Patents Represented by Attorney, Agent or Law Firm James J. Trussell
  • Patent number: 5490808
    Abstract: The present invention relates to a method and apparatus for abrading a workpiece. The apparatus includes an abrasive tape having a microstructured surface on the back face thereof, and a support shoe having a microstructured surface on an exposed pressure face. The two microstructured surfaces intermesh and resist displacement of the abrasive tape with respect to the pressure face as the workpiece is rotatively abraded.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: February 13, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert J. Jantschek, Forrest J. Rouser, Mark L. Sterner, Theodore J. Testen
  • Patent number: 5487293
    Abstract: A fastener for use with a rotary peening flap to secure at least two overlapping strap portions together. The fastener includes a shaft for extending through apertures in the overlapping strap portions, a head adjoining one end of the shaft, and an elastic washer at the other end of the shaft. The head of the fastener forms an included edge angle of greater than approximately 90.degree. at the intersection of the bottom and side surfaces of the head. The fastener maintains the overlapping portions of the strap under compression to prevent peening debris form becoming lodged between the fastener and the strap and between the overlapping portions of the strap and to prevent slippage between the strap and the fastener and between the strap portions. The elastic washer has sufficient elasticity to maintain compression as the strap portions become substantially thinner over prolonged use. A peening flap incorporating the fastener is also disclosed, as is a hub assembly incorporating the peening flap and fastener.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: January 30, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Michael W. Lovejoy
  • Patent number: 5482496
    Abstract: The present invention relates to an automated random, orbital abrading apparatus and a method and apparatus for positioning the back-up pad of the apparatus at a known location within its range of motion at the end of an abrading cycle.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: January 9, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David J. Lanzer
  • Patent number: 5474586
    Abstract: Disclosed is candle filter assembly including a candle filter for the filtration of particulates from a fluid. The candle filter is constructed of ceramic fibers and includes a gimbal mount. The candle filter is pivotally supported, and is mounted so as to redirect axial compressive forces into compressive through wall compressive forces. Also disclosed is a filtration system including a plurality of such candle filter assemblies mounted in an enclosure.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: December 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joseph H. Eaton, Billy L. Weaver, Robert G. Smith
  • Patent number: 5465900
    Abstract: A self-contained container assembly which may be quickly and easily formed into a three-dimensional container without the need for additional components or tools which includes a container blank and a tape structure. The container blank includes (i) a plurality of laterally interconnected panels, and (ii) a set of closure flaps hingedly connected to the longitudinal ends of the panels at one end.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: November 14, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eugene L. Baratto, John R. David, Curtis L. Larson, Thomas L. Nelson, Norbert E. Wrobel
  • Patent number: 5458726
    Abstract: The present invention provides an apparatus for applying an adhesive handle to a load, both if it is a pack of items kept together by a unitizing means such as heat-shrunk wrapping or if it is a single article such as a box. More specifically, the apparatus for applies adhesive handles to loads that as they are driven along a path, the apparatus in its preferred embodiment being characterized by a rotatable lever having two opposing arms, either of the arms being in turn positioned within the path. A holding means is provided on the lever for carrying a handle to lay on a surface of the two arms of the lever with its non-adhesive side against the surface of the lever and its adhesive side exposed. Additionally a lever driving means is provided to controllably rotate the lever by about 180.degree. after a load that is driven along the path hits an arm of the lever that is positioned within the path.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 17, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Roberto Castoldi
  • Patent number: 5453116
    Abstract: A device and method for maintaining a clean gas stream includes a particulate filter comprising of support tube made from a formed textile. The formed textile is constructed from a continuous filament inorganic yarn and is porous to allow gas and particulates therein to pass through the support tube. A filtering element is disposed about the support tube to trap particulates in the exhaust gas. The formed textile which defines the support tube is relatively flexible in its natural state. To act as a supporting structure, the formed textile is made less flexible by the application of an inorganic binder. The natural flexibility of the formed textile minimizes the damaging effects of mechanical and thermal shock, while the inorganic binder stiffens the formed textile and allows the support tube to support itself and the filtering element thereon.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: September 26, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Edward M. Fischer, Richard L. Bloom, Stephen M. Sanocki, Joel H. Sabean
  • Patent number: 5452551
    Abstract: The invention relates to a firestop assembly for a pipe, comprising first and second intumescent firestop rings. The first intumescent firestop ring overlies the pipe, and extends along the pipe for a first distance, and the second intumescent firestop ring overlies the first intumescent firestop ring and extends along the pipe for a second distance. The first distance is not equal to the second distance, and the firestop assembly so provided is particularly adapted for firestopping a plastic pipe.
    Type: Grant
    Filed: January 5, 1994
    Date of Patent: September 26, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Paul J. Charland, Anthony J. Schommer
  • Patent number: 5439335
    Abstract: The present invention relates to a method and apparatus for forming a longitudinally extending keyway portion in a mill roll having a central bore. The keyway portion may be either a keyway or a tab portion. A cutting head is provided, and includes a body and one or more cutting tools extending from the periphery of the cutting head body. The cutting head is driven through the central bore of the mill roll, and the cutting tools form one or more keyway portions adjacent and communicating with the central bore.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: August 8, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary L. Curtis, Gregory A. Johnson, Paula M. Tuebo
  • Patent number: 5439435
    Abstract: The present invention relates to a method and apparatus for forming a longitudinally extending keyway portion in a mill roll having a central bore. The keyway portion may be either a keyway or a tab portion. A cutting head is provided, and includes a body and one or more cutting tools extending from the periphery of the cutting head body. The cutting head is driven through the central bore of the mill roll, and the cutting tools form one or more keyway portions adjacent and communicating with the central bore.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: August 8, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary L. Curtis, Gregory A. Johnson, Paula M. Tuebo
  • Patent number: 5389032
    Abstract: The present invention relates to an abrasive article for abrading material from a workpiece. In one embodiment, the abrasive article includes a back-up pad having first and second major surfaces. The first major surface includes a shaft adapted to connect the abrasive article to an abrading apparatus for movement relative thereto. Adjoining the second major surface are first and second resilient support portions, to which are attached first and second abrading members, respectively. When an operator applies a first force to the abrading apparatus, the first abrasive surface contacts and abrades the workpiece. When the operator applies a second force that is greater than the first force, both the first and the second abrasive surfaces contact and abrade the workpiece.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: February 14, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kris A. Beardsley
  • Patent number: 5377455
    Abstract: The present invention relates to an automated random, orbital abrading apparatus and a method and apparatus for positioning the back-up pad of the apparatus at a known location within its range of motion at the end of an abrading cycle.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: January 3, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David J. Lanzer