Patents Examined by William Terrell
  • Patent number: 4976020
    Abstract: A magnetic sheet polishing device including a scraper having a sliding surface and a downstream side surface that is nearly perpendicular or at an acute angle to the sliding surface to ensure that magnetic material powder spontaneously falls away from and does not adhere again to the magnetic material surface of the magnetic sheet after being scraped off by the scraper. Additionally, the scraper has a diagonal groove or a diagonal step formed in a side surface to check for wear of the sliding surface.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: December 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuo Nagashima, Haruo Soeda, Masamichi Sato, Takashi Kubo
  • Patent number: 4969862
    Abstract: Folded articles, such as paper napkins, handkerchiefs, and the like are puced of an intially continuous web or sheet material which is moved into a folding machine in a feed advance direction at a controllable feed-in speed. The sheet material may be folded once lengthwise around the feed advance direction before it is cut by a cutter operating at equal time intervals. The cut sheet material sections are then accelerated and after the acceleration they are folded at least once crosswise around a direction perpendicularly to the feed advance direction, whereby the cut sections travel at a constant speed during the crosswise folding and subsequent stacking. The feed-in speed is kept constant as long as articles of a given size are being produced. When the article size is to be changed, the feed-in speed is accordingly changed.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: November 13, 1990
    Assignee: Winkler & Duennebier Maschinenfabrik und Eisengiesserei GmbH & Co. KG.
    Inventor: Guenter Ehlscheid
  • Patent number: 4954124
    Abstract: A stand-up plastic bag has a pair of front and rear side walls defining an open bag mouth at upper edges thereof, and a pair of front and rear bottom gusset walls being disposed between the side walls. The walls are composed of a multi-layered film of different, heat-sealable, coextruded thermoplastics, such as polyethylene and Nylon. Polyethylene is on the interior surfaces and Nylon is on the exterior surfaces of the walls. The gusset walls have upper portions interconnected together to form a bottom wall extending between the front and rear side walls. The gusset walls also have lower portions joined by heat seals to lower portion of the front and rear side walls at contiguous portions of polyethylene material on their interior surfaces to form a support band which connects to and extends below the bottom wall.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: September 4, 1990
    Assignee: The Dow Chemical Company
    Inventors: Laurence R. Erickson, R. Douglas Behr, Roger D. Vrooman
  • Patent number: 4951534
    Abstract: A below-floor lathe for reprofiling the rims of railroad-vehicle wheel sets, with four driven friction rollers, two rotating supports, and controls. The friction rollers can be forced in pairs against the outer surface of each rim in a wheel set. A detector determines the level of slippage that occurs between a friction roller and a rim surface and varies the rate at which the rotating supports advance in accordance with the level of slippage detected.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: August 28, 1990
    Assignee: Hoesch Maschinenfabrik Deutschland AG
    Inventors: Dirk Brinkmann, Manfred Reyer
  • Patent number: 4951536
    Abstract: The present invention entails a tool holder adapted to be inserted within the tool slot of a lathe turret. The tool holder includes a detachable cutting unit and a clamping unit. Forming a part of the clamping unit is a pair of wedge blocks disposed within wedge cavities formed within the clamping unit. The wedge blocks are movable via screws from an inner relaxed or disengaged position to an outer position where the wedge blocks engage the tool slot and through a wedging action function to secure the tool holder within the tool slot of the lathe turret.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: August 28, 1990
    Assignee: Kennametal Inc.
    Inventor: Robert J. Robertson
  • Patent number: 4951421
    Abstract: To center optic lenses in a mechanical mounting, in particular during edge cutting and bevelling, the invention includes a device with a housing (10), in which a motor drive (M, R) acts through a torque part (50), drive shafts (14, 14') and drive elements (16, 16') onto aligned centering spindles (18, 18'). These are arranged in guide bearings (22, 22') on projecting parts of the C-shaped housing (10) and are constructed as air bearings. In this manner, it is possible to hold the clamping angle (.alpha.) on the lens (L) in the range below 2.times.8.degree., preferably below 2.times.6.degree.. In particular the lower centering spindle (18) is smoothly axially adjustable in the air bearing (22), for which purpose axially parallel and/or partial-ring-shaped grooves (90) are provided at the ends of a thin-wall guide sleeve (76), between which ends peripheral air-cushion fields build up when pressurized air is being supplied.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: August 28, 1990
    Assignee: Wilhelm Loh Wetzlar Optikmaschinen GmbH & Co. KG
    Inventor: Erhard Brueck
  • Patent number: 4950217
    Abstract: An arrangement in a bag-making machine for forming bag-defining lines of perforation and weld lines in an elongate web (7) comprises a driven roller nip including a nip roller (4) and a backup roller (5), by means of which the web (7) is fed through the machine (1), an elongate cutter (10) which is parallel to the rollers (4, 5) and rotatable about its longitudinal axis, and which when rotated is moved into engagement with the back-up roller (5) for making the lines of perforation, and two welding units (8) with sealing jaws (22) for making the weld lines. In order to allow optional adjustement of the spacing between consecutive lines of perforation and weld lines, the cutter (10) is separately connectible and disconnectible independently of the operation of the roller nip (4, 5) or of other drive means in the machine (1).
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: August 21, 1990
    Assignee: Fas Converting Machinery Aktiebolag
    Inventor: Jan N. Stenqvist
  • Patent number: 4947907
    Abstract: A multi-faceted T-slot cylinder for a cutterhead is mounted to a wood lathe arbor using set screws installed in tapped holes which are provided near opposite ends of the cylinder in diametrically opposite faces of the cylinder (rather than in the same face, as is conventional). Static balancing of the cylinder is thereby improved. For fine-tuning, a dynamic balancing collar is mounted on the arbor near the cylinder. This collar has a plurality of tapped holes provided radially therethrough around its circumference. As the arbor is turned slowly, if measurement shows eccentricity in rotation, the high side is determined and a set screw tightened against the arbor in the respective tapped hole. This dynamic balancing can be done before or after the cutterhead is installed on the arbor, and the dynamic balancer can be used in combination with a wholly conventional T-slot cylinder.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: August 14, 1990
    Inventor: Kenneth R. Anselm
  • Patent number: 4946318
    Abstract: The invention relates to a milling cutter which comprises a body (1) having two indentations (4,5) presenting each a housing (4',5') the body of which makes with the longitudinal axis of the body an helix angle which is not equal to zero. In each housing a cutting insert (6,7) is removably fixed which comprises a corner portion emerging on the frontal face (9) of the body and a main or major cutting edge extending beyond along the external lateral rim of the indentation. The shape of this insert and its position on the cutter are such that the radial cutting angle of the cutter varies in decreasing towards the frontal end of the body, and that the clearance angle of the cutter is constant.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: August 7, 1990
    Assignees: Stellram S.A., Societe Nationale Industrielle et Aerospatiale
    Inventors: Maurice J. A. David, Marianneau, Michel E. A., Gilbert Aebi, Pierre Raye
  • Patent number: 4946431
    Abstract: A method for making block of side-gussetted, bottom-weld bags. Each bag has an opening on one side to fascilitate the removal of individual bags from the block.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: August 7, 1990
    Assignee: Katana Corporation
    Inventor: Harold A. Jensen
  • Patent number: 4943271
    Abstract: In packaging machines with an integrated apparatus for the production, storage and conveyance of blanks, the arrangement of the apparatus within the packaging machine is important. It is necessary to ensure that free unimpeded access to the units is possible. On the other hand, the actual operation of the packaging machine should not be impaired. For this purpose, a web of material (16) for the production of the blanks (13) and in the form of a wound reel (17), a conveying track (18) for the web of material (16), a severing station (19) for forming the blanks (13) and a blank track (26) for feeding the blanks (13) to a folding turret (10) are arranged on the rear side (25) of the packaging machine. The conveying track (18) for the web of material (16) extends parallel to the longitudinal mid-plane of the packaging machine. The blank track (26) follows this transversely.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: July 24, 1990
    Assignee: Focke & Co. (GmbH & Co.)
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4941865
    Abstract: A continuous method of forming a repetitive pattern on a metallized film substrate is disclosed as including the steps of continuously feeding a web of metallized film substrate at a predetermined web speed, selective dry removal of predetermined metallized areas from the metallized film substrate during continuous movement thereof, and collecting metallized dust and flakes removed from the metallized film substrate during the aforementioned dry removal of predetermined metallized areas from the metallized film substrate. Unlike existing wet systems which remove metallized areas from a metallized film substrate, the present invention employs selective dry removal, along with the collection of dust, in a continuous in-line system. Following the selective removal of metallized areas from the metallized film substrate, metallized dust is collected in a closed dust removal system providing removal, transport and collection of the metallized dust in a storage unit.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 17, 1990
    Assignee: Packaging Concepts, Inc.
    Inventor: Joseph Skudrzyk
  • Patent number: 4941245
    Abstract: A disc-shaped rotary file, having a relatively flat operating surface with a curved outer periphery, is formed of ferromagnetic material and includes a plurality of cutting members. The rotary file also includes a second side opposite the operating surface and a number of stop members protruding therefrom. A complementary support member having a relatively flat surface and curved outer periphery is adapted to receive the rotary file superimposed thereon and includes one or more magnets to hold the rotary file in place. The support member also defines one or more depressions or slots for receiving the protruding stop members for preventing the rotation of the rotary file with respect to the support member and for rotation of the file when the support member is rotated.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: July 17, 1990
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Teruaki Yamashita, Hirokazu Naka
  • Patent number: 4941291
    Abstract: For centering optic lenses in a mechanical mounting, in particular during edge cutting and bevelling, a device with a housing (10) is provided, in which housing a split drive shaft (14, 14') with a torque divider (50) is supported. Two centering spindles (18, 18') are aligned in an axial direction (A) and are in this manner driven by a motor. The ends of the mutually adjacent ends of the centering spindles carry clamping cups (20, 20') between which a lens (L) can be aligned and clamped. An air bearing is provided at least for the lower clamping spindle. The air bearing can be pressure loaded by paraxial and/or graduated-ring-shaped channels (90) with control openings (A, B). In particular, two diametrically opposed air-cushion fields can be loaded with pressure. The clamping spindle (18) can then be smoothly axially moved by a membrane piston (32) permitting thereby a very finely dosable feed movement (FIG. 3).
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: July 17, 1990
    Assignee: Wilhelm Loh Wetzlar Optikmaschinen GmbH & Co. KG
    Inventor: Erhard Brueck
  • Patent number: 4939964
    Abstract: Disclosed is a portable machining lathe (10) having a stationary member (11) interconnected with a gear housing (16) which covers a rotating gear member (15). A circular race member (25) is connected to the gear member (15) and held in place by means of a plurality of roller bearings (20). A tool module (35) having a tool bit (54) machines the work piece (38) and automatically advances longitudinally along the work piece (38) by means of an advance mechanism (72).
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: July 10, 1990
    Inventor: Donato L. Ricci
  • Patent number: 4940369
    Abstract: The milling cutter comprises a body (1) having two indentations (4,5) each presenting a housing (4',5') the body of which makes with the longitudinal axis of the body a helix angle which is not equal to zero. In each housing a cutting insert (6,7) is removably fixed which comprises a tip portion emerging on the frontal face (9) of the body and a main cutting edge extending beyond and along the external lateral rim of the indentation. The position and the shape of this insert are such that the radial cutting angle is not equal to zero and is constant, and that the clearance angle is constant with a wedge angle of the insert which is also constant.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: July 10, 1990
    Assignee: Stellram S.A.
    Inventors: Gilbert Aebi, Pierre Raye, Maurice J. A. David, Michel E. A. Marianneau
  • Patent number: 4938640
    Abstract: A metal cutting tool for turning, cutting off, grooving, chamfering and end facing operations. A cutting insert is clamped in a slot in a tool holder by a resiliently pivoting jaw. The tool and holder have complementary longitudinal keying ribs and grooves and a mating transverse projection and recess for resisting forces in both direction.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: July 3, 1990
    Assignee: Iscar, Ltd.
    Inventors: Joseph Pano, Hans Braun
  • Patent number: 4938739
    Abstract: An apparatus for folding a sheet along concentric circular arcs comprises two series of chain driven comb-shaped folding elements. The folding elements of each series are spaced apart by a distance which is approximately twice the distance between the intended fold locations on the sheet, with the elements of one series being arranged to act against one side of the sheet and the elements of the other series being arranged to act against the other side of the sheet. The folding elements of one series are offset relative to those of the other series a distance equalling the distance between adjacent fold locations on the sheet. The elements of one series increasingly overlap the elements of the other series along the length of the sheet, whereby a plurality of folds are simultaneously being formed progressively as the sheet is fed between the two series of folding elements.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: July 3, 1990
    Assignee: Sundstrom Safety AB
    Inventor: Mats G. Nilsson
  • Patent number: 4938638
    Abstract: A milling cutter for chip machining is equipped with adjustable cutting inserts. The milling cutter comprises a tool body having a plurality of peripheral recesses. Each recess is adapted to receive a cutting insert, a support element for defining a support surface against which the insert abuts, an adjustment element for adjusting the position of the cutting insert in a first direction, and a wedge for securing the insert. The adjustment element is threadedly connected to the support element for rotation relative thereto when adjusting the insert. The support element could also include a rotatable portion for adjusting the insert in a second direction.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: July 3, 1990
    Assignee: Sandvik AB
    Inventors: Anders B. I. Hessman, Leif R. Nystrom
  • Patent number: RE33262
    Abstract: Automatic turret lathe with a synchronous spindle in the tool turret which is drivable in synchronism with the main spindle and comprises a workpiece chuck means. To enable workpieces to also be worked on the rear side, i.e., on the side on which they were severed from a stock rod, while the next workpiece held in the main spindle is already being machined with the aid of a further tool carrier, a third tool carrier is arranged on the side of the tool turret mounted on a compound slide system facing away from the main spindle.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: July 17, 1990
    Assignee: Index Werke Komm.-Ges Hahn & Tessky
    Inventors: Helmut F. Link, Walter Grossmann