Patents Examined by Harold D. Whitehead
  • Patent number: 4829714
    Abstract: A deburring and cleaning maching and process for cleaning and deburring both interior and exterior portions of articles. The process includes mounting the article to be cleaned and deburred in a mounting means and then imparting vibratory movement to an exciter member. A vibration conduction means transfers the vibrations directly to the mounting means. Abrasive media is cascaded over, around, and through the article as it is vibrated within the substantially open space in a framework. The machine utilizes a substantially open framework. A mounting means is positioned within the framework. An exciter member is operatively connected to a vibratory means. A vibration conduction means transfers vibration from the exciter plate directly to the mounting plate. A cascading means is positioned above the fixture to direction abrasive media upon any article to the fixture as it is vibrated.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: May 16, 1989
    Assignee: Iowa Engineered Processes, Corp.
    Inventors: Brian E. Crouch, Maurice P. Roach
  • Patent number: 4756298
    Abstract: The drive motor (1) drives a machining tool (2) which can be fed forwardly by means of a feed motor (3). Both motors (1, 3) are supplied with pressure fluid by the same hydraulic pump (4). A quantitative divider valve (5) divides the oil flow coming from the hydraulic pump, a control valve (24) controlling the flow of pressure fluid in the forward feed motor in such a way that the power output at the forward feed motor falls with increasing resistance at the machining tool, thereby providing for output-regulated operation of the machining tool. In the same way as the forward feed movement, the feed movement in respect of depth of the machining tool can also be produced by way of a depth feed motor (7).
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: July 12, 1988
    Assignee: Fritz Haug AG
    Inventor: Ulf Spiegelberg
  • Patent number: 4756126
    Abstract: The machining of mechanical pieces in a grinding machine is controlled depending on in-process and post-process measurements of the pieces. The post-process measurement is carried out by using the same in-process measurement means, with the provision of different zero references for the two types of measurements.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: July 12, 1988
    Assignee: Marposs Societa' Per Azioni
    Inventor: Mario Pozzetti
  • Patent number: 4754576
    Abstract: A grinding device for grinding the ends of fibres and particularly optical fibres comprises a stand 10 carrying a mounting arrangement 13 for mounting a fibre and rotating it about its longitudinal axis. The stand 10 also carries a grinding wheel 18 and a microscope 22. The positions of the microscope 22 and mounting arrangement are all accurately controllable by micrometers 12, 23, 25 and 27.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: July 5, 1988
    Assignee: The General Electric Company, p.l.c.
    Inventors: William J. Liddell, Alan E. Green, Cyril W. Coe
  • Patent number: 4753046
    Abstract: The process allows to treat parts by agitation in a rotary vat having no movable closure member. A machine using such process comprises a rotary vat (101) rotating about a horizontal axis, provided with an axially arranged inlet opening (112), a discharge orifice (115) situated at the periphery of the vat, and a helical baffle (122) for causing a longitudinal displacement of the parts in the treatment chamber (121) of the vat. The vat may be filled during its rotation. It is simply emptied by reversing the rotational direction. The machines of this kind are particularly appropriate for the clipping and the snagging of metal or synthetic castings or for the deburring, degreasing and drying of metal parts.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: June 28, 1988
    Inventor: Michel Thonney
  • Patent number: 4753044
    Abstract: The present invention relates to a machine for finishing cast or machined parts comprising a closed enclosure (10) containing at least one finishing unit (14, 16) adapted to be a unit of smoothing of rough edges, of brushing, of rubbing, of polishing or of grinding and a manipulator robot (13) of the hanging type comprising a moveable arm (24) for bringing the parts in contact with the finishing tools. Aspiration elements (30, 31) are associated with each finishing unit. The finishing units are equipped with a compensation apparatus of their wear.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: June 28, 1988
    Assignee: Bula & Fils S.A.
    Inventor: Bernard Bula
  • Patent number: 4753048
    Abstract: There is disclosed a method of and apparatus for improving surface finishing and accuracy in a grinding operation employing a manipulator such as a robot which is coupled to a rotary grinding tool. The method comprises reducing the coupling effects between the tool motion whick is tangential to a workpiece surface and tool motion which is normal to the surface to obtain the optimum performance. The method involves adding compliance to the grinding tool in the tangential direction while maintaining higher stiffness in the normal direction. A robot is disclosed which is made in accordance with the method.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: June 28, 1988
    Assignee: Massachusetts Institute of Technology
    Inventors: Haruhiko Asada, Neil Goldfine
  • Patent number: 4751797
    Abstract: An abrasive sheet or polishing sheet containing an abrasive layer divided into discrete blocks by a network of grooves. The polishing sheet is prepared by making a slurry of abrasive particles and a resin adhesive agent of low density and viscosity, spreading it on a base and heating the resulting sheet from below the base.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: June 21, 1988
    Assignee: Hi-Control Limited
    Inventor: Akira Fujimori
  • Patent number: 4750298
    Abstract: A method and a device for controlling a drive of successively operated grinding disks which are made of different compositions. The condition, for example metallic inclusions or the like, in each individual grinding disk is scanned by means of a sensor the signal of which is fed to a signal transmitter and stored in a storage connected to the drive of the grinding disks, which is thereby controlled.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: June 14, 1988
    Assignee: Ernst Winter & Sohn (GmbH & Co)
    Inventor: Hans-Robert Meyer
  • Patent number: 4750468
    Abstract: The invention relates to a machine for cutting blocks of stone with a diamond wire. Electronic devices detect the diamond wire tension as a function of the power absorbed by the motor and driving it correspondingly control the withdrawal of the machine, as the cutting operation goes ahead, with a view to keeping said tension constant.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: June 14, 1988
    Inventor: Bruno Micheletti
  • Patent number: 4748773
    Abstract: A grinding assembly for grinding an object such as a printed circuit board coupon at a predetermined angle and to a predetermined grinding depth, including a control board carrying a grinding guide having at least two conductive leads and a conductive control track interconnecting the conductive leads, and a shelf having an upper surface for supporting the object. The shelf is positioned relative to the control board to establish a grinding surface for the object biased at the predetermined angle. The shelf is further positioned to align the predetermined grinding depth of the object with a portion of the rear edge of the control track so that the track is ground through when the object is ground along the biased grinding surface to the predetermined grinding depth.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: June 7, 1988
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Thomas F. Dawson, Paul C. Ewing
  • Patent number: 4748966
    Abstract: A self-propelled concrete cutting saw in which the saw and the self-propelled platform associated with the saw are both driven by hydraulic motors, with the speed of longitudinal movement of the saw through the concrete being controlled by the density of the concrete being cut by the saw so that the saw blade is operated at an optimum rotational speed.
    Type: Grant
    Filed: November 5, 1986
    Date of Patent: June 7, 1988
    Inventor: Ralph Kennedy
  • Patent number: 4747233
    Abstract: In a gyrofinishing machine, each of the gyratory shafts for holding individual works is controlled by the combination of rack and pinion and the crank mechanism for driving the rack and pinion combination so that the particular part of a work held by the corresponding gyratory shaft can be exposed for the longer time to the abrasive media used for finishing the work, and the gyratory shaft can be stopped at the particular position with high accuracy.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: May 31, 1988
    Assignee: Tipton Manufacturing Corporation
    Inventors: Hisamine Kobayashi, Toshiharu Shimizu
  • Patent number: 4744348
    Abstract: A grinding wheel dressing apparatus including a housing, a dresser shaft rotatably mounted on the housing and having one end adapted for connection to a drive shaft and an opposite end adapted to receive a dresser wheel, and an acoustic sensor retained by the housing and adapted to detect acoustic signals produced by contact between the rotating dresser wheel and a grinding wheel being dressed thereby.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: May 17, 1988
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Hideaki Oda, Akira Unozawa
  • Patent number: 4744178
    Abstract: A hand held grinding device for sharpening drill bits comprises a pair of bearing members which rotatably support a grinding wheel fast on a shaft. Portion of the shaft is engagable with the chuck of a drill. A guide plate with grooves for various size ranges of drill bits is hingedly connected to the bearing members by a plastics hinge. The grooves direct the drill bit to the grinding wheel at an angle of By pivoting the guide plate relative to the bearing members, the trailing portion of the cutting edge of the drill bit is relieved.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: May 17, 1988
    Assignee: Institute for Industrial Research and Standards
    Inventor: Mohammad Afshar
  • Patent number: 4744176
    Abstract: Glass-grinding machine for machining the edges of glass panes, particularly vehicle panes, constructional glass and furniture glass, with a turntable arranged with a vertical turning axis and exhibiting a clamping device for the positioned anchorage of each respective glass pane to be machined, with at least one grinding wheel arranged near the turntable circumference with a vertical axis of rotation, the relative position of which, with respect to the turntable axis, is automatically adjustable in conformity with the contour of the glass pane to be machined as a function of the turning position of the turntable, and with a charging device and a discharging device for the glass panes to be machined and having been machined respectively, characterized in that the grinding wheel (24, 26) is movable under numerical control as a function of the turntable position at least along an axis directed towards the turning axis (12) of the turntable (10). (FIG. 1).
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: May 17, 1988
    Assignee: Glasstemp of Toledo, Inc.
    Inventors: E. Theodor Sack, Gottfried Strauss, Klaus Glittenberg
  • Patent number: 4742651
    Abstract: A control device for the processing pressure on honing, lapping and polishing machines, in which the tool is driven by motor via a spindle which is in its turn rotatably and essentially axially fixedly supported in a bearing member which is movable in the direction of the axis of the spindle, in which furthermore a double-acting actuation device engages at the bearing member via resilient means, and in which finally an energy sensor measuring the processing pressure transmits actual pressure signals to a program control which, dependent on time, compares the actual pressure signals with different preset pressure signals and from the comparison of the pressure signals generates adjusting signals for the actuation device. At least the resilient means counteracting the own weight of the tool is formed by a pneumatic adjusting means which is connected to a pressure gas source via a control valve.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: May 10, 1988
    Assignee: Peter Wolters
    Inventor: Gerhard Wittstock
  • Patent number: 4742650
    Abstract: A sanding machine for sanding the surfaces of work pieces placed upon a conveyor operable to transport the work pieces along a first direction is disclosed wherein each of two sanding heads is oscillated at two different frequencies relative to the work pieces on the conveyor. The first oscillating frequency orbits the sanding heads in a circular motion over the work pieces on the conveyor, while the second oscillating frequency, which is greater than the first frequency, results in a vibration of the individual sanding elements engaging the work pieces. Each sanding head includes a plurality of sander elements transversely spaced above the conveyor, the sander elements of the first sanding head being staggered with respect to the sander elements of the second sanding head.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: May 10, 1988
    Assignee: Conestoga Wood Specialities, Inc.
    Inventors: H. Richard Sauder, Jr., Norman L. Hahn
  • Patent number: 4741128
    Abstract: The stator blades (vanes) of a gas turbine are removed and restored in considerably less time with an easy-to-use, special cutter assembly which arcuately cuts the encased portions of the stator blades in an efficient and effective manner. The cutter assembly has special, adjustable control arms with a power-driven grinding wheel and a saddle assembly which serves as a guide template to facilitate setup and cutting of the stator blades.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: May 3, 1988
    Assignee: Amoco Corporation
    Inventors: Benjamin H. Reaves, William E. Nelson
  • Patent number: 4739745
    Abstract: An improved diamond abrasive saw blade comprising a steel disc having a plurality of slots and resultant projections at its periphery and a plurality of `L` or `T` shaped cutting segments affixed alternatingly in line inversed to each other at the periphery of said disc is described. Also described is a method of retrofitting prior art worn out used blades with novel cutting segments of this invention.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: April 26, 1988
    Assignee: N E D Corp.
    Inventor: Robert E. Browning