...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7441484 | CNC prescribe method to encourage chip breaking A method for pre-scribing a workpiece to facilitate chip breaking when machining the workpiece on the same machine with the same tooling used for cutting, utilizing an invokable CNC cycle of the CNC machine completing the workpiece machining. The machine includes a ... | 10/28/2008 |
| 7261496 | Two-part clamping claw The invention relates to a clamping claw having a securing leg and a clamping leg for securing an object in a first recess of a support, with the clamping claw in the installed state being secured on the support by way of its securing leg by means of a bolt and clam... | 08/28/2007 |
| 7128501 | Lathe tool assembly A lathe tool assembly includes a pair of set screws that reduce vibration of a work piece that is being machined. A clamp set screw passes through a clamping assembly to a chip breaker that covers a cutting bit. The end of the clamp set screw bears against the chip ... | 10/31/2006 |
| 7063489 | Tangential cutting insert and milling cutter A tangential milling cutting insert having two identical opposing end surfaces with two identical opposing major side surfaces of a generally isosceles trapezoidal shape and two identical opposing minor side surfaces extending between them is disclosed. Each end sur... | 06/20/2006 |
| 6969218 | Profile turning tool The profile turning tool is used for rough-turning and dressing circumferential and flat surfaces, in particular of workpieces made of light metals. It consists of a holder (10) with a receiver (16) for a diamond cutting head (18) as well as a c... | 11/29/2005 |
| 6957933 | Threading insert with cooling channels A metalworking apparatus includes a threading insert with a channel-less chip breaker and a holder for holding the threading insert. The threading insert includes (i) one cooling channel disposed on the top side of the threading insert for each crest and each valley... | 10/25/2005 |
| 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 |
| 6581339 | Erectable platform An erectable platform includes at least one bay, the bay having; at least one deck assembly, the deck assembly having a plurality of threaded couplers. The platform further includes support structure having at least two spaced apart main beams and at leas... | 06/24/2003 |
| 6447560 | Method for forming a superabrasive polycrystalline cutting tool with an integral chipbreaker feature A method or process for making polycrystalline diamond or polycrystalline CBN cutting tools (Superabrasives), which have integral chip-breaking features is disclosed. This method involves pressing a die or other like rigid component against either the out... | 09/10/2002 |
| 6394709 | Tool holder having a clamp plate for transmitting clamping forces from a clamping arm to a cutting insert A cutting insert is clamped in a pocket of a holder by a top clamp assembly which includes a clamp arm screwed to the holder, and a clamp plate interposed between the insert and a front part of the clamp arm. The clamp plate is formed of a harder and more... | 05/28/2002 |
| 6312199 | Cutting tool A metal cutting tool includes a tool body which carries a cutting insert and has nozzles for directing cooling fluid against the insert. The tool body defines a longitudinal axis and is insertable into a holder in an axial direction, whereby a surface of ... | 11/06/2001 |
| 6302004 | Method and apparatus for increasing the productivity of CNC machine tools A CNC machine tool has a turret (10), a reservoir of coolant, a pump supplying coolant under pressure from the reservoir (not shown) to the turret (10), a tool holder (13) mounted on the turret at a tool station (8) opposite a rotatable spindle (not shown... | 10/16/2001 |
| 6170368 | Detachable chipbreaker for a cutting insert A cutting insert which includes a holder that contains a pocket and a hard insert that has a rake surface. The hard insert is contained within the pocket so as to present a cutting edge. The cutting insert also includes a chipbreaker which comprises a pla... | 01/09/2001 |
| 6045300 | Tool holder with integral coolant passage and replaceable nozzle A tool holder for holding cutting inserts for machine tool work includes an integral cooling passage therethrough. Various coolant nozzles are interchangeably installable in the holder, to provide different amounts of coolant fluid flow depending upon the... | 04/04/2000 |
| 5947648 | Toolholder assembly A toolholder assembly includes a holder blade having an upper clamping jaw and a lower base jaw defining therebetween an insert receiving slot for releasably retaining a cutting insert therein. The upper clamping jaw has an upper surface disposed apart fr... | 09/07/1999 |
| 5704734 | Metal cutting tool assembly having and automatically adjustable chipbreaker A metal cutting tool assembly (1) having an automatically adjustable chipbreaker (23) is provided that comprises a cutting insert (11) for cutting a relatively rotating workpiece, a holder (3) for holding the insert (11), an insert driver (5) for applying... | 01/06/1998 |
| 5592863 | Cryogenic machining of soft/ductile materials A method for producing discontinuous chips during the machining of a work piece by a cutting tool is provided. The method includes the steps of engaging the cutting tool into the workpiece to produce a continuous chip and directing a stream of cryogen tow... | 01/14/1997 |
| 5538367 | Metal cutting tool assembly having an automatically adjustable chipbreaker A metal cutting tool assembly (1) having an automatically adjustable chipbreaker (23) is provided that comprises a cutting insert (11) for cutting a relatively rotating workpiece, a holder (3) for holding the insert (11), an insert driver (5) for applying... | 07/23/1996 |
| 5348065 | Cutter blade arrangement A cutting blade for working logs to timber form while simultaneously removing wood chips which includes a pair of adjacent recesses formed in the periphery of the blade. A knife is bolted in the cutting blade in a first recess and a wear insert is separat... | 09/20/1994 |
| 5340242 | Chip-breaking toolholder with adjustable orifice cap A toolholder includes a support having an insert seat for receiving a cutting insert. The cutting insert is brought into engagement with a workpiece to remove a chip of metal from the workpiece. The toolholder includes fluid chip-breaking means for direct... | 08/23/1994 |
| 5271301 | Vibrating cutting tool A vibrating cutting tool capable of making uniform micro-vibrations at the cutter edge generated during machining. The vibrations at the cutter edge are transmitted to balls biassed by springs, compressing the springs. The vibrations are transmitted from ... | 12/21/1993 |
| 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 |
| 4955264 | Tool assembly with a hydraulic chip-breaking fluid system The present invention is a tool assembly comprising a tool block and a tool holder capable of delivering chip-breaking fluid to the tool holder without a fixed attachment to the tool holder. The tool block is formed with a tool shank cavity having a tool ... | 09/11/1990 |
| 4252038 | Modified tool holder to prevent insert slippage and fracture A cutting tool holding system is disclosed. The system employs an improved chip breaker element having a lip mechanically gripping a radially extending and exposed edge of the cutting tool insert; the breaker element is held against relative sliding movem... | 02/24/1981 |
| 4223580 | Rotary cutting tool The herein-proposed cutting tool comprises a spindle carrying the cutting element shaped as a solid of revolution, and a chip-breaker knife which, according to the invention is made likewise as a solid of revolution and set on the spindle rotatably round ... | 09/23/1980 |
| 4189264 | Cutting insert and chip control assembly A polygonal insert of hard cutting material used in single and multiple toolholding means to receive the same, the insert comprising a wafer having conjunctive side walls lying in planes intersecting each other and parallel to the axis of the insert, one ... | 02/19/1980 |
| 4123194 | Profiled chip breaker A chip breaker includes an abutment surface having geometry generally corresponding in profile to the geometry on the cutting edge of the associated thread chaser to permit such abutment surface to be uniformly spaced from respective roots and crests of t... | 10/31/1978 |
| 4010526 | Cut-off tool A cut off tool comprises an elongated support blade of uniform thickness adapted for mounting in a tool holder and having a head projecting above said blade at one end thereof. An elongated carbide insert having an undercut slot is mounted over the top of... | 03/08/1977 |