling arrangement for a tooling assembly |
| 09/02/1987 | EP0234140A1 Cleaning device for anode holes used in the aluminium industry |
| 09/01/1987 | US4690595 De-burring tool for the de-burring of the edges of holes in curved or oblique surfaces of a work piece |
| 09/01/1987 | US4690594 Deburring apparatus |
| 08/25/1987 | US4688975 Quick change tool retainer |
| 08/25/1987 | US4688972 Twist drill |
| 08/20/1987 | DE3604507A1 Tool for making undercut drill holes |
| 08/19/1987 | EP0232750A1 Device for performing spot-facings, in particular at the non-accessible end of through-holes |
| 08/18/1987 | US4687388 Drill bit |
| 08/18/1987 | US4687387 Cutting tool |
| 08/13/1987 | DE3623657C1 Drilling tool for making undercuts in pilot drillholes |
| 08/13/1987 | DE3603681A1 Single-edged machine boring broach and reamer |
| 08/12/1987 | EP0231818A2 Countersinking tool for producing flat surfaces on both sides of a hole |
| 08/12/1987 | EP0231720A1 Apparatus for the obtention of annular cavities at the bottom of drills made on surfaces of any kind |
| 08/04/1987 | US4684298 Drill |
| 07/30/1987 | DE3602427A1 Tool for shaping by cutting |
| 07/28/1987 | US4682399 Method and tool for removing the nut which secures a faucet to a sink |
| 07/22/1987 | EP0229402A1 Facing cutter |
| 07/21/1987 | US4681174 Diamond crown bit |
| 07/14/1987 | US4679971 Drill bit of diamond or boron nitride |
| 07/08/1987 | EP0227682A1 Adjustable length chamfering tool |
| 07/02/1987 | DE3545586A1 Drilling tool |
| 06/30/1987 | US4676702 Drill with novel insert |
| 06/30/1987 | US4676701 Slug retainer |
| 06/23/1987 | US4674927 Telescoping nose piece |
| 06/09/1987 | US4671710 Drill bit |
| 06/03/1987 | EP0223909A1 Extrusion die for manufacturing a drill blank of hard metal or ceramics |
| 06/02/1987 | US4669931 Drill for generating a hole in a work piece |
| 06/02/1987 | US4669928 Hole saw mandrel |
| 05/27/1987 | EP0223474A2 Method of making a drill blank |
| 05/27/1987 | DE3541477A1 Device for making wall recesses |
| 05/26/1987 | US4668162 Changeable cooling control system for a turbine shroud and rotor |
| 05/26/1987 | US4667755 Air-cooled, dry drilling |
| 05/13/1987 | EP0221548A2 Cutting tool having concentrically arranged outside and inside abrasive grain layers and method for production thereof |
| 05/12/1987 | US4664567 Drill bit |
| 04/30/1987 | DE3538237A1 Trepanning bit |
| 04/28/1987 | US4660262 Forward and reverse milling cutter |
| 04/22/1987 | EP0218744A1 Device for making a cylindrical hole through a wall, in particular for masonry |
| 04/21/1987 | US4659264 Drill and indexable carbide insert therefor |
| 04/15/1987 | CN86203302U Slide proof device for removed iron core in holing pipeline |
| 04/07/1987 | US4655651 Drill bit for hand-held drilling machines |
| 04/07/1987 | US4655650 Self-cleaning high speed boring tool |
| 04/01/1987 | EP0216396A2 Drill bit |
| 04/01/1987 | EP0216064A1 Cutting bit |
| 03/26/1987 | WO1987001763A1 A changeable cooling control system for a turbine shroud and rotor |
| 03/26/1987 | DE3619245A1 Twist drill |
| 03/24/1987 | US4652185 Hole saws |
| 03/18/1987 | CN86203925U Movable clamper for boring |
| 03/18/1987 | CN85204182U Device and tool for drilling, expanding and reaming |
| 03/12/1987 | DE3532157A1 Drill-in device for pressurized steel pipelines |
| 03/10/1987 | US4648760 Drill and cutting insert therefor |
| 03/05/1987 | DE3530296A1 Device for making wall cutouts |