Expansible Patents (Class 82/169)
  • Patent number: 11298757
    Abstract: A cutter holding assembly has a holder, a cutter, and a tightening positioning assembly. The holder has a first positioning recess. The cutter is connected to the holder and has a second positioning recess. The tightening positioning assembly has a positioning block, two tightening elements, and an adjusting element. The positioning block is mounted in the first positioning recess of the holder and the second positioning recess of the cutter. The tightening elements are mounted in two opposite sides of the positioning block. The adjusting element is mounted in the positioning block at a position between the two tightening elements. The adjusting element has a conical abutting surface for pushing the tightening elements to move opposite to each other to abut the opposite side surfaces of one of the first and the second positioning recesses while axially moving. The cutter can be firmly connected to the holder.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: April 12, 2022
    Inventor: Pen-Hung Chen
  • Patent number: 8800997
    Abstract: A stepped collet includes a first section of generally hollow cylindrical shape having a first outer diameter and an inner diameter, a wall extending radially inwardly from an outboard end of the first section, and a second section of generally split cylindrical shape cantilevered from the wall and having a second outer diameter smaller than the first outer diameter.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: August 12, 2014
    Assignee: Hydra-Lock Corporation
    Inventors: Raymond L. Smith, John V. Bartolone, Dan J. O'Lear
  • Patent number: 7748718
    Abstract: An expandable mandrel for holding a part has a shank with inclined radial slots slidably engaged by keys. The keys are coordinated by a collar which engages an extension on each key. A platen affixes to the shank of the mandrel to provide a stop that will index the position of a part mounted onto the mandrel. The platen has radial key passages to allow longitudinal movement of the keys in the slots. The platen preferably has resilient indexing nubs to engage the part. Preferably, the position of the platen on the mandrel can be adjusted by a set screw engaging one of several indexing holes or engaging a longitudinal guide track. For machining in a wet environment, the slots can be provided with longitudinal rails and the keys provided with transverse channels to remove liquid from between the keys and the slots.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: July 6, 2010
    Assignee: The Gleason Works
    Inventor: Charles E. Brettell
  • Patent number: 6739600
    Abstract: A push-type expandable fixture provided to secure a work-piece to a rotatable machine. An expandable sleeve is inserted within a bore of a hollow work-piece. The work-piece together with the expandable sleeve is disposed about a pair of wedge members which are in turn secured to a first rotatable portion of the machine. The wedge members engage a corresponding tapered internal surface of the expandable sleeve. The second wedge member is longitudinally displaceable relative to the first wedge member and together extends through the work-piece to engage a second rotatable portion of the machine. As the first and second rotatable portions of the machine are brought toward one another, the wedge members act on the tapered surfaces of the sleeve forcing the sleeve to radially expand and firmly grip the work-piece. The arrangement provides the ability to firmly secure a work-piece to a rotatable machine tool by a simple push-type action without the need to induce compression forces on the work-piece.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: May 25, 2004
    Assignee: Spicer Technology, Inc.
    Inventors: Roderick Brent Dillon, Scott Allen Stucker, Trevor O'Bryan McKinney
  • Patent number: 6182349
    Abstract: A method for producing a seamless metallic belt without a welded line and capable of being easily produced in high accuracy. A seamless belt material 21 having a defined length as a whole is placed on a core 11 and is held in a stretching state on the core 11 thermally expanded by heating, and further, in the above state, an outer circumference of the belt material 21 is cut to a predetermined thickness. The seamless metallic belt 20 is obtained by removing after the core 11 is cooled.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: February 6, 2001
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Kouzaburo Matsuzawa, Atsushi Fujii, Akira Funaki
  • Patent number: 5941146
    Abstract: A work spindle for a machine tool. The work spindle has a spindle guard tube, a clamping arrangement, a clamping force generator, which is arranged on the spindle guard tube and operates the clamping arrangement, and which has at least one first cylinder chamber enclosed by a first cylinder housing and a first piston, in such a way that a large band width of different clamping forces may be generated simply. The clamping force generator has a second cylinder chamber enclosed by a second cylinder housing and a second piston. Additionally, for operation of the clamping arrangement, both cylinder chambers are always subjected to a pressurized medium. Furthermore, to generate different clamping forces, the clamping force generator is switchable over from a first working mode, in which at least the first piston operates the clamping arrangement, into a second working mode, in which at least the second piston operates the clamping arrangement.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: August 24, 1999
    Assignee: Index Werke GmbH & Co. KG Hahn & Tessky
    Inventor: Helmut Friedrich Link
  • Patent number: 5690007
    Abstract: A cutting apparatus includes a mandrel insertable in a food product container. The mandrel supports the container in a fixed position by contacting an inner surface of the container. The mandrel is locatable on a support apparatus so that as the mandrel and container are rotated on the support apparatus, the container remains in a fixed axial position. Spaced-apart cutting knives contact an outer surface of the container to cut the sample therefrom while the mandrel and container are rotated.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: November 25, 1997
    Assignee: The Pillsbury Company
    Inventors: Robert A. Strange, Debra A. Crea, Joseph G. Anton
  • Patent number: 5667228
    Abstract: A two piece mandrel having two co-operating interfitting parts (similar to a bayonet type assembly) which may be twisted apart, or twisted together by means of a series of interlocking projections having complimentary ramping surfaces. The co-operating parts have a pair of reference surfaces that assure concentricity of the two mating parts.
    Type: Grant
    Filed: June 20, 1995
    Date of Patent: September 16, 1997
    Inventor: Mario Fabris
  • Patent number: 5557999
    Abstract: A method and apparatus for manufacturing a plastic closure particularly to facilitate orientation of the closure so that a manufacturing process, such as vertical scoring, can be effected at one of at least one predetermined portion of the closure. Such orientation is achieved by the provision of an orientation mandrel on to which the closure is moved. The closure is initially rotated relative to the orientation mandrel, with a stop mechanism of the mandrel thereafter engaging the closure and stopping such relative rotation. The stop mechanism of the mandrel is configured in a predetermined orientation with respect to an associated component of the apparatus, which in the illustrated embodiment comprises a vertical scoring mechanism. By this manufacturing technique, a closure having a tamper-indicating pilfer band can be scored and cut at a particular portion of the band, such as between container-engaging projections of the pilfer band.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: September 24, 1996
    Assignee: H-C Industries, Inc.
    Inventors: David W. Smith, Ramesh Kamath
  • Patent number: 5556114
    Abstract: This invention relates to a workshop mandrel which is suitable for mounting work pieces on its cylindraceous outer surface. A cavity beneath the surface is filled with hydraulic fluid which causes the outer surface to expand when the fluid is pressurized to lock a work piece on the mandrel.
    Type: Grant
    Filed: June 20, 1995
    Date of Patent: September 17, 1996
    Inventor: Mario Fabris
  • Patent number: 5546837
    Abstract: An apparatus for supporting a ring piece being cut from a ring-shaped structure is disclosed. The ring support member or assembly includes a bar assembly having a convex arcuate surface adapted to be disposed against and aligned with an inner circumferential portion of the ring-shaped structure. In addition to the convex arcuate surface, the bar assembly has a pair of substantially parallel faces which are substantially perpendicular to the convex arcuate surface. A supporting stud extends substantially perpendicularly through the faces of the bar assembly. A first clamping assembly is attached to one end of the supporting stud to fix the bar assembly to the supporting stud. A second clamping assembly is attached to the other end of the supporting stud and is adapted to fix the bar assembly and the supporting stud to an object, such as a plate with elongated radially disposed slots.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: August 20, 1996
    Assignee: Dresser-Rand
    Inventors: Gary E. Dibble, Wallace F. Morehouse, Ralph G. Blackman
  • Patent number: 5133565
    Abstract: A collet chuck with a collet body having radially extending clamping parts with counter guiding surfaces that are cooperating with the guiding surfaces of a corresponding mandrel is provided. The guiding surfaces are formed as planar sections of the mandrel and are arranged in a common plane with the counter guiding surfaces.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: July 28, 1992
    Inventor: Claus Schmidt
  • Patent number: 5074177
    Abstract: A machine tool has a pair of rotary spindles which support opposite ends of workpiece to be machined. At least one of the spindles is driven and a ring having a plurality of arms is coaxially secured to this spindle for rotation therewith. The arms entrain an annular member which is essentially coaxial with the spindles and is provided with threads. An annular guide plate which is again essentially coaxial with the spindles supports a plurality of clamping jaws for movement radially of the spindles. The clamping jaws are provided with threads which mesh with the threads of the annular member so that rotation of the latter can cause movement of the clamping jaws. A plurality of rocker arms is mounted on the machine tool for pivotal movement between an inoperative position and an operative position in which the rocker arms engage the periphery of the guide plate to prevent rotation thereof.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: December 24, 1991
    Assignee: Georg Karstens Fabrik fur Messgerate und Spezialmaschinen GmbH
    Inventor: Manfred Schmidt
  • Patent number: 4862777
    Abstract: Apparatus is described for machining the exterior peripheral surface of piston rings for internal combustion engines, particularly piston rings having a transverse shape other than circular, for example, oval or elliptical. A jig arrangement usable with the apparatus is adapted to temporarily deform the workpieces in order to produce exterior surfaces having a conical taper.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: September 5, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shigeo Sakurai, Masayuki Onimaru
  • Patent number: 4813313
    Abstract: The invention relates to an apparatus for demolishing a reactor shield wall. The apparatus has a pillar (2) extending from the top side of the reactor toward the bottom of the reactor, an upper support device (3) for supporting the upper portion of the pillar (2) at the top side of the reactor, and cutting devices (5, 6) mounted to the pillar so as to be upwardly and downwardly movable along the pillar (2). The pillar (2) is rotatably supported by the support device (3). The upper support device (3) has drive devices (30, 31, 32) for rotating the pillar (2). The cutting devices (5, 6) are caused to swing in the reactor interior by rotating the pillar (2). The drive devices are disposed at the top side of the reactor, and this permits easy maintenance and inspection.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: March 21, 1989
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Shimizu Kensetsu Kabushiki Kaisha
    Inventors: Makoto Ichikawa, Kaneo Takahashi, Mitsuo Tokomoto, Hironori Zaita, Kazunori Kooyama, Kashiro Ureshino, Katsuhiko Yoshida
  • Patent number: 4811639
    Abstract: An attachment is disclosed for use with a power driven threading machine of the character having a tubular workpiece receiving spindle carrying jaw assemblies which engage and disengage a workpiece in the spindle. During a threading operation, the jaws engage a workpiece and thereafter rotate the workpiece and spindle in one direction about the spindle axis. When the jaws are displaced to release the workpiece, the jaws and spindle are rotated in the opposite direction about the spindle axis. The disclosed attachment is adapted to be received in the threading machine spindle in place of a workpiece to provide a driving coupling such as for an auxiliary tool assembly supported on the threading machine.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: March 14, 1989
    Assignee: Emerson Electric Co.
    Inventors: Paul W. Gress, Paul E. Wesebaum