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 |
| 7753625 | Helical cutting insert with multiple cutting edges An indexable, helical cutting insert has multiple cutting edges. In tone configuration, the cutting insert includes four helical cutting edges. In another configuration, the cutting insert includes eight helical cutting edges. In any configuration, the cutting inser... | 07/13/2010 |
| 7425108 | Method for milling splines A method of currently milling multiple splines on a round rod material. Inserts mountable on a milling machine are provided. The inserts each include two sets of milling teeth. The sets or sections of teeth are formed in the arc of a circle to enable milling multipl... | 09/16/2008 |
| 7367754 | Variable helix rotary cutting tool A rotary cutting tool has a substantially cylindrical main body and four flutes. The main body has a shank end, a cutting end formed integrally opposite the shank end, and a longitudinal axis of rotation. The four flutes include a pair of flutes comprising a first f... | 05/06/2008 |
| 7322774 | End mill and a method of operating an end mill An end mill for cutting or milling objects and a method of operation thereof. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification... | 01/29/2008 |
| 7306412 | Rotary milling cutter and milling method using the same technical field An end mill 10 is a tool for milling a metal block such as a metal mold and is placed in a machine tool such as a milling machine when in use. The end mill 10 is used to provide a rotary milling cutter and a milling method using the same, in which it i... | 12/11/2007 |
| 7306408 | Rotary cutting tool A rotary cutting tool or end mill is provided, the tool comprising a plurality of pairs of diametrically-opposed, symmetrical, helical flutes formed in a cutting portion of the tool body, wherein the pitch between at least one pair of adjacent helical flutes is less... | 12/11/2007 |
| 7284935 | Rotary cutting tool A rotary cutting tool comprises a body having opposite ends and a plurality of diametrally opposed pairs of flutes forming cutting edges extending helically from one end of the body toward the opposite end. All of the cutting edges are circumferentially spaced unifo... | 10/23/2007 |
| 7252460 | Indexable tip for beveling by means of a conical milling head Based on an indexable tip (1), which serves to bevel a cylindrical or conical milling head (12) and which has both ground cutting edges (7) as well as a bore hole (8) that extends from the free surface (2) to the supporting surface... | 08/07/2007 |
| 7223053 | Helical flute end mill with multi-section cutting edge An end mill is provided that includes a shank section and a fluted section. One or more helical teeth are disposed along an outer surface of the fluted section. Each helical tooth has a cutting surface and a relief wall that intersect to form an angle defining a hel... | 05/29/2007 |
| 7186063 | Milling cutter A rotary multi-tooth milling cutter, each tooth having a tooth face is provided. The tooth face has at least two sections, a first section nearest the cutting edge having a convex form as viewed in a cross section perpendicular to the cutter axis and a second sectio... | 03/06/2007 |
| 7134811 | Helical end mill type cutter configured to compensate for radial runout An end mill type rotary cutting tool and associated cutting inserts that collectively compensate for radial pocket runout, thereby eliminating overlap marks in a machined work piece. The tool has pockets arrayed in helical flutes such that after one insert has abrad... | 11/14/2006 |
| 7094005 | Shank milling cutter having a wiper radius A shank milling cutter includes a cutting portion which is intended to come into engagement with the workpiece, wherein the envelope surface of the cutting portion is substantially cylindrical. At least one major cutting edge is arranged at the peripheral surface of... | 08/22/2006 |
| 7077606 | Rotating chip removing tool, such as a drilling and chamfering tool, with cutting inserts, and a milling cutter with cutting inserts A rotating chip removing tool, such as a drilling and chamfering tool, and a milling cutter, each of which have at least one cutting insert or cutting plate. The cutting plate has a guide recess that adjoins the underside of the cutting plate. A plate seat for accom... | 07/18/2006 |
| 7001113 | Variable helix cutting tools Tools, including end mills, include a flute having a helix which varies along the length of the tool. The invention is not limited in terms of the number of flutes, whether odd or even; helix change(s) within a flute or between flutes; or indexing between cutting ed... | 02/21/2006 |
| 6991409 | Rotary cutting tool A rotary cutting tool that includes an elongated tool body, rotatable along a longitudinal axis of rotation is disclosed. It has a fluted cutting end on one end and a shank end on the opposite end of the tool body. The fluted cutting end includes a nose, a periphery... | 01/31/2006 |
| 6976811 | Milling cutter A cutting tool for cutting a workpiece comprising a tool body having an outer surface thereon and a central axis therein and including at least a first and second spiraling flute in the outer surface, each flute including a plurality of inserts secured therein to de... | 12/20/2005 |
| 6953310 | Cemented carbide ball end mill A cemented carbide ball end mill comprises a cutting portion with a semi-spherical ball portion at a tip thereof. The cutting edge portion has a cutting edge rake face and a chip evacuating flute at the ball portion. An angle formed by a straight line connecting a v... | 10/11/2005 |
| 6899494 | Rotary metal cutting tool A rotary end-mill is disclosed having a deferential flute construction with all individual flutes being unequally spaced about the circumference of the cylindrical tool body at different helix angles. The cutting edges of these flutes also face in the direction of t... | 05/31/2005 |
| 6890130 | Tire machining tool A cylindrical cutting tool for a tire detreading or machining machine, the circular blade of which has a beveled cutting edge, wherein the cutting edge is interrupted by at least one notch, that is to say a portion having a lower axial height than the cutting edge. | 05/10/2005 |
| 6846135 | Radius end mill having radius edge enhanced in resistance to chipping and fracture In a radius end mill having a bottom edge formed on the end face thereof, a radius edge designed in a substantially quarter arc shape and formed at a corner portion thereof, and an outer peripheral edge formed spirally on the side surface thereof, the bottom edge an... | 01/25/2005 |
| 6773209 | Helical insert and cutter bodies A cutter system that is designed to create a continuous cutting true helix while having cutting inserts that are indexable on at least two cutting edges by rotating the cutting insert. High positive radial and axial rakes enable free cutting machining with a fine fi... | 08/10/2004 |
| 6749375 | End milling cutter for machining workpieces made of a non-ferrous metal or plastic An end milling cutter for machining workpieces made of a non-ferrous metal or plastic including two or more helically shaped cutting edges between which helically shaped chip flutes are formed which define a chip-cutting face along with the cutting edges, and a tool... | 06/15/2004 |
| 6719501 | Cemented carbide end mill A cemented carbide end mill has three or more cutting edges formed on its periphery and flutes each provided between adjacent cutting edges. The land width of each cutting edge and the flute width has a ratio of 1:1.5 to 1:4. Each flute has a helix angle of 35°-60Â... | 04/13/2004 |
| 6692197 | Metal cutting tool with direct cutting plate arrangement At least two cutting plates are provided for a metal cutting tool, particularly adopted for milling work, which are in direct contact with each other and therefore support each other. A particularly simple design of a plate seat may be used for a pluralit... | 02/17/2004 |
| 6659694 | Cutter insert mounting and method A cutter head having blade unit mounting cavities with spaced-apart mounting points and a blade unit. Each blade unit has at least one blade edge and is configured to have the blade edge disposed to align with the blade edge of another blade unit each in ... | 12/09/2003 |
| 6637987 | Drill bit A drill bit capable of axial cutting as well as side cutting, having a generally cylindrical elongate body with a bit diameter, includes a frontmost drilling end for axial cutting, a cutting section extending from the drilling end for side cutting, and a ... | 10/28/2003 |
| 6626214 | Cutter for a wood planing machine A cutter for a wood planing machine includes a block piece having a blade-mounting face that is formed with a positioning groove, and a blade attached to the blade-mounting face and having a plurality of positioning tabs projecting into and engaging the p... | 09/30/2003 |
| 6575674 | Reaming tool and process for its production A multi or single cutter reaming tool has a shaft and a shaped head with at least one cutter. The shaped head is produced from a blank having a base body of a base material on its envelope surface with at least one rectilinear or helical groove-shaped rec... | 06/10/2003 |
| 6439811 | End-mill tool with high and low flutes and related method for rough cutting and finishing a workpiece An improved rotary cutting tool overcomes the disadvantages and limitations of known constructions through the use of least one primary flute defining a low-angle cutting surface, and at least one secondary flute defining a high-angle cutting surface. The... | 08/27/2002 |
| 6435780 | Rotary cutting tool An improved end milling tool effective to reduce forces produced in ramp cutting comprises a plurality of end cutting edges, and a plurality of side cutting edges, each end cutting edge lying parallel to a radius of the tool tip and intersecting a side cu... | 08/20/2002 |
| 6315504 | Twist Drill An improved twist drill is provided which reduces wear or chippings of the major cutting edges (3) and those of the leading edges (7) of land (9) and which has a long service life and stays sharp. A twist drill has a pair of chip discharge flutes (6), a p... | 11/13/2001 |
| 6234725 | Rotary cutting tool A rotary cutting tool is disclosed having an evacuation bore in a shank and generally radially extending passages opening to the bore to conduct away material being removed by cutters. Intersecting cutters are disposed at the intersections of right and le... | 05/22/2001 |
| 6231275 | Ball nose end mill A ball nose end mill includes a holder body with a first half and a second half of a tip end thereof divided by a slot, a plate-shaped insert in the slot, a clamp screw with a screw shaft screwed into the second half and a screw head bearing against the f... | 05/15/2001 |
| 6224299 | Tool with straight inserts for providing helical cutting action A milling tool having replaceable straight elongated inserts that provide a helical cutting action. The tool has grooves formed at an angle with the longitudinal axis of the tool, the grooves have flat surfaces. Wedge means secure the respective inserts i... | 05/01/2001 |
| 6179528 | End-mill tool with high and low helical flutes and related method for rough cutting and finishing a workpiece An end-mill tool has at least one low helix angle flute, or primary flute) and at least two low helix angle flutes, or secondary flutes. The primary and secondary flutes intersect to define a plurality of compound helical cutting surfaces. Each of the com... | 01/30/2001 |
| 6168355 | End-mill tool with multiple cutting edges The present invention provides an end-mill tool which includes a shank, a point, and a main body portion located intermediate the shank and the point. A first flute is formed on the main body portion along a first helix. A second flute is formed on the ma... | 01/02/2001 |
| 6164876 | Cutting tool A cutting tool having a body that is cylindrical in shape having a shank at one end and a cutting end opposite thereof. The cutting end has an even number of flutes thereon with every other flute being a cutting flute, such as a knuckle flute including a ... | 12/26/2000 |
| 6152657 | Center cutting end mill A center cutting or plunging end mill or ball nose end mill has one or more spiral grooves and flutes in the walls of a mill body of cemented tungsten carbide. Each groove includes polycrystalline diamond or cubic boron nitride formed in situ along a lead... | 11/28/2000 |
| 6082935 | Solid cemented carbide ball nose end mill An improved solid cemented carbide ball nose end mill is provided which enables a cutting of a quenched or hardened difficult-to-machine material without any chipping or break of edge under the condition of a high speed and high load cutting. The improved... | 07/04/2000 |
| 6007276 | End-mill tool with high and low helical flutes and related method for rough cutting and finishing a workpiece An end-mill tool has at least one low helix angle flute, or primary flute) and at least two low helix angle flutes, or secondary flutes. The primary and secondary flutes intersect to define a plurality of compound helical cutting surfaces. Each of the com... | 12/28/1999 |
