Class 175/395 - Impact type

Subclass of Class 175 - Boring or penetrating the earth
Definition: Apparatus in which the cutting edge of the bit is of the
No. of patents: 31
Last issue date: 04/01/2008

Number	Title	Issue Date
7350584	Formed tubulars A method of lining a drilled bore comprises running a tubular into a drilled bore and then corrugating the tubular in the bore. The tubular may also be expanded in the bore. In other aspects of the invention the tubular is corrugated prior to running into the bore a...	04/01/2008
7309195	Shank for a rotary and/or percussive tool A shank for a rotary and percussive tool has a locking groove (3) arranged between two guided regions (1a, 1b) and axially closed at its opposite ends for receiving at least one radially displaceable and axially displaceable, withi...	12/18/2007
7261169	Shank for a rotary/percussion tool A shank for a working tool has at least three recesses (5) provided within the lockable region (3) and arranged in a cross-section (c-c) to the tool axis (A) at least at angles of 0°, 120°, and 240° within the radial reference dimension (R) of the s...	08/28/2007
7231992	Drill bit A drill bit has, on its face, a combination of at least one straight cutting edge and at least two curved cutting edges arranged in a Y-shape. The cutting edges on the face of the drill bit are arranged such that they start from the axis of the drill bit or end dire...	06/19/2007
7225890	Cutting plate for a drill bit An auxiliary cutting plate (10) for a multi-cutting plate drill bit (2) has a body (44) for fixing into a slot in the drill bit (2) and a profiled tip (46). The body (44) has a central longitudinal axis and the profiled tip ...	06/05/2007
7185721	Male portion, drill bit and threaded joint for percussive rock drilling A male portion for percussive rock drilling includes sections of reduced cross-sectional area. At least one thread for percussive rock drilling is provided at an end of the male portion. The end of the male portion comprises an abutment surface for the transfer of i...	03/06/2007
7171205	Architecture of an unlicensed wireless communication system with a generic access point An unlicensed wireless service is adapted to generate the interface protocols of a licensed wireless service to provide transparent transition of communication sessions between a licensed wireless service and an unlicensed wireless service. In one embodiment, a mobi...	01/30/2007
7163363	Perforating drill The invention concerns a drill including a generally cylindrical body, tipped with a head and provided, over at least part of its length, generally spiral evaporating grooves. The groove(s) are delimited, over at least part of their length, by a succession of facets...	01/16/2007
7114584	Hollow auger head assembly A hollow auger head assembly for penetrating geological formations that utilizes drill bit assemblies to which both blades and finger bits are attached. The method of securing the individual drill bit assemblies to the auger head reduces incidents of the drill bit a...	10/03/2006
7097396	Drill bit An object of the present invention is to provide a drill bit which is simple in design, high in rigidity, and superior in durability and whose drilling function is in no way inferior to that of conventional drilling bits. To this end, in a drill bit comprising a cut...	08/29/2006
7090038	Bedrock drilling and excavating apparatus A bedrock drilling and excavating apparatus receives power from a rotational power source to drive a drill to strike and shatter bedrock under the gravity of the apparatus and reciprocal vibrations of a pneumatic unit located on the apparatus. The apparatus includes...	08/15/2006
7028790	Rotary drill bit A drill bit includes a body defining an axis and first and second cylindrical portions, a coupling adapted for connection with a rotary driver, and a depth stop adjustably secured to a first portion by a plurality of adjusting fasteners in a manner to limit penetrat...	04/18/2006
7001120	Drilling tool The invention relates to a drilling tool (36), in particular for working concrete, rock, masonry and suchlike materials, having a single- or multi-edge tool head with at least one cutting body (1) which comprises a central region (12) which is d...	02/21/2006
6910838	Rock drill A rock drill for rotary hammers is proposed in which a conveying helix (3) having main and secondary webs (6 to 9) is used. A one-piece carbide crown, with its wing-shaped main and secondary lips (24 to 27), is butt-welded to the c...	06/28/2005
6564887	Core drill The present invention relates to a core drill wherein initial drilling workability is improved through reduced frictional resistance on the segment tips, when they are seated on the surface of an article to start cutting operation, and wherein cutting scr...	05/20/2003
6328506	Masonry drill bit A masonry drill bit 1 having an active diameter of D, comprising a shaft 3 and a tip 5 for engaging a workpiece, the tip 5 including a central portion 11 extending ahead of an outer portion 13, wherein the central portion 11 has a width of at least 0.25D ...	12/11/2001
6102634	Masonry drill bit A masonry drill bit 1 having an active diameter of D, comprising a shaft 3 and a tip 5 for engaging a workpiece, the tip 5 including a central portion 11 extending ahead of an outer portion 13, wherein the central portion 11 has a width of at least 0.25 D...	08/15/2000
5984596	Insertable tool and tool holder for drilling and/or impacting electric machines A combination of an insertable tool (2), e.g. a drill or chisel, for an electrical machine for drilling and/or impact operation and a tool holder (20) for the insertable tool is disclosed. The insertable tool includes a tool shaft (11) provided with a rou...	11/16/1999
5779403	Percussive blow assisted rotary drill A percussive blow assisted rotary drill includes an axially extending shank (1) with a leading end face (3) and an axially extending outside surface (2) containing a helically extending drilled material removal groove (4, 5). At least one hard metal cutti...	07/14/1998
5553682	Rock drill A rock drill includes an axially elongated shank with a chucking shank part (1) at one end, a drilling shank part (2) extending from the chucking shank part and having at least four drilled material conveying flutes (4, 5, 6, 7) disposed next to one anoth...	09/10/1996
5382121	Drill bit for use in concrete and asphalt A drill bit for drilling holes in concrete and asphalt, or the like, includes a circular drill bit body having two helical grooves in its cylindrical side surface. Pressurized air is injected into the drilled hole through a passage system extending longit...	01/17/1995
5113626	Earth anchor apparatus having improved load bearing element An earth anchor apparatus includes a hub having a longitudinal axis and first and second axial ends, and a load-bearing helix affixed to the hub. The load-bearing helix includes a generally radially extending leading edge adjacent the first end of the hub...	05/19/1992
4924953	Rock drill A rock drill for rotary and/or percussive stress, in particular for use in percussion or hammer drilling machines, is proposed, which by its geometrical design makes improved efficiency and simplified production possible. For this purpose, the feed spiral...	05/15/1990
4696355	Drilling tools A drilling tool for percussion drilling machines is proposed which has an increased endurance strength or fatigue strength when used in percussion drilling machines having a high striking speed. For this purpose, the carbide cutting tip (11) is arranged t...	09/29/1987
4579180	Drilling bit A drilling bit having two helical withdrawal grooves which extend from the drilling head in the direction toward the insertion or chucking end. The withdrawal grooves have least slope in the vicinity of the drilling head. In the other regions, the withdra...	04/01/1986
4548281	Apparatus and method for installing well casings in the ground employing resonant sonic energy in conjunction with hydraulic pulsating jet action A well casing to be installed in the ground is resonantly driven at a sonic frequency by means of an orbiting mass oscillator. A wedging probe member is optionally attached to the end of the casing and is driven by the vibratory energy to facilitate the p...	10/22/1985
4286677	Helical impact bit for drilling stone with narrow guide lips The bit for drilling stone for use in a hammer drill or an electric hammer comprises a body defining recesses which, in axial section, have a profile at least approximately in the form of an arc of a circle with a radius of between approximately 8 mm and ...	09/01/1981
4262762	Anti-collaring structure for impact bit Rib structure for an impact type rock drilling bit, spirally oriented on the external surface of the bit to move particulate matter forwardly relative to the bit when it be turned in its normal drilling direction, to aid the process of extraction of the b...	04/21/1981
4202420	Rock drill with hard metal drilling head A rock drill for rotary blow drilling with a drilling head arranged at the free end of the drill shaft, which at least partially consists of hard metal. The drilling head the end face of which is circular disc shaped or circular ring shaped includes a for...	05/13/1980
4091884	Rotary air percussion bit A rotary air percussion bit has a cylindrically shaped sidewall, a body portion with a flat or recessed face on one end and a shank attached to the remaining end. A plurality of inserts of wear resistant material is mounted in the face and extending outwa...	05/30/1978
4047722	Hammer drilling devices In a drilling device, especially a hammer drill, a tool is coupled to a tool receiving means by co-operating male and female coupling elements which ensure uniform rotational motion of the tool in relation to the tool receiving means; additional transitio...	09/13/1977

PatentStorm

Quotables

PatentStorm News

Class 175/395 - Impact type