| Patents for B23B 51 - Tools for drilling machines (12,490) |
|---|
| 09/07/1989 | DE3805657A1 Drilling tool with interchangeable conveying helix |
| 09/06/1989 | EP0330945A1 Boring or reaming tool |
| 08/30/1989 | EP0330112A1 Drilling or reaming tool |
| 08/30/1989 | EP0330107A1 Boring or reaming tool |
| 08/29/1989 | US4861673 Composite sintered material having sandwich structure |
| 08/24/1989 | DE3820485C1 Helical flutes in drill bit - incorporates straight sloping sides and circular rounded floor portion |
| 08/22/1989 | US4859123 Insert boring tool |
| 08/15/1989 | US4856944 Coupling between a tool head and a tool support |
| 08/10/1989 | DE3802421A1 Drilling device for making drill holes with an undercut |
| 08/08/1989 | US4854789 Cutting tool assembly |
| 08/08/1989 | US4854788 Drill |
| 08/02/1989 | EP0325733A2 Drilling device for making holes with undercuttings |
| 08/02/1989 | CN2041986U Complex multi-edge reaming bit |
| 08/01/1989 | US4852670 Drilling tool with an exchangeable feed helix |
| 08/01/1989 | US4852196 Combination drill and screwdriver |
| 07/26/1989 | EP0325108A2 Material-working tools and method for lubricating |
| 07/19/1989 | CN1033954A Drilling bit with big angle of cutting edge |
| 07/18/1989 | US4849300 Tool in the form of a compound body and method of producing the same |
| 07/12/1989 | CN2040826U Hard alloy hollow drill |
| 07/11/1989 | CA1257113A1 Installation drill |
| 07/05/1989 | CN2040415U Mechanical holder of boring |
| 07/04/1989 | US4844670 Cutter for the deburring of bores |
| 07/04/1989 | US4844669 Insert boring tool and cutting insert therefor |
| 07/04/1989 | US4844643 Boring and milling tool and indexable cutter bit insert for use therein |
| 07/04/1989 | US4844322 Method for replacing a section of tubing |
| 07/04/1989 | US4843766 Cutting tool having concentrically arranged outside and inside abrasive grain layers and method for production thereof |
| 06/28/1989 | EP0321673A2 Drill |
| 06/27/1989 | US4842451 Deburring drill bit |
| 06/21/1989 | EP0321395A2 Coupling device for a tubular cutter for working concrete and stone |
| 06/21/1989 | EP0320881A2 Twist drill |
| 06/14/1989 | EP0319748A1 Precision drill |
| 06/14/1989 | CN2039239U Combined deep-hole drill |
| 06/13/1989 | US4838742 Method and apparatus for making an undercut drilled hole in a fixed base |
| 06/13/1989 | US4838136 Rotary tool for outer working of rotation-symmetrical workpieces |
| 06/01/1989 | DE3802290C1 Drilling tool for drilling holes in solid metal material, in particular for drilling holes in plate stacks |
| 05/30/1989 | US4833930 Method of sampling steel material and a device therefor |
| 05/24/1989 | EP0316552A2 Device for machining bolt holes or valve holes into a wheel disc or a rim of a motor vehicle wheel |
| 05/24/1989 | CN2038041U Soldering lug type hard alloy carpenter's auger |
| 05/18/1989 | DE3738000A1 Drilling tool |
| 05/17/1989 | EP0315643A1 Self-centering drill bit with pilot tip. |
| 05/16/1989 | US4830548 Method and apparatus for cutting |
| 05/16/1989 | US4830000 Surgical drill |
| 05/10/1989 | EP0315277A1 Method and apparatus for testing underground concrete pipes |
| 05/10/1989 | EP0315123A2 Drilling tool |
| 05/10/1989 | CN2037278U Dual blade rotary centre flat-inlaid compound bit |
| 05/03/1989 | DE3735859A1 Method for making fixing holes or valve holes in a disc or a rim of a wheel of a motor vehicle |
| 05/02/1989 | US4826368 Twist drill |
| 05/02/1989 | US4826367 Cutting tool assembly |
| 05/02/1989 | US4826366 Cutting tool |
| 05/02/1989 | US4826365 Material-working tools and method for lubricating |
| 05/02/1989 | US4826364 One-piece rotary material removing tool of sintered hard metal |
| 04/26/1989 | EP0313237A1 Annular hole cutter |
| 04/26/1989 | EP0312819A1 Method of machining bolt-holes and valve holes into a wheel-disk or a rim of a motor vehicle wheel |
| 04/26/1989 | CN1032582A Method and apparatus for replacing section of tubing |
| 04/19/1989 | EP0311748A2 Method for replacing a section of tubing |
| 04/19/1989 | EP0236336B1 A changeable cooling control system for a turbine shroud and rotor |
| 04/19/1989 | CN2036077U Twist drill for deep hole |
| 04/13/1989 | DE3733298A1 Multi-purpose tool |
| 04/05/1989 | CN1032131A Masonry drill tip with strong and chamfered cutting edges |
| 04/04/1989 | US4818157 Use with a chuck of an electric drill |
| 04/04/1989 | US4817742 Butterfly-type shim having perforations in mid-section thereof and double sandwich braze joint produced therewith |
| 04/04/1989 | US4817341 Cutting tool having concentrically arranged outside and inside abrasive grain layers and method for production thereof |
| 03/30/1989 | DE3730377A1 Cutting tool |
| 03/29/1989 | CN2034884U Multi-position turning tool storage for driller |
| 03/28/1989 | US4815904 Drilling assembly for making boreholes with undercuts |
| 03/28/1989 | US4815902 Piloting, drilling, countersinking, counterboring wood |
| 03/23/1989 | WO1989002328A1 Cutting tool, in particular drill and/or milling cutter and its process for producing it |
| 03/23/1989 | DE3730589A1 Deburring and chamfering tool |
| 03/22/1989 | EP0307823A2 A bottle boring milling tool |
| 03/22/1989 | CN2034488U Adjustable expanding-hole drill |
| 03/21/1989 | US4813828 Bottle boring milling tool |
| 03/21/1989 | US4813824 Single-lip drilling tool |
| 03/21/1989 | US4813823 Drilling tool formed of a core-and-casing assembly |
| 03/21/1989 | US4813819 Method for cutting holes |
| 03/09/1989 | DE3728402A1 Tool for producing axially symmetric flat sealing faces on screwed bores for screwed plugs |
| 03/08/1989 | EP0305865A1 Twist drill for tough plastics |
| 03/08/1989 | CN2033719U Jacking drill |
| 03/01/1989 | EP0304702A1 Drill |
| 02/28/1989 | US4808045 End mill with throw-away tip |
| 02/23/1989 | DE3727103A1 Tool for deburring the transition between two bores |
| 02/22/1989 | EP0304002A1 Drill for portable drilling machine, screw holding bit and method for manufacturing these tools |
| 02/16/1989 | DE3726251A1 Twist drill, in particular a solid carbide twist drill |
| 02/15/1989 | EP0302915A1 Combined hole making and threading tool. |
| 02/14/1989 | US4803982 Cranial perforator |
| 02/07/1989 | US4802799 Drill bit |
| 01/25/1989 | CN2031348U Series housing drill for reinforced concrete pre-fabricated member |
| 01/24/1989 | US4799834 Cutter insert for KEVLAR |
| 01/17/1989 | US4798503 Tenon forming tool |
| 01/11/1989 | CN2030518U New reaming bit |
| 01/04/1989 | EP0298061A1 Drill and cutting insert therefore |
| 01/04/1989 | CN2030121U Four-cutting-edge twist drill |
| 01/03/1989 | US4795290 Drill with secondary cutter |
| 12/27/1988 | US4793745 Double diameter boring tool |
| 12/21/1988 | EP0295946A1 Drill bit with cutting insert |
| 12/21/1988 | EP0295309A1 Hole saw |
| 12/21/1988 | CN88205739U Cutting tool for processing non-radial hole |
| 12/20/1988 | US4792264 Single bit reamer |
| 12/15/1988 | DE3744693A1 Valve drilling clamp |
| 12/15/1988 | DE3718158A1 Device for producing an undercut in a cylindrically predrilled hole and anchor rod for inserting in a drilled hole |
| 12/14/1988 | CN88204331U Hollow drill used for heavy castings sampling |