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| Number | Title | Issue Date |
| 5042204 | Finishing machine for trochoidal surfaces An improvement in a finishing machine for trochoidal surfaces of a rotary engine housing. The finishing machine rotates the engine housing in a trochoidal path around a constant tool engagement point that utilizes a super finishing abrasive film advanceme... | 08/27/1991 |
| 4617762 | Cam controlled machine for forming non-standard surfaces A cam controlled grinding machine in one embodiment of which the spindle is supported for rotation and lateral movement within a nest of three annular rings. Advantageously, roller bearing arrays between the spindle and the first annular ring, the first a... | 10/21/1986 |
| 4356669 | Cam control grinding machine A grinding apparatus for forming and grinding complex curved surfaces such as the peritrochordal bore of rotary a combustion engine, e.g. Wankel engine, having a cam member with a surface corresponding to the surface of the workpiece to be ground, a grind... | 11/02/1982 |
| 4005552 | Apparatus for improved control of a grinding machine A method and apparatus are described for modifying the operation of a grinding machine in accordance with the angular position of a workpiece being ground. In addition to conventional apparatus, the improved apparatus comprises means for sensing the angul... | 02/01/1977 |
| 3982356 | Honing machine for finishing trochoidal bore of rotor housing of rotary engine A honing machine for finishing a trochoidal bore of a rotor housing of a rotary engine. The honing machine includes a honing head and a machine table both of which are driven by a common drive shaft separately from each other in the same direction but wit... | 09/28/1976 |
| 3964367 | Device for machining trochoidal inner walls, especially for the cylinders of Wankel engines A machine for machining the inner walls of the cylinder of a Wankel engine in which a support is provided for the cylinder to be machined which rotates the cylinder about a first axis in one direction with the first axis moving bodily about a second axis ... | 06/22/1976 |
| 3955325 | Abrading apparatus for the housing of a rotary engine An abrading apparatus for the housing of a rotary engine formed therein a cavity in which a rotor piston is adapted to revolve while being maintained in sliding contact with the inner peripheral wall of the housing. The abrading apparatus comprises rotata... | 05/11/1976 |
| 3948144 | Peritrochoid curved surface generating apparatus A peritrochoid curved surface generating apparatus comprises an outer cylinder rotatably supported on a frame, a first central shaft rotatably journalled in the rotating axis of the outer cylinder, an inner cylinder adjustably fixed within an eccentric op... | 04/06/1976 |
