Yieldable Tool Patents (Class 407/8)
  • Patent number: 8151672
    Abstract: A groove cutting assembly comprising a cutter housing, a cutter assembly with a cutting edge, and the cutter assembly being accommodated by the cutter housing, and a drive mechanism, coupled to the cutter assembly, for indexing the cutter assembly one of radially inward and radially outward relative to the cutter housing upon rotation of the cutter assembly past an indexing member. The drive mechanism comprises a barrel assembly, engaged with the cutter assembly, and a feed member which threadedly engages with the barrel assembly. Rotation of the feed member, in a first rotational direction, indexes the cutter assembly radially outwardly away from the cutter housing, while rotation of the feed member, in an opposite rotational direction, indexes the cutter assembly radially inwardly toward the cutter housing.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: April 10, 2012
    Inventor: Thomas Esslinger
  • Patent number: 7510589
    Abstract: A method for producing metal fibers includes a machining production method using at least one rotating tool. A device for producing metal fibers, a filter material having such fibers, a method for producing the material, a particle filter using such material, a motor vehicle equipped with the filter, and a fiber, are also provided.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: March 31, 2009
    Assignee: Emitec Gesellschaft Fuer Emissions-technologie mbH
    Inventors: Rolf Brück, Jan Hodgson, Thomas Härig, Peter Hirth
  • Patent number: 7134622
    Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool (12) which is rotatable on an axis of rotation and is in the form of, for example a drum, disc or truncated conical body, which supports a plurality of such chipper knives. The chipper knife comprises at least one cutting edge (1) which is formed between a flank (2, 2?) and a chip guiding surface (4, 4?), and two opposite main surfaces (3, 3?) which are adapted to abut against and be retained on the opposite seats (14, 15) of a holder (9, 10) on the tool. At least one main surface (3, 3?) of the chipper knife which is located on a wood side of the chipper knife comprises a cross-sectionally convexly bent surface portion (6, 5?) which connects to and extends backwards from the flank (2, 2?) and the chord of which constitutes at least 20%, preferably at least 30% and, most preferably, at least 40% of the total cross-sectional length of the chipper knife. The invention also relates to a holder for such a chipper knife.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: November 14, 2006
    Assignee: Iggesund Tools AB
    Inventors: Sven-Olof Biller, Olov Granstrōm, Mats Engell
  • Patent number: 5682803
    Abstract: A cutting tool assembly comprising a tool holder formed with an insert retaining pocket having a pocket base wall and in which is releasably mounted a cutting insert and a shim. The cutting insert is of a substantially prismatic shape having an upper surface, a lower surface and side relief flank surfaces and at least one cutting corner defined therebetween and presenting at least one cutting edge formed by the intersection of the upper surface and a corresponding number of the side relief surfaces adjacent thereto.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: November 4, 1997
    Assignee: Iscar Ltd.
    Inventor: Gideon Boianjiu
  • Patent number: 5598756
    Abstract: A device for stopping automatically an overloaded lathe comprises a support base, a front holding base, a rear holding base eccentric cam, a locating block, and a lathe tool. The front holding base is fastened with the front end of the support base by means of a screw which is fitted over by a resilient washer. The lathe tool has a handle which is fastened at the front end thereof with the front holding base. The rear holding base eccentric cam is fastened with the rear end of the support base by means of a screw which is fitted over by a resilient washer. The handle of the lathe tool is urged at the rear end thereof by the rear holding base eccentric cam. The locating block is fastened with the support base and is provided with a proximity switch having an electric circuit connected with the electric circuit of the main shaft motor of the lathe. The rear end of the handle of the lathe tool is urged by the locating block.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: February 4, 1997
    Inventor: Chin-Long Wu
  • Patent number: 5297905
    Abstract: A tool for processing holes has a shaft which can be clamped in a drive element for executing a forward stroke into a working position within a hole, a return stroke, and an at least rotating working motion of the tool, two support elements arranged on the shaft, wires clamped at one end of the shaft between the support elements and being sprung bowing away from the shaft in an arc shape, the wires being coated with a cutting medium. One of the support elements is axially adjustable relative to the shaft. The shaft has axially positioned slots distributed on a circumference in two regions axially offset from one another. The shaft also has an axial hole leading out from both ends of the shaft and extending into the regions. The support elements are formed as limit stops inserted in the axial hole and each end just short of an entry of the hole into an area of the slots. The wires have ends extending through the slots and coming to rest on the limit stops.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: March 29, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Hermann Schmidt, Dieter Aulich, Peter Essig
  • Patent number: 5193945
    Abstract: A cutting tool having a positioning block inserted between the cutting insert and the insert-receiving seat is disclosed. The disclosed cutting tool demonstrates excellent resistance to damage by severe vibration caused by the milling process. The cutting tool of the present invention comprises (a) a tool body having a recess formed at a forward end thereof and defining a insert-receiving seat; (b) a cutting insert; (c) a positioning block to be placed between the cutting insert and said insert-receiving seat, having a top and bottom faces and having a hardness thereof which is lower than that of a surface of an insert-receiving seat; and (d) clamp means for securing the cutting insert and the positioning block on the insert-receiving seat. The above described positioning block is able to absorb some extent of vibration of the cutting insert during the milling process. According to the present invention, there is also provided the cutting tool in which a positioning block has two layers.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: March 16, 1993
    Assignee: Mitsubishi Materials Corporation
    Inventors: Masaaki Nakayama, Masayuki Okawa, Junichi Saito
  • Patent number: 5158405
    Abstract: A deburring tool is constructed of a pair of wire sections resiliently interconnected with each other so that each biases the other against the internal side walls of a bore formed in a workpiece. Abrasive material is provided on either or both of the sections, and rotation of the tool about its longitudinal axis causes engagement of the abrasive material with the area of the bore wall at which burrs are to be removed. The tool can be formed of a single length of wire having a curved portion on which the abrasive material is located, or the tool can assume various other configurations. The single wire version can be used to remove burrs from the interior of very small bores.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: October 27, 1992
    Inventor: John Serafin
  • Patent number: 4826367
    Abstract: A cutting tool assembly of the type including a pilot holder and a cutter blade received in a transverse through slot in the pilot holder. The cutter blade is mounted in the transverse slot in the pilot holder in a manner to allow ready replacement of the pilot blade and in a manner to allow the cutter blade to self-align with respect to the central axis of the pilot holder to minimize the stress loading in the cutter blade and minimize blade breakage. In one embodiment, the cutter blade is mounted in the pilot holder by a cartridge which is received in a threaded bore in the pilot portion of the pilot holder and which includes a spring biased pin projecting upwardly into the transverse slot in the pilot holder. In another embodiment, the cutter blade is mounted in the transverse slot in the pilot holder by a pin and slot connection provided by a slot in the blade and a pin passing through the pilot holder.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: May 2, 1989
    Assignee: Michigan Drill Corporation
    Inventor: Richard Kandarian
  • Patent number: 4542943
    Abstract: There is disclosed a base and block assembly for use with an earthworking bit. The assembly comprises a base and a block engaged in the base. The block has a shank portion and a toolholder portion extending from a first end of the shank and adapted for receiving the earthworking bit. The assembly also comprises means for causing the block to preferentially fail when exposed to abnormally high cutting loads. Also disclosed is a method for protecting the base of a base and block assembly when in use with an earthworking bit. The method comprises preferentially weakening the block so as to cause the block to fail when exposed to abnormally high cutting loads and engaging the block with the base.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: September 24, 1985
    Assignee: Kennametal Inc.
    Inventor: Robert H. Montgomery, Jr.
  • Patent number: 4447181
    Abstract: A tool holder (10) for mounting a tool T to a carrier (11), base member (12) and a tool holding member (13) secured together to form the tool holder unit. Confronting surfaces (19,20) of the tool holder members are disposed in facial engagement about the periphery of a recess (21) receiving a resilient pad (22). The compressed pad provides an antivibration, antichattering effect in the use of the tool holder.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: May 8, 1984
    Assignee: Ikegai Tekko Kabushiki Kaisha
    Inventor: Toshitake Asano
  • Patent number: 4304160
    Abstract: A spring actuated, pivoting cutting tool, which is used in conjunction with turning equipment and which at the termination of its cutting stroke automatically lifts the cutting edge off the finished surface to allow the tool to be withdrawn without leaving a return mark, is provided with a spring actuated, slidable shield which substantially covers any gap between the moving parts of the cutting tool, thus reducing the likelihood of chips or other debris from lodging between the moving parts of the tool and preventing its proper operation.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: December 8, 1981
    Assignee: Barr-Don, Inc.
    Inventor: Milford W. Nelson