| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 408229000 |
With axially extending relief channel
| 77 |
| 408231000 |
With means to retain tool to support
| 19 |
| 408228000 |
Each formed by a pair of axially facing facets | 3 |
| 20080304927 | Cutting bit adapted to cut metal and wood and associated method - A cutting bit adapted to cut wood or metal is disclosed. The cutting bit is prepared by a process which includes the step of performing a forming operation on a metal blank so as to create a formed metal part that includes (i) a shaft having a polygonal shaped drive surface and defining an axis, (ii) a body having a proximal end and a distal end, the proximal end of the body being attached to the shaft, the body further having a first shoulder and a second shoulder at the distal end thereof, the first shoulder defining a first cutting edge segment, and the second shoulder defining a second cutting edge segment, the axis extending between the first cutting edge segment and the second cutting edge segment, (iii) a central cutting member extending from the body so that the central cutting member is aligned with the axis, (iv) a first cutting spur extending from the distal end of the body, the first cutting edge segment being interposed between the first cutting spur and the axis, and (v) a second cutting spur extending from the distal end of the body, the second cutting edge segment being interposed between the second cutting spur and the axis. The process of preparing the cutting bit further includes the step of performing a carburization operation on the formed metal part after the first step so as to create the cutting bit. The cutting bit is particularly useful in performing a drilling operation on a metal construction wall stud to form a hole therein. | 12-11-2008 |
| 20100247259 | DRILL BIT - A drill bit includes a shaft having a first end portion connectable to a power tool and a second end portion substantially opposite the first end portion. The shaft defines a longitudinal axis extending through the first and second end portions. The drill bit also includes a first generally planar blade coupled to the second end portion of the shaft and defining a first cutting edge extending generally perpendicularly from the axis, a second generally planar blade coupled to the second end portion of the shaft and defining a second cutting edge extending generally perpendicularly from the axis, a third blade coupled to the second end portion of the shaft and defining a third cutting edge extending generally perpendicularly from the axis, and a pilot tip extending from at least one of the first, second, and third cutting edges generally along the longitudinal axis. | 09-30-2010 |
| 20130149060 | Spade Bit having Reamer Feature - A spade bit includes a shaft defining an axis about which the spade bit is configured to be rotated. The space bit also includes a blade attached to the shaft and having a first paddle portion and a second paddle portion. In addition, the spade bit includes a tip portion attached to the blade and aligned with the axis. The first paddle portion includes (i) a first leading end portion positioned on a first side of the axis and configured to define a first cutting edge portion, and (ii) a first lateral extension portion configured to define a first sloping surface. The first paddle portion defines a first relief space positioned adjacent to both the first sloping portion and the first leading end portion. The second paddle portion includes (i) a second leading end portion positioned on an opposite second side of the axis and configured to define a second cutting edge portion, and (ii) a second lateral extension portion configured to define a second sloping surface. The second paddle portion defines a second relief space positioned adjacent to both the second sloping portion and the second leading end portion. | 06-13-2013 |
| Entries |
| Document | Title | Date |
|---|
| 20090097933 | SURFACE-COATED CUTTING TOOL - A surface-coated cutting tool includes a coating layer ( | 04-16-2009 |
| 20090110502 | Multi function attachment for a drill - A multi function attachment for a drill for use in building, construction, gardening, yard work, camping, and cooking activities that involve mixing, digging, churning, and stirring includes an elongated shaft securable to the receiving end of the drill, a safety handle slidably disposed upon the shaft and whose slidable movement is delimited by the receiving end of the drill and a handle stop fixedly mounted adjacent the distal end of the shaft, and a digger/mixer member mounted to the distal end of the shaft with the digger/mixer member including a plurality of fingers that project transverse to the axis of the shaft that engage the material, such as dirt or food items, to be dug up, churned, stirred, or mixed upon actuation of the drill. | 04-30-2009 |
| 20090116920 | Rotary Cutting Tool - The present invention discloses a rotary cutting tool which can maintain a secure coupling state between the shank and the cutting head and enhance the durability of the shank by preventing a damage of the shank and the cutting head from being generated. In the rotary cutting tool according to the present invention, the cutting head comprises a central post in a cylindrical shape which is concentric with the rotating axis of the drill body and a plurality of wings formed at the upper end of the central post extending in the radial direction, each of the wings has an end surface, an upper surface, a lower surface, a forward surface which is facing the drill rotational direction, and a rearward surface opposite to the forward surface, the forward surface being provided with the chip flute extended over to the lateral wall of the central post, the lateral wall of the central post consisting of cutouts forming the chip flutes and the circular outer circumferential surfaces, the circular outer circumferential surface of the central post being provided with rotation guide element thereon extending in a circumferential direction. The coupling structural means comprises a plurality of coupling limbs extending from the circumferential portion of the tool shank in parallel with the rotating axis to provide a central opening therebetween for receiving the central post, each of the coupling limbs consisting of a torque bearing part in the upper portion and a frictional fastening part in the lower portion, the torque bearing part being provided on the side of the drill rotational direction with a recess delimited by an axial bearing surface and a torque bearing surface for resting one of the wings therein, the inner wall of the frictional fastening part having a transversal cross section of a circular arc such that the inner wall of the frictional fastening part has a surface contact with the circular outer circumferential surface of the central post, the inner walls of the frictional fastening parts being provided with coupling elements engageable with rotation guide elements of the central post. | 05-07-2009 |
| 20090169319 | DOWNHOLE DEBURRING TOOL - A downhole deburring tool is equipped with retractable cutters which permit it to fit through restrictions in a wellbore—e.g., a subsurface safety valve—and subsequently expand to deburr or scrape a section of tubing having an internal diameter greater than that of the restriction. In one preferred embodiment, tapered surfaces on the tool act to effect retraction of the cutters during withdrawal of the tool from a wellbore. Deburring operations with the tool may increase the effectiveness of bridge plugs and/or ball sealer systems to permit chemical treatment of selected zones. Scraping operations with the tool to remove scale, corrosion and other material from the inner surface of a well tubular can increase the effective diameter of the tubing thereby allowing greater production | 07-02-2009 |
| 20090202314 | BORING TOOL AND HOLDER FOR THE SAME - One object of the present invention is to increase stability for fixing a cutting tool with a holder formed of a sleeve, and to improve machining accuracy of a boring tool using the holder and prevent chipping of a cutting edge. In a holder for a boring tool holding a bar-shaped cutting tool by receiving it in a center hole in a sleeve and clamping it with clamp means, the sleeve is provided with a slit cutting a region from the center hole in the sleeve to an outer periphery surface thereof lengthwise from a front end to a longitudinal partway portion of the sleeve, and is further provided with a fastener tightening a slit-formed portion of the sleeve to change an inner diameter of the center hole. | 08-13-2009 |
| 20100158625 | DRILL HEAD FOR ROCK DRILLS - A drill head extending along a drill axis made of hard metal for rock drills is disclosed. The drill head features at least one major cutting edge and at least one minor cutting edge, where the major cutting edge extends from a first radially inner end to a first radial outer end which lies on a first diameter and where the minor cutting edge extends from a second radially inner end to a second radially outer end which lies on a second diameter that is smaller than the first diameter. A first enveloping surface defined by the minor cutting edge projects completely axially over a second enveloping surface defined by the major cutting edge. | 06-24-2010 |
| 20100183391 | MASONRY DRILL BIT - A masonry drill bit includes a cutting insert which is substantially roof-shaped in sideview and has on each side of its “roof” one lip. Each lip includes a leading cutting surface and a trailing free surface, wherein the mutually abutting free surfaces at the roof ridge define a chisel edge. Each free surface is concave in a sub-zone adjacent to the chisel edge in a manner that the radially outer ends of the chisel edge axially protrude at the end face of the insert relative to the in-between center of the chisel edge. Each lip includes at least one recess and to that extent deviates from the substantially roof-shaped geometry. | 07-22-2010 |
| 20100232899 | Drill - A drill includes a pair of main cutting edges extending from a distal portion of the drill to a position close to a proximal end of the drill to entirely define a two-edge configuration, and a pair of auxiliary cutting edges extending between positions at the distal and proximal sides of a maximum diameter position to partly define a four-edge configuration. A ridgeline of each auxiliary cutting edge is located within an angle smaller than 90° from a ridgeline of the corresponding main cutting edge toward the rear in a rotation direction of the drill. The point angle of the auxiliary cutting edges increases at a higher rate than the point angle of the main cutting edges in a predetermined range from the maximum diameter position toward a distal end of the drill. | 09-16-2010 |
| 20100260567 | Rotary Tool, in Particular a Drill - In order to provide a rotary tool, in particular a drill, with a long service life together with high-quality drill holes, particularly in the case of through bores, the invention provides a cutting head which extends along a rotational axis and has a plurality of main cutting edges which extend radially outwards and each end at a cutting corner having a corner bevel, wherein the corner bevels are of differing designs, specifically in the form of a roughing bevel and in the form of a finishing bevel. | 10-14-2010 |
| 20100296887 | DRILL - A drill is disclosed. The includes a drill head made of hard metal and a shank made of steel to which the drill head is fastened integrally. An underside of the drill head is roughed with multiple depressions and/or elevations, the height of which is a maximum of 15 percent, preferably 10 percent of a height of the drill head. | 11-25-2010 |
| 20100303570 | ADJUSTABLE DRILL BIT - A rotary drill bit is provided comprising a bit body, which includes a connecting portion for connection to a conveyance and a drilling portion. The drilling portion includes a plurality of cutting elements each having at least one cutting surface, the drilling portion being operable in at least two different drilling orientations, and the drilling surface being rotatable in one of two opposing directions, being a first direction and an opposing second direction. | 12-02-2010 |
| 20110103909 | DRILL - A drill having end-face major surfaces, contiguous faces descending from the major cutting edges and flanks contiguous to the major cutting edges. Center cutting edges are formed by end-face taperings. A chisel cutting edge is between the center cutting edges. Shapes of the cutting edges are disclosed. First ones of the flanks are angled to create an outward apex angle so that the major cutting edges and the center cutting edges run at a constant taper angle. | 05-05-2011 |
| 20120076597 | DRILL BIT - The invention proposes a drill bit ( | 03-29-2012 |
| 20120114440 | DRILL | 05-10-2012 |
| 20120230790 | Cutting Tool with a Replaceable Blade Edge - As viewed from a side opposing a bottom face ( | 09-13-2012 |
| 20120315102 | Cutting Tool, Cutting Tool Body and Cutting Tool Support Pad Therefor - A cutting tool has at least one cutting tool support pad. The cutting tool support pad includes two opposing primary surfaces, each primary surface includes an abutment surface and at least one convex contact surface. For each primary surface, the at least one contact surface extends outwardly further than the abutment surface. | 12-13-2012 |
| 20130017029 | GENERAL-PURPOSE MULTIPLE-CUTTING EDGE DRILLAANM Sun; JianingAACI ShanghaiAACO CNAAGP Sun; Jianing Shanghai CN - A general-purpose multiple-cutting edge drill includes: a drill point ( | 01-17-2013 |
| 20130028676 | DEEP HOLE DRILL COMPRISING A COATING - The invention relates to a deep-hole drill, comprising a first coating extending over the effective length of the guide section and a second coating that is applied to the tip of the drill in the cutting region, the region of which extends over an axial length that, at a maximum, corresponds to double the nominal diameter of the drill. In such a way, when the bore tip is worn by use, said tip can be recoated after sharpening without the nominal diameter of the drill tip substantially increasing, in particular even after being sharpened several times. | 01-31-2013 |
| 20130209189 | ROTARY CUTTING TOOL, SUCH AS A DRILL, COMPRISING AN EXCHANGEABLE CUTTING INSERT, AND AN EXCHANGEABLE CUTTING INSERT - A tool shank for use with a cutting insert in a rotary cutting tool includes a body having, and adapted to be rotated about, a central longitudinal tool axis, the body having a tip portion structured to receive at least a portion of the cutting insert therein. The shank also includes a pair of chip flutes formed in the body and a pair of recesses, each recess bordering a respective chip flute. Each recess includes a rim portion extending perpendicular to the tool axis and a bearing surface extending at an incline relative to the tool axis. Each rim portion is adapted to engage a corresponding surface on the cutting insert. Each bearing surface is adapted to engage a corresponding bearing surface on the cutting insert in a manner such that the cutting insert is pulled against the body when the rotary cutting tool is rotated about the tool axis. | 08-15-2013 |
| 20140308086 | DRILL HEAD - A tool head includes a main body having a nominal diameter, a face end center formed on the main body, and at least two major cutting edges which each run radially outward from and adjoin the face end center. The face end center is formed by a cone of circular cross-sectional area, which cone extends from a cone apex through to a cone base. | 10-16-2014 |
| 20140348606 | REAMING TOOL AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a reaming tool, comprising a rotationally drivable main body ( | 11-27-2014 |
| 20160082524 | CUTTING TIP - The invention concerns a cutting tip ( | 03-24-2016 |
| 20160082525 | MULTI-EDGE DRILL BIT - A multi-edge drill bit includes a drill body and a drill tip at one end of the drill body. The drill tip includes two main cutting edges extending to outside and symmetric about a center of the drill body and two crescent grooves symmetric about the center. Each of the crescent grooves intersects with corresponding main cutting edge respectively to divide the main cutting edge into an outer edge, an arc edge, and an inner edge. A transverse edge is formed between the two inner edges and has its middle point forming the core bit. The outer edges intersect with said arc edges to form two symmetric side bits. A ratio of the vertical distance between the core bit and the side bit to drill diameter is 0.02 to 0.03 and a ratio of the transverse edge length to drill diameter is 0.05 to 0.08. The drill bit as described herein provides a stable centering effect during drilling and facilitates continuous stable drilling in round pipe and thin plate applications. | 03-24-2016 |
