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Patent No. 6718554

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Class 299/107 - Having a spring biased retainer


Subclass of Class 299 - Mining or in situ disintegration of hard material
Definition: Rolling or rotatable type bit mount in which the connection
No. of patents: 101
Last issue date: 08/16/2011


1      
NumberTitleIssue Date
7997660Hybrid retainer sleeve for tool inserted into block
A sleeve utilizing two methods of retention—a friction fit and a rear retention feature—is disclosed. The sleeve includes a circumferentially compressible portion that provides a friction fit when inserted into a bore and includes a projected portion around an e...
08/16/2011
7950745Streamlining bit assemblies for road milling, mining and trenching equipment
An improved bit assembly for road milling, mining, and trenching equipment includes a streamlined tip assembly that is a combination of conical and cylindrical in shape and devoid of protrusions or annular indentations that might impede the flow of removed material ...
05/31/2011
7926883Spring loaded pick
In one aspect of the invention, an apparatus for degrading natural and man-made formations includes a pick with an axially spring loaded pick comprising a central axis and being attached to a holder secured to a driving mechanism. The pick comprising a steel body wi...
04/19/2011
7922256Circular-shank tool comprising a tool holder
A circular-shank tool including a shank held in a bore of a tool holder by a locking sleeve, the shank being rotatably held in the locking sleeve. The locking sleeve has one or more retaining elements that project inwards and engage in a peripheral groove in the sha...
04/12/2011
7922257Circular-shank tool comprising a tool holder
A circular-shank tool including a tool holder for improving the centering of the shank of the circular-shank tool in the locking sleeve by a configuration of the retaining elements and to improve an ability of the shank to rotate in the sleeve. To achieve this, the ...
04/12/2011
7789468Bit holder usable in bit blocks having either of a cylindrical or non-locking taper bore
A bit holder for use in a bit assembly in road milling, mining and trenching equipment has a hollow generally cylindrical shank and first and second elongate slots positioned in spaced axial relation through the shank. The first slot extends along the shank to the d...
09/07/2010
7419224Sleeve in a degradation assembly
In one aspect of the invention, a degradation assembly has an attack tool with a body and a shank, the body having a wear-resistant tip. The shank is disposed within a bore of a holder which is secured to a driving mechanism. A retainer sleeve is disposed around the...
09/02/2008
7413256Washer for a degradation assembly
In one aspect of the invention, a degradation assembly has an attack tool with a body and a shank, the body having a wear-resistant tip. The shank is disposed within a bore of a holder secured to a driving mechanism. A washer is positioned in-between the attack tool...
08/19/2008
7410221Retainer sleeve in a degradation assembly
A degradation assembly has an attack tool with a body and a shank. The body has a wear resistant tip with a hardness of at least 60 HRc. The shank is disposed within a bore of a holder secured to a driving mechanism. A retainer sleeve is disposed around the shank of...
08/12/2008
7380889Tool retainer
A retainer system for a cutting tool that has an elongated shank. In one embodiment, the retainer system includes a tool holder block that has a sleeve-receiving hole therethrough for receiving a sleeve therein. The sleeve may have a shank-receiving hole and at leas...
06/03/2008
7367412Collapsible rock head
A rock head for use with an auger borer to bore a passageway through a body of soil and rock and simultaneously laying a pipe in that bored passageway. The rock head has a base connectable to the leading end of the auger. A plurality of movable mounts are provided o...
05/06/2008
7357200Earth auger
An earth auger presents a shank having a spiral earth removing structure therearound. The structure first presents a series of spirally positioned housings with cutting teeth therein followed by a spiral cutting edge about the shank. The teeth are radially, vertical...
04/15/2008
7343947Retainer for a rotatable tool
The cylindrical shank of a rotatable tool is retained in the cylindrical bore of a tool holder by a retainer that engages an annular groove on a portion of the shank of the tool that extends outward of the rear surface of the tool holder. The tool has an axial bore ...
03/18/2008
7338135Holder for a degradation assembly
In one aspect of the invention, a degradation assembly has an attack tool with a body and a shank, the body having a wear-resistant tip. The shank is disposed within a bore of a holder secured to a driving mechanism. The bore of the holder comprises an inner surface...
03/04/2008
7320581Stabilized filament drawing device for a meltspinning apparatus
A stabilized filament drawing device for a meltspinning apparatus. The stabilized filament drawing device applies a high-velocity flow of air to attenuate the filaments, which are discharged from a device outlet in a discharge direction. The filament drawing device ...
01/22/2008
7300114Cutting tool wear sleeves and retention apparatuses
Cutting tool assemblies and wear and retention sleeves. The assemblies may include a support block that has a sleeve-receiving hole therethrough and a cutting tool that has an elongated shank. Various configurations of sleeves are disclosed for supporting the elonga...
11/27/2007
7300115Chisel holder
A chisel holder for a road milling machine or the like, having a base element which supports a holding neck, wherein the holding neck has a chisel receiver and a protrusion is connected to the base element upstream of the holding neck when viewed in an advancing dir...
11/27/2007
7278692Bit block with shroud protector
A bit block for use in excavation and mining. The bit block is adapted to receive a bit and to be welded to equipment utilized for boring, drilling, trenching and mining. The bit block is designed to secure and protect the bit while it is penetrating rock and harden...
10/09/2007
7270379Tool holder block and sleeve retained therein by interference fit
A hollow sleeve is mounted in a hole of a holder block to receive a rotary cutter bit. The sleeve includes a front flange and a shank extending rearwardly from the front flange and defining a longitudinal axis. The shank includes an outer periphery having a radially...
09/18/2007
7229136Non-rotatable wear ring and retainer sleeve for a rotatable tool
A compressible sleeve for fitting around the shank of a rotatable tool has a cut out portion at the forward end thereof. The sleeve is compressed to a diameter less than the inner diameter of the bore of a tool holder by an annular wear ring having a generally cylin...
06/12/2007
7210745Retainer for cutting bit
A retainer for use in conjunction with a cutting bit wherein the cutting bit includes a shank that contains a recess therein. The retainer includes a generally cylindrical retainer body that has opposite ends and a central longitudinal axis. The retainer body has a ...
05/01/2007
7210744Manually replaceable protective wear sleeve
The wear sleeve in the present invention comprises a rearward split ring portion and an intermediate cylindrical ring portion adjacent a forward shoulder portion. The outer diameter of the wear sleeve intermediate portion and rearward split ring portion is uniform. ...
05/01/2007
7195321Wear ring for a rotatable tool
A tool has a tapered forward cutting end behind which is a cylindrical shank. A rearwardly facing annular flange separates the forward cutting end from the shank. The shank is received in a tool holder having a planar forward surface, and fitted around the shank of ...
03/27/2007
7192095Support base for toolholder of a milling drum
A support base (1) which is to be mounted to the surface (2) of a milling drum (3) defining a direction of rotation (31) includes a recess (4) adapted to receive removably a shank portion (14; 21) of a body (5; 7) to ...
03/20/2007
7168501Rotor system for ground milling or mine milling
A rotor system for ground milling or mine milling comprising a base rotor provided with a number of support plates for accommodating tools. The tool support plates are detachably joined to the base rotor in the rotor system. A number of segments are radially arrange...
01/30/2007
7150505Retainer sleeve and wear ring for a rotatable tool
A rotatable tool has a cylindrical shank and a compressible sleeve fitted thereon to retain the shank in the bore of a tool holder. A wear ring is positioned behind the forward cutting end of the tool and against the forward surface of the tool holder. The compressi...
12/19/2006
7118181Cutting tool wear sleeves and retention apparatuses
Cutting tool assemblies and wear and retention sleeves. The assemblies may include a support block that has a sleeve-receiving hole therethrough and a cutting tool that has an elongated shank. Various configurations of sleeves are disclosed for supporting the elonga...
10/10/2006
7097258Streamlining bit assemblies for road milling, mining and trenching equipment
An improved bit assembly for road milling, mining, and trenching equipment includes a streamlined tip assembly that is a combination of conical and cylindrical in shape and devoid of protrusions or annular indentations that might impede the flow of removed material ...
08/29/2006
6994404Rotatable tool assembly
A tool assembly includes an axially symmetric tool having a tapered forward end, a radial flange, and a cylindrical shank. A retainer is fitted around the cylindrical shank, a washer is fitted around the retainer, and an O-ring is fitted over the retainer behind the...
02/07/2006
6986552Hardened rotary cutting tip
An insert for a cutting tool has a conical cutting tip, and axially behind the cutting tip is a mid-section. Behind the mid-section is a cylindrical base. Where the insert is for use on a tool of a milling machine, the base has a diameter of at least 0.800 inch so a...
01/17/2006
6966611Rotatable tool assembly
A tool assembly includes an axially symmetric tool having a tapered forward end, a radial flange, and a cylindrical shank. A retainer is fitted around the cylindrical shank, a washer is fitted around the retainer, and an annular elastomeric member is bonded to the i...
11/22/2005
6953300Combining device for suspending object
A combining device capable of being embedded into an object comprises: an embedding unit having a first end to be embedded into an embedded object and a second end having an elastic buckling means; a hollow coupling unit having an inner surface which is formed as a ...
10/11/2005
6863352Rotatable tool assembly
A tool assembly includes an axially symmetric tool having a tapered forward end, a radial flange, and a cylindrical shank. A retainer is fitted around the cylindrical shank, a washer is fitted around the retainer, and an O-ring is fitted over the retainer behind the...
03/08/2005
6851758Rotatable bit having a resilient retainer sleeve with clearance
A drilling bit for use in conjunction with a holder that has a bore wherein the drilling bit has a drilling bit body that has an axial forward end and an axial rearward end. The drilling bit body further includes a reduced diameter portion adjacent to the axial rear...
02/08/2005
6786557Protective wear sleeve having tapered lock and retainer
A cutting tool assembly including a protective wear sleeve that is fixed in the cavity of a bit holder by a tapered wedge portion that is compressed in a correspondingly tapered portion of the bit holder cavity and an accompanying retainer both combine affix the wea...
09/07/2004
6742735Tool body and method of manufacture
A tool body is cold formed by inserting a blank into a die which defines a portion of the outer surface of the tool body after which a punch applies an impact to the blank causing the outer surface of the blank to conform to the contour of the die. The completed too...
06/01/2004
6702393Rotatable cutting bit and retainer sleeve therefor
A cutting assembly includes a holder and a cutting tool body mounted in a bore of the holder, and a retainer sleeve for retaining the tool body axially within the bore while permitting the tool body to rotate freely about a longitudinal axis thereof. The ...
03/09/2004
6623084Mounting of a rotatable chisel in mining machinery
A chisel arrangement for mining machines includes a rotatable chisel including a working part, a supporting flange arranged adjacent to the working part, and a shaft arranged adjacent the supporting flange, the shaft having a lug and an end flange at an a...
09/23/2003
6619757Tool for a street milling, coal-cutting or mining machine
A tool for a street milling, coal-cutting mining machine or the like which includes a chisel with a chisel head and a chisel stem. The chisel stem is rotatably mounted in a receiver of a chisel holder. A perforated wearing protection element is mounted on...
09/16/2003
6585326Bit holders and bit blocks for road milling, mining and trenching equipment
An improved bit holder with its mating bit block is disclosed utilizing a slight taper in the bit block bore, and a tapered shank on the bit holder that includes a second larger diameter tapered distal segment that combines with an axially oriented slot t...
07/01/2003
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