| Patents for B24B 15 - Machines or devices designed for grinding seat surfaces; Accessories therefor (403) |
|---|
| 11/09/1993 | US5259144 Planetary-type lapping device for finish-grinding the valve seat of a safety relief valve |
| 09/28/1993 | CA1322458C Curved surface rubbing apparatus |
| 08/03/1993 | US5231800 Planar resurfacing grinder mounting and control apparatus |
| 04/06/1993 | US5199222 Device for grinding the head of a valve, especially of an internal-combustion engine |
| 11/25/1992 | CN2122706U Fin grinder for steam locomotive superheater headers |
| 11/03/1992 | US5159786 Method for regrinding a worn valve |
| 10/27/1992 | CA1309256C Tool and method for repairing flat bearing surfaces |
| 09/22/1992 | US5148633 Tool for resurfacing exhaust port flanges |
| 07/28/1992 | US5133154 Apparatus and fixture for use in grinding the needle tip and the needle seat in a fuel valve |
| 05/26/1992 | US5116391 Curved surface rubbing apparatus |
| 04/15/1992 | EP0338030B1 Apparatus for maintenance of ball valve |
| 04/02/1992 | DE4030360A1 Grinding head on machine - is capable of grinding, rotary, horizontal and vertical movements, forward and backward feed |
| 03/24/1992 | US5097635 Method and apparatus for automatic ball to seat lapping |
| 12/10/1991 | US5070653 Centerless valve regrinder |
| 12/04/1991 | EP0459604A2 Device for positioning pairs of headed workpieces, partcularly poppet valves in centreless grinding machines |
| 11/13/1991 | EP0456590A1 Valve head grinding device, particularly for an internal combustion engine |
| 11/08/1991 | CA2041977A1 Valve head rectifying device, particularly for an internal combustion engine |
| 10/24/1991 | DE4117494A1 Centreless grinder for IC engine valves - has controlling disc of constant cylindrical shape parallel to axis of work |
| 07/16/1991 | US5031303 Methods and device for accurately positioning a roller segment for the purpose of finishing its pivoting bearing surface, and a method for machining the seats of device of this kind |
| 06/25/1991 | US5025595 Method and device for finishing a concave spherical bearing surface on a roller segment, particularly for a homokinetic joint |
| 06/11/1991 | US5022192 Conduit grinding apparatus |
| 05/30/1991 | WO1991007254A1 Grinding pin for use in grinding the needle tip and seat in a needle housing of a fuel valve |
| 05/29/1991 | DE4037616A1 Device to hold and clamp engine block - incorporates table to hold block with vertical member and locking brace |
| 05/21/1991 | US5016349 Method for manufacture or repair of a globe valve |
| 03/05/1991 | US4996799 Frost-free silcock seat repair tool |
| 01/29/1991 | US4987701 Endless belt valve grinder |
| 01/08/1991 | US4982531 Method employing abrasive tools for the combined cutting and trimming of glass or crystal articles and an apparatus for carrying out the said method |
| 12/05/1990 | EP0401012A2 Curved surface rubbing apparatus |
| 11/28/1990 | EP0399089A2 Vertical portable lathe |
| 11/28/1990 | EP0399088A2 Lapping machine |
| 10/03/1990 | EP0389468A1 Apparatus and fixture for use in grinding the needle tip and the needle seat in a fuel valve |
| 09/25/1990 | US4958464 Lapping machine |
| 06/19/1990 | US4934351 Fabricating internal combustion engine cylinder heads with close tolerance internal surfaces |
| 06/06/1990 | EP0371833A1 Method of and device for finishing a spherical, concave bearing surface on a roller segment, in particular for a homokinetic joint |
| 06/05/1990 | US4930261 Valve resurfacing apparatus and method for making the same |
| 05/23/1990 | EP0369849A1 Methods and precision-positioning device for a roller segment to finish its rolling surface, and method to work the supporting spots of this device |
| 03/08/1990 | DE3925043A1 Verfahren und vorrichtung zur herstellung von dichtflaechen an ventilen Method and apparatus for the production of sealing faces of valves |
| 02/20/1990 | US4901752 Apparatus for maintenance of ball valve |
| 01/30/1990 | US4896638 Fabricating internal combustion engine cylinder heads with close tolerance internal surfaces |
| 11/29/1989 | EP0344142A1 Method for the combined cutting and dressing of glassware or crystal-glassware by means of abrasive tools, and device for carrying out the method |
| 11/09/1989 | DE3814189A1 Apparatus for grinding sealing surfaces of valve fittings |
| 10/25/1989 | EP0338030A1 Apparatus for maintenance of ball valve |
| 06/08/1989 | DE3740462A1 Method for finishing valve needles for fuel-injection nozzles |
| 05/30/1989 | US4833835 Portable liquid and gas valve seat grinder |
| 04/20/1989 | WO1989003280A1 Apparatus and fixture for use in grinding the needle tip and the needle seat in a fuel valve |
| 04/06/1989 | DE3731472A1 Device for cleaning sealing surfaces of a vessel |
| 04/04/1989 | US4817340 Tool and method for repairing flat bearing surfaces |
| 03/09/1989 | DE3729045A1 Length measuring arrangement with a flange for building onto the gripper arm of an industrial robot |
| 02/23/1989 | WO1989001584A1 Apparatus for maintenance of ball valve |
| 02/21/1989 | USRE32873 Apparatus for grinding and lapping annular sealing faces |
| 01/31/1989 | US4800684 Apparatus for grinding and lapping sealing surfaces in slide valves and the like in situ or in the workshop |
| 01/25/1989 | EP0216769B1 An arrangement for grinding planar annular surfaces |
| 10/27/1988 | DE3712608A1 Machining device |
| 02/18/1988 | DE3627541A1 Grinding device |
| 01/12/1988 | USRE32575 Hand grinder and valve therefore |
| 12/29/1987 | US4715149 Steady rest for valve grinding apparatus |
| 10/06/1987 | US4697388 Arrangement for grinding planar annular surfaces |
| 09/08/1987 | US4691480 Valve seat grinding apparatus |
| 06/16/1987 | US4672786 Valve seat grinding apparatus |
| 05/19/1987 | CA1221841A1 Honing tool |
| 05/05/1987 | US4662123 Grinder apparatus |
| 04/08/1987 | EP0216769A1 An arrangement for grinding planar annular surfaces. |
| 03/24/1987 | CA1219574A1 Hand grinder and valve therefor |
| 12/23/1986 | US4630403 Method and machine for grinding rotationally symmetrical workpieces |
| 12/17/1986 | EP0204958A1 Apparatus for grinding and lapping sealing surfaces of gate valves and the like in-situ or in the shop |
| 11/04/1986 | US4620395 Valve grinding apparatus |
| 09/09/1986 | US4610112 Apparatus for grinding and/or reconditioning plane, annular surfaces |
| 04/15/1986 | US4581854 For internal combustion engine |
| 04/08/1986 | CA1202769A1 Valve seat grinding device and tool for using the same |
| 01/28/1986 | US4566229 Honing tool |
| 12/05/1985 | WO1985005311A1 An arrangement for grinding planar annular surfaces |
| 10/29/1985 | US4549373 Apparatus for grinding and lapping annular sealing faces |
| 10/09/1985 | EP0157007A1 In-situ grinding and lapping apparatus for surfaces in gate valves and the like |
| 10/08/1985 | US4545706 Method and machine for machining the surface of a valve seat |
| 10/08/1985 | US4545152 Grinding apparatus |
| 07/02/1985 | US4525956 In-situ annular face grinder |
| 09/26/1984 | EP0119304A1 Device for grinding and lapping annular sealing surfaces |
| 08/28/1984 | US4467566 Valve seat grinding device and tool for using same |
| 06/19/1984 | CA1169411A1 Valve for handling hot caustic alumina solution with provision for grinding |
| 05/22/1984 | US4449330 Resurfacing process and tool for installing catridge-type |
| 01/31/1984 | US4428160 Centerless valve grinding |
| 11/16/1983 | EP0094223A2 Valve seat facing device |
| 06/21/1983 | US4388782 Handhole seat resurfacing tool for naval pressure fired boilers |
| 04/05/1983 | US4378661 Apparatus for holding valve element and refinishing tool |
| 09/16/1982 | WO1982003032A1 Method and machine tool for machining valve seat surface |
| 07/13/1982 | US4338961 Valve for handling hot caustic alumina solution with provision for grinding |
| 12/15/1981 | CA1114171A1 Centreless valve grinding |
| 09/08/1981 | US4287688 Apparatus for grinding plane, annular surfaces, especially on faying rings in gate valves |
| 12/09/1980 | US4237660 Gasket seat resurfacer |
| 10/21/1980 | US4228621 Valve surfacing machine with variable speed chuck |
| 06/03/1980 | US4205495 Adapter means for a valve reseating tool |
| 06/26/1979 | CA1057059A1 Portable field machine for cutting, grinding and lapping valve seats |
| 05/15/1979 | CA1054375A1 Apparatus for grinding plane, annular surfaces, especially on faying rings in gate valves |
| 11/28/1978 | US4126968 Grinding device for gate valves |
| 09/19/1978 | US4114323 Device for automatically lapping wedge-gate valve seat |
| 08/15/1978 | US4106880 Portable field machine for cutting, grinding and lapping valve seats |
| 04/18/1978 | US4084357 Valve cleaning machine |
| 09/27/1977 | US4050836 Portable field machine for cutting, grinding and lapping valve seats |
| 04/19/1977 | US4018008 Lapping device |
| 02/15/1977 | US4007561 Device for automatically lapping valve seat |