Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7216571 | Process for twist-free steel cutting of rotational symmetrical surfaces The invention relates to the cutting of rotating surfaces, especially centric symmetric surfaces (1a) of a metal workpiece (1), especially one made of steel or gray cast iron, also when said workpiece is in hardened state, by means of a geometri... | 05/15/2007 |
| 7140088 | Turning tool for grooving polishing pad, apparatus and method of producing polishing pad using the tool, and polishing pad produced by using the tool Disclosed is a turning tool for cutting circumferential grooves into a surface of a polishing pad formed of a resin material and utilized for polishing semiconductor devices. The turning tool comprising a cutting part arranged to have a tooth width within a range of... | 11/28/2006 |
| 7017246 | Turning tool for grooving polishing pad, apparatus and method of producing polishing pad using the tool, and polishing pad produced by using the tool Disclosed is a turning tool for cutting circumferential grooves into a surface of a polishing pad formed of a resin material and utilized for polishing semiconductor devices. The turning tool comprising a cutting part arranged to have a tooth width within a range of... | 03/28/2006 |
| 6939090 | Throwaway tip and throwaway-type cutting tool A throwaway-type cutting tool including a tool body having a distal end, and a plurality of throwaway tips mounted to the distal end. Each of the plurality of throwaway tips including a plate of a substantially rectangular shape. The plate has a corner angle of two ... | 09/06/2005 |
| 6877406 | Cutting tool, in particular for machining piston rings and method for machining piston rings Cutting tool (1) with a cutting insert (3), on the front edge (14) of which there is a first major cutting edge (15) and an approximately U-shaped indentation (18) that interrupts said first major cutting edge (15), whereby ... | 04/12/2005 |
| 5370023 | Cutting tool for turning parallel grooves A cutting tool for simultaneously forming a plurality of deep, narrow, closely spaced parallel grooves in a hard, brittle substrate material comprises a rigid housing which defines a plurality of closely spaced cutting blade cavities, each of said cavitie... | 12/06/1994 |
| 5246315 | Cutting insert and cutting tool for a peeling operation A multi-cornered cutting insert includes a corner cutting edge at each corner, and a chipbreaking recess spaced inwardly of each corner cutting edge. The recess is curved as the insert is viewed in plan. A clearance face for each corner cutting edge has a... | 09/21/1993 |
| 5205678 | Gear cutting tool A gear cutting tool has a series of separate cutter inserts removeably clamped to the front ledge of a holder block. Each cutter insert has a forward cutting edge that extends beyond the ledge and a rear positioning portion that includes a central project... | 04/27/1993 |
| 5119703 | Cam shaft tool A cam shaft tool for a slide type lathe. The invention generally comprises an improved adjustable tool wherein a plurality of holders each carrying a cutting insert is fixed to a main block via an adjustment block. The holder is radially adjustable relati... | 06/09/1992 |
| 5067377 | Method of manufacturing a master for the fabrication of projection screens and tool for carrying out the method A method of manufacturing a master for projection screens, according to which a pattern of parallel rectilinear grooves and ribs is formed on one side of a plate of machinable material by a slotting operation performed by means of a profile chisel. The gr... | 11/26/1991 |
| 5029500 | Cam shaft tool A cam shaft tool for a slide type lathe. The invention generally comprises an improved adjustable tool wherein a plurality of holders each carrying a cutting insert is fixed to a main block via an adjustment block. The holder is radially adjustable relati... | 07/09/1991 |
| 5007774 | Cutting or drawing tool A cutting or drawing tool, in which a cutter plate can be precisely located and positioned by means of an adjusting device, in order to produce high-precision profiles. By provision of a second cutter plate, a further face of the workpiece can be machined... | 04/16/1991 |
| 4530263 | Holder and attachment for lathe tools A holder for lathe tools having an elongated sleeve for receiving a tool shank and a plurality of shims for fixing the height of the shank in the sleeve. At least a portion of one wall of the sleeve is made of a ferromagnetic material. The holder also inc... | 07/23/1985 |
| 4474721 | Apparatus for forming threads and filaments of fluorocarbon resin and method thereof An apparatus for forming and producing elongated threads or filaments of synthetic material such as fluorocarbon resins which can be used to form yarns utilizes, a turning machine having, a chuck assembly for mounting a billet of the fluorocarbon resin ma... | 10/02/1984 |
| 4409868 | Threading tool and method A threading tool is disclosed featuring the combined utilization of a multi-toothed thread chaser insert with a single point indexable thread chaser insert. In generating a desired thread form, successive teeth of the multi-toothed chaser perform the init... | 10/18/1983 |
| 4223576 | Apparatus and method for lathe cutoff and chamfer A tool holder is provided for the cross slide of a lathe. A cutoff tool extends horizontally from the holder toward the rotational axis of a workpiece in the lathe, and a chamfering tool extends vertically downwardly from the holder in a common cutting pl... | 09/23/1980 |
| 4011026 | Interlock cutting tool holder A cutting tool holder includes an elongated holder body having a first end face through which passes a shaft receiving bore which extends longitudinally through the holder body to receive an elongated tool mounting shaft therein. The tool mounting shaft h... | 03/08/1977 |
