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| Number | Title | Issue Date |
| 7404347 | Noncircular working device A working device of a noncircular workpiece, such as a piston of an internal combustion engine, is improved. A workpiece 10 is held by a work spindle and rotated. A noncircular working device 100 has a noncircular working unit base 110 and is pr... | 07/29/2008 |
| 7270503 | Cutting tool for rotating and drilling into solid blocks The invention relates to a cutting tool for rotating and drilling into solid blocks, comprising a drill shank (1) and a cutting head (2) on one end. The cutting head (2) has a straight, front-face cutting edge (4) extending approximately ... | 09/18/2007 |
| 7185572 | Method for rounding off the edge of a recess on a piston The aim of the invention is to produce a rounding off on a diesel piston comprising a combustion recess and valve recesses that lie at a slant in relation to the piston floor. The rounding off should not significantly increase particle emissions. To this end, the ed... | 03/06/2007 |
| 7029211 | Pipe chamfer tool The present invention a pipe chamfer tool including a body having at least one aperture defined therein, the aperture sized and adapted to slidably receive a pipe. The chamfer tool further includes a cutting blade housed in the body defining at least one cutting sur... | 04/18/2006 |
| 6760961 | Piston machining An apparatus and method of utilization thereof is provided for machining pistons of reciprocating piston internal combustion engines. The piston is held in a work station by its interior cavity and the oil rings, oval side surface and hinge pin bore are machined on ... | 07/13/2004 |
| 6666118 | Piston skirt turning tool and method A single point turning tool has a tip including a cutting edge with a tip radius and a linear portion added on one side of and slightly behind the point to form a cutting edge with a linear portion and a protruding portion. The protruding extends beyond t... | 12/23/2003 |
| 6327946 | Method for manufacturing an improved seal for fluid applications A method for manufacturing a mechanical seal used in fluid applications, wherein the mechanical seal is comprised of a sintered (cemented) tungsten carbide ring that is turned on a lathe at a negative top rake angle instead of formed by grinding. The ceme... | 12/11/2001 |
| 5176051 | Process for machining radial through-slots in piston-ring grooves A method for machining radial through-slots into a wall of a piston-ring groove which separates the ring groove from the piston interior. A piston for an internal combustion engine is provided in which the wall has varying thickness and is thinnest in the... | 01/05/1993 |
| 5056390 | Workpiece holding devices A piston holding device in which a conical register is provided inside the skirt of a piston and is engaged by a conical locating surface on a tailstock. The tailstock may also include a ram which is adapted to push on the inside of a piston crown and for... | 10/15/1991 |
| 4976176 | Weld crown removal module The present invention relates to a module for use with a portable lathe to machine an area of a pipe wherein a cutting tool is supported such that the orientation of its axial path of travel varies as the tool rotates around the pipe. The module feeds a c... | 12/11/1990 |
| 4922772 | Machine tools A machine tool (10) intended for machining components on site comprises a frame (12) mounted on bearings (14, 16). Each bearing (14, 16) comprises an inner fixed bearing (14C, 14D, 16C, 16D) clamped to a work piece (22) and an outer rotatable bearing (14A... | 05/08/1990 |
| 4867020 | Apparatus for finishing pistons and the like and method therefor A method and apparatus for finishing pistons (10) and the like from foundry-turned castings during one clamping operation to provide enhanced manufacturing productivity. Separate boring and turning modules (34, 24) of the apparatus are mounted on a primar... | 09/19/1989 |
| 4663794 | Plastic pipe scraper A plastic pipe scraper for scraping selected portions of the exterior surfaces of plastic pipe sections is provided. The apparatus is comprised of a frame member having a handle attached thereto adapted to fit over the plastic pipe sections, a scraper bla... | 05/12/1987 |
| 4586408 | Plastic pipe chamfering tool A tool for chamfering the ends of plastic pipe of various diameters comprising a main body having various concentric circular grooves of different diameters which are shaped and sized to receive the square-cut ends of standard size plastic pipe. Each circ... | 05/06/1986 |
