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| Number | Title | Issue Date |
| 5906537 | Five spindle fluting machine A new machine for and method of manufacturing fluted pin fasteners and the pins produced thereby are disclosed which utilize a circular grinding arrangement of a plurality of grinders which grind flutes into a threaded pin. An internally threaded collar t... | 05/25/1999 |
| 5065549 | Method and apparatus for manufacturing K-files and reamers A process and apparatus for grinding the proper taper and all of the flutes with the correct number of spirals simultaneously in a single cycle of the grinding machine. This is accomplished by passing a rotating stock to produce the correct number of spir... | 11/19/1991 |
| 4999952 | Method and apparatus for manufacturing K-files and reamers A process and apparatus for grinding the proper taper and all of the flutes with the correct number of spirals simultaneously in a single cycle of the grinding machine. This is accomplished by passing a rotating stock to produce the correct number of spir... | 03/19/1991 |
| 4813188 | Method of shaping workpieces especially forming undercut archimedean spirals Hitherto mechanical lever systems and cams were used to effect the necessary relative movements between the workpiece and the grinding disc. In order to attain a higher production rate at improved quality, it is proposed to use electronic means for shapin... | 03/21/1989 |
| 4358911 | Machine for relief grinding tap threads A relief thread grinding machine for making screw taps wherein a workpiece 10 is clamped to a resiliently mounted body 5 of a longitudinally adjustable sled 1. The body carries a follower wheel 17 which bears on a cam roller 15 rotatably mounted on the sl... | 11/16/1982 |
| 4202222 | Method for preparation of spherical hob for generation of gear A method for the preparation of a spherical hob for generation of a gear, which has a plurality of hob blades formed on the surface of a spherical hob blank, is disclosed. This method comprises forming spirally on the peripheral surface of the hob blank p... | 05/13/1980 |
| 4075790 | Screw thread tap grinding with automatic loading means Tap grinding apparatus is provided consisting firstly of a support or cradle mountable in a grinding machine in relation to a thread grinding wheel of the latter for relative traverse of said support and grinding wheel, the support having headstock and ta... | 02/28/1978 |
| 4016680 | Sharpener for twist drills including grinding wheel dressing means A sharpener having a clam-shell housing in which a motor is mounted for driving a grinding wheel disposed adjacent one end of the housing, a chuck which holds either twist drills or a diamond dresser, the chuck being indexable 180° about its axis, and st... | 04/12/1977 |
| 3994099 | Screw thread tap grinding Apparatus for screw thread tap grinding is provided in which the tap workpiece is oscillated laterally relative to the thread grinding wheel in order to impart relief to the ground thread form of the tap workpiece. The apparatus consists of base structure... | 11/30/1976 |
