Patents Examined by Mark F. Frazier
  • Patent number: 4941294
    Abstract: The disclosure relates to a grinding machine which, in the production of toothed belts, grinds the back surface of a molded and vulcanized cylindrical belt material (also called a slab) to finish the belt material thickness to the specified dimension before the belt material is cut into belts of a desired width. The grinding machine includes a rotary support wherein a belt material to be ground is held between a work roll having a large diameter and an idler shaft having a smaller diameter, and is arranged to face a grinding belt over the contact wheel of a belt grinder in such a way that they may be brought towards and away from each other.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: July 17, 1990
    Assignee: Bando Kagaku Kabushiki Kaisha
    Inventor: Toshio Nakagaki
  • Patent number: 4939871
    Abstract: A centrifugal processing machine for the merchanical processing, for example, grinding, polishing, cleaning and de-burring of workpieces, with a container serving to accommodate the work-pieces and processing agents. The container comprises a substantially cylindrical casing and a rotating bottom, in the form of a plate or similar dished structure, mounted coaxially with the casing. The peripheral edge of the bottom projects towards the cylindrical casing and forms a narrow gap. For adjusting automatically the width of the gap around the entire periphery of the container, as a function of a given or varying gap-width, the casing is adapted to be raised and lowered in relation to the bottom. This is accomplished by means of a measuring device, which measures the width of the gap, and by means of a device for raising and lowering the casing which is adapted to be controlled by the measuring device in such a manner that the width of the gap is adjusted to a specific value and is held at this value.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: July 10, 1990
    Assignee: Max Spaleck GmbH & Co.
    Inventor: Friedhold Ditscherlein
  • Patent number: 4937947
    Abstract: An apparatus is disclosed to rotate a gear shaft about a reference axis and to position rolling path support elements such that their centers coincide with a reference axis. Once the rolling path elements have been centered and adjusted to compensate for any offset or warp they are fixedly attached to the gear shaft and serve to accurately support the shaft in a grinding or machining device which forms internal centering chamfers. Once the centering chamfers have been formed, they may be used to support the device during its final machining. A computer is included in the apparatus and is operatively connected to rotating and feeler devices. The computer is also operatively connected to a display screen which displays a sequence of events enabling the operator to adjust the positions of the rolling path elements. The display screen may include infrared heat sensitive areas to enable the operator to input data into the computer and control the operation of the apparatus.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: July 3, 1990
    Assignee: Societe Anonyme Dite Hispano-Suiza
    Inventors: Camille M. Catterlain, Francis Girard, Gaston H. Reide
  • Patent number: 4936054
    Abstract: An improved of processing a tire on a uniformity machine comprising the steps of sensing the radial force variations in a tire and generating a composite waveform corresponding to the sensed force variations, converting the composite waveform into a special function waveform selected from the class of waveforms which includes filtered partial square waves, partial sine waves and full sine waves, selecting either from a table or adaptively one of the special function waveforms and grinding of the tire in response to the selected special function waveform.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: June 26, 1990
    Assignee: The Uniroyal Goodrich Tire Company
    Inventors: Clarence L. Rogers, Farhad Tabaddor
  • Patent number: 4934102
    Abstract: A polishing tool for abrasively polishing a semiconductor wafer that edge clamps the wafer between two rollers. The wafer is spun-up in one plane and the rollers spin in a second plane which is orthogonal to the wafer spin plane. One of the rollers is split with each section rotating in opposite directions. Each of the rollers is mounted by a spring-gimballed assembly to follow the wafer contour.
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: June 19, 1990
    Assignee: International Business Machines Corporation
    Inventors: Michael A. Leach, James K. Paulsen, Brian J. Machesney, Daniel J. Venditti, Christopher R. Whitaker
  • Patent number: 4934878
    Abstract: A center cutting end mill incorporating indexable inserts with positive axial rake angles. Multisegmented rake faces provide support for positive rake cutting edges enabling an improved feed rate.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: June 19, 1990
    Assignee: GTE Valenite Corporation
    Inventors: Lawrence Plutschuck, Thomas Conrad
  • Patent number: 4934880
    Abstract: An improved end mill and method of manufacture with an enhanced number of effective teeth. A unique segmented insert configuration maintains a positive axial rake in a negative rake seating face.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: June 19, 1990
    Assignee: GTE Valenite Corporation
    Inventor: Daniel R. Stashko
  • Patent number: 4934224
    Abstract: The present invention relates to a system for monitoring tension of a peeled strip during threading of the strip onto a coil wrapping assembly. Sensors mounted on the coiler assembly monitor strip tension during threading such that a break in the strip triggers shutdown of the machine including withdrawal of the cutting tool from the billet to prevent damage to the tool.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: June 19, 1990
    Assignee: The Gillette Company
    Inventor: Robert L. Brown
  • Patent number: 4932162
    Abstract: A method and apparatus has been disclosed for grinding contour punch parts. The apparatus is capable of movement on six axes. The main features of the invention include stopping rotation of the part when a flat surface is desired to be ground on the part and moving it directly vertically upwardly with respect to the grinding wheel, thus forming a smooth flat surface on the part. The part is moved on three axes, laterally, horizontally and vertically with respect to the grinding wheel. In addition, a dressing apparatus, movable on two axes, is disposed behind the grinding wheel and maintains a desired surface upon the grinding wheel. The dressing surface may form a ramp surface on the grinding wheel that will create a ramp surface on the finished part.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: June 12, 1990
    Inventor: Anthony Palazzola
  • Patent number: 4930945
    Abstract: An insert rotary cutter includes a cutter body having a forward end face and at least one first cutter insert releasably attached to the cutter body. The first cutter insert is of a generally triangular shape including a front face having three marginal ridges and three corner ridges. Each marginal ridge is comprised of first, second and third ridge portions. The insert has three main cutting edges each defined by a respective first ridge portion, three auxiliary cutting edges each defined by a respective third ridge portion, three corner cutting edges each defined by a respective corner ridge, and three relief cutting edges each defined by a respective second ridge portion. One of the corner cutting edges and the main and auxiliary cutting edges which intersect the corner cutting edge are indexed in active cutting position. The indexed main cutting edge extends generally axially from the body while the indexed auxiliary cutting edge extends slightly beyond the forward end face.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: June 5, 1990
    Assignee: Mitsubishi Metal Corporation
    Inventors: Tatsuo Arai, Takayoshi Saito, Osamu Tsujimura, Hiroaki Hayashizaki
  • Patent number: 4928436
    Abstract: The object of the invention relates to a device for sharpening knives, comprising a freely rotatably mounted grinding element (6) consisting of two truncated cones turned against each other. In known devices of this kind, one side of the knife blade (17) remains unground at the free end and handle end of the blade. This can be avoided, if the grinding element (6) can turn around one end (11) of its axle (10) in such a way that the axle forms an angle with respect to the sharpening direction of the knife, which angle is smaller or larger than in the end positions of the axle.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: May 29, 1990
    Assignee: Fiskars Oy Ab
    Inventor: Olavi Linden
  • Patent number: 4926602
    Abstract: A belt sanding apparatus has an endless abrasive belt trained over both a drive and a driven roll for finishing a workpiece, the rolls being mounted on the apparatus frame for rotation about fixed upstanding axes. A side and/or end workpiece support table is mounted on the frame for four-way adjustment relative to the belt. An elongated support bracket plate is provided for mounting each table to the frame for pivotal movement about a transverse tilt axis. Guide rods on the table engage the bracket plate for vertical sliding movement and for effecting pivotal movement of the table about the transverse tilt axis. A turnscrew or the like is provided on the bracket for vertically moving the table relative to the belt, the table being connected to the guide rods for moving the table both along a horizontal plane toward and away from the belt and about a longitudinal roll axis, such that the table is capable of vertical, horizontal, tilt and roll adjustments relative to the belt.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: May 22, 1990
    Inventor: Robert H. Crouch
  • Patent number: 4910921
    Abstract: A rotary edge assembly for finishing the circumferential edge of a shell-like workpiece is adapted for incorporation into an eyelet punch-type press work station. A pair of rollers are diametrically positionable for rotation about a work axis. The press head moves the rollers into an engaging operational relationship with a workpiece for rotation along the edge. An adjustment knob is threaded to a saddle member for adjusting the position of the rollers for a given workpiece.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: March 27, 1990
    Inventors: Roger J. Herbert, Thomas M. Aurio, Alfred F. Stanco
  • Patent number: 4908991
    Abstract: The machine for grinding ophthalmic glasses comprises a housing (1) open in its upper part and housing a grinding wheel (7) driven in rotation on a first horizontal shaft (6), a U-shaped carriage (13) pivotally mounted on a second horizontal shaft (11) and located above and at the rear of the first horizontal shaft (6) and carrying between the wings of the carriage a shaft (14) in two parts which clamp therebetween a work piece (15) to be machined, the carriage being movable about and along the second shaft. The machine further comprises a hood (2) having a pivotal upper panel (5) and mounted in the housing (1) to be pivotable between an upper closing position and a lower opening position, a motor (20) for driving the hood, and a first device (26, 27) and a second device (24, 25) for raising the carriage and the panel respectively when the hood moves from its upper position to its lower position.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: March 20, 1990
    Assignee: Briot International
    Inventors: Raynald G. M. Longuet, Jean-Pierre M. F. Langlois
  • Patent number: 4905426
    Abstract: A mobile self-propelled apparatus for automatically progressively sandblasting over a surface, of the type having a platform upon which is mounted a swinging boom arm having a head at the end thereof to support a sandblasting nozzle. The swinging boom arm is mounted on a drive wheel driven by a first pneumatic cylinder for movement about the axis of the arm. A second pneumatic cylinder operates to cause the platform to move a predetermined distance on a supporting surface. Pneumatic control means are associated with the first and second pneumatic cylinder means so that the swinging of the arm is synchronized as desired with the movement of the platform.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: March 6, 1990
    Assignee: David Robinson
    Inventors: David Robinson, Tom L. Falkiner