Class 408/213 - Having axially extending peripheral cutting spur

Subclass of Class 408 - Cutting by use of rotating axially moving tool
Definition: Device having a first and a second cutting edge, wherein
No. of patents: 34
Last issue date: 12/06/2011

Number	Title	Issue Date
8070398	Multi-blade self feed bit A shank that has one end adapted to be connected to a chuck of a rotary tool. The opposite end of the shank supports a cutting head having a series of teeth formed on the edge thereof for cutting the periphery of the hole. A screw tip may be provided for feeding the...	12/06/2011
8070397	Self feed bit The self feeding drill bit comprises a shank that has one end adapted to be connected to a chuck of a rotary tool such as a drill or power driver. The opposite end of the shank supports a cutting member where the cutting member is a cup shaped member having a series...	12/06/2011
7625160	Cutting tool A cutting tool for a power tool. The cutting tool can include a tool body having a first end and a second end and an axis extending therebetween. The second end of the tool body can be engageable with the power tool. A feed screw can be supported in the tool body an...	12/01/2009
7416371	Wood boring bit with increased speed, efficiency and ease of use A wood boring bit for boring holes in wood and other similar work surfaces having a central longitudinal axis, a main body, a pilot screw tip and a partial flute with a cutting edge and a cutting spur. The flute portion may be defined by a partial helical section ha...	08/26/2008
7364390	Drilling tool Disclosed is a drilling tool comprising a first drill bit (2) that is provided with at least two forward cutting edges (4, 5) and a second drill bit (3) which encompasses at least two rear cutting edges (6, 7). A cutting groove (8, 9	04/29/2008
7267513	Spade drill bit A spade drill bit (202) comprises a shaft (204) having one end (205) configured to be engaged to a driving tool and a cutting head (206) attached at an opposite end of said shaft (204). The cutting head (206) includes a cent...	09/11/2007
7246976	Spade bit An embodiment of a spade bit has straight grooves at a lead angle of 4 to 8 degrees placed on flat edges of the spade bit. In an alternative embodiment, a spade bit has two steps of straight grooves at a lead angle of 4 to 8 degrees placed on flat edges of the spade...	07/24/2007
7140814	Spade-type drill bit having helical configuration A spade bit including a longitudinally extending shaft having a cutting member located at a distal end thereof. The cutting member comprises a pair of helically shaped, opposed blades joined along the longitudinal axis of the shaft and an axially extending pilot spu...	11/28/2006
6957937	Spade bits with angled sides A spade drill bit has a shaft and a spade head portion arranged on the shaft. The head portion has a rearward facing bottom edge, two longitudinal sides and a forward facing cutting edge. The cutting edge has a pointed, generally triangularly shaped tip and outer en...	10/25/2005
6644899	Drill bit and process of producing a drill bit with improved cutting edges The invention relates to a drill, especially a Forstner bit or a multi-spur machine bit having a drill shaft and a cutter head and provided with a central mandrel, a first and second spur cutter radially extending towards the outside from said mandrel and...	11/11/2003
6499919	Cylindrical bit with hard metal cutting edges In a cylindrical drill bit comprising a tool body with a head having a front face and a cylindrical shaft for chucking the tool body, a hard metal cutting plate structure is mounted on the front face of the head and includes cutting edges formed integrall...	12/31/2002
6394714	Drill bit A drill bit, includes a shank and a cutter head connected to the shank. The cutter head has a center point, and first and second cutting edges extending radially outwards from opposite sides of the center point, wherein the first and second cutting edges ...	05/28/2002
6361255	Drill bit with inscriber A self feeding drill bit for making a smooth bore in a workpiece has a spiral land and flute with a leading end carrying a centered lead screw. The leading end of the bit has a cutter extending from said lead screw to the circumference of the bit. Diametr...	03/26/2002
6354773	Wood boring drill bit A wood boring drill bit assembly includes a cast cutting head body having a front cutting portion, a rear connecting portion and a central longitudinal axis extending from the front portion to the rear portion. A stem extends axially rearward from the rea...	03/12/2002
6354774	Forstner drill bit A modified Forstner type drill bit includes a shank and a drill head. The drill head includes a center brad, first and second radial cutters, first and second following rims and first and second chip channels. The center brad defines a longitudinal direct...	03/12/2002
6152661	Wood coring bit A wood coring bit having a base, a central guide shaft, a sleeve extending along the guide shaft, a pair of scribing teeth on the surface of the sleeve adjacent to the work piece, which scores a track into the work piece as the bit rotates and raker tooth...	11/28/2000
5975814	Cylindrical head boring tool A cylindrical head boring tool (1), such as a Forstner drilling tool, with a main cutting edge (4) having a centering point (5). The main cutting edge extends diametrically across the entire circular cross-section of the boring head (3), the main cutting ...	11/02/1999
5782589	Milling cutter A milling cutter is provided including a tool holder and a cutting tool insert. The tool holder includes a mounting end portion and a cutting end portion. The cutting end portion includes a slot defined by first and second diagonal surfaces provided in an...	07/21/1998
5433561	Wood bit and method of making The present invention comprises a wood bit for use in wood working applications. The blade of the bit is generally spade shaped having cutting spurs on each corner of the blade, a central point projecting from the leading end of the blade, and hooked cutt...	07/18/1995
5312207	Cylindrical bit A cylindrical bit including a drill head with a centering tip, two circumferential cutters, two main cutting edges extending approximately radialy, and two chip channels associated with main cutting edges. The chip channels are open toward a circumferenti...	05/17/1994
5286143	Wood bit and method of making The present invention comprises a wood bit for use in wood working applications. The blade of the bit is generally spade shaped having cutting spurs on each corner of the blade, a central point projecting from the leading end of the blade, and hooked cutt...	02/15/1994
5228812	Throw-away tipped drill A throw-away tipped drill has an insert removably connected to a shank for cutting a workpiece. The insert (31) and the shank (32) have mutually engaging surfaces respectively, and a slit (34, 39) is formed either in the insert (31) or in the shank (32) f...	07/20/1993
5221166	Spade-type drill bit apparatus and method A spade-type drill bit is disclosed having a shank portion and a spade bit portion extending from the shank portion. The spade bit portion includes a spade portion with a planar region, and a center tip concentric with a longitudinal axis and extending fr...	06/22/1993
5092719	Auger bit The subject of the invention is wood industrial drilling cutting tool for preparing holes mainly in wood and in the like sort, which holes can be used as blind holes for fastening together wooden constructions, furniture, toys etc. and which has one or mo...	03/03/1992
5061127	Drill bit with concave spurs and having triangular center point with vee grooves An improved drill bit for wood boring or boring in other relatively soft material, having a generally cylindrical shaft (20), with a flattened blade portion at one end (24). The blade portion (24) is broad and flat with essentially parallel side surfaces ...	10/29/1991
4909678	Boring apparatus for a laminated plate and boring cutter An apparatus for boring a laminated plate includes a table having a first surface on which a laminated plate may be placed for boring and an opposing second surface, the table defining at least one passage therethrough; a supporting pad for urging a lamin...	03/20/1990
4725171	Drill for aramid composites A rotary carbide drill for drilling clean holes in aramid fiber composites is made from a cylindrical rod having a planar elliptical end surface. The drill has a longitudinally extending arcuate flute that becomes shallower as it progresses away from the ...	02/16/1988
4480951	Self-drilling screw A self-drilling screw includes an axially extending screw shank with a leading end and a trailing end. A drill bit is secured to and extends axially outwardly from the leading end of the screw shank. At least one wing extends laterally outwardly from the ...	11/06/1984
4285620	Symmetrical spur point drill A drill for use on reinforced composite parts comprising a two fluted marginless drill body with four forward cutting edges, said edges first scribing a hole in the composite and then cutting the plug from the circumference of the hole inward to the axis ...	08/25/1981
4244667	Boring tool A boring tool of the self-feeding type is disclosed which includes a plurality of cutting members secured to a body and a self-feeding member operative to draw the boring tool into the workpiece. The cutting elements are positioned on the body in such a m...	01/13/1981
4239427	Boring tool A boring tool is disclosed for machining holes in various materials which comprises a one piece body have a plurality of cutting members secured thereto in circumferentially spaced relationship. The cutting members are designed so as to enable them to be ...	12/16/1980
4134706	Axially supported boring tool The invention relates to a bit for boring a hole in wood or the like, the bit having a surrounding skirt to give the bit axial stability during a boring operation, and, a leading spur to produce a circumambient groove prior to and deeper than the cutting ...	01/16/1979
4050841	Power boring bits A power boring bit is fabricated from a shaft member and a disc which has a channel extending from the circumference thereof to a coaxial aperture through which the shaft extends. The shaft has a pointed tip portion at one end which provides cutting surfa...	09/27/1977
4012970	Method of forming a wood boring tool A boring tool for woodworking, and more particularly, a method of manufacturing the cutter head from a blank of cylindrical tool steel bar stock. The opposite ends of the cylindrical blank are turned to the desired radius for the cutter head, a transverse...	03/22/1977

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Class 408/213 - Having axially extending peripheral cutting spur