Patents Represented by Law Firm Alexander, Sell, Steldt & DeLaHunt
  • Patent number: 4125406
    Abstract: Refractory fibers having a composition of 10-75% Al.sub.2 O.sub.3, 1-30% Cr.sub.2 O.sub.3 and 10-75% metal (IV) oxide selected from at least one of silica, titania, zirconia, and tin oxide and having at least one microcrystalline phase therein may remain strong, flexible, and continuous at temperatures of 1300.degree. to 1500.degree.C and beyond.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: November 14, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Harold G. Sowman
  • Patent number: 4017351
    Abstract: An improved system and a device for providing air inflated cushioning material which is filled and sealed at the site of its intended use, such as at a packaging line. Included is an elongate flexible layered strip material comprising two heat sealable films fused together in discrete areas to form two rows of inflatable chambers along the strip and a passageway extending the length of the strip between the rows, with each of the chambers having an inlet opening narrower than the main portion of the chamber communicating with the passageway. The strip is shipped uninflated to the site where the cushioning material is to be used, and is then inflated on the device through which the passageway in the strip is propelled over an air nozzle to inflate the chambers through their inlet openings.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: April 12, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Curtis L. Larson, John R. Ward
  • Patent number: 4015612
    Abstract: Hair styling compositions which have excellent holding characteristics at elevated humidity and impart a soft hand and natural sheen to hair comprising a solution of a film-forming polymer modified with a fluoroaliphatic radical containing compound are disclosed.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: April 5, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Frank J. Pavlik, Robert L. Hansen
  • Patent number: 4014734
    Abstract: A device for forming lengths of adhesive tape into tubes including a mandrel having an axis and a multiplicity of radially outwardly projecting resilient bristles having tips defining at least the major portion of a periphery around the axis in the shape of a tube to be formed. The tape is wrapped around the periphery of the mandrel and the ends of the tape overlapped to form a tube having an axially extending seam. A ring is then pressed against one end of the formed tube to slide it axially off of the bristles and mandrel.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: March 29, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard A. Patterson
  • Patent number: 4013494
    Abstract: A method for forming lengths of adhesive tape into tubes including providing a mandrel having an axis and a multiplicity of radially outwardly projecting resilient bristles having tips defining at least the major portion of a periphery around the axis in the shape of a tube to be formed. The tape is wrapped around the periphery of the mandrel and the ends of the tape overlapped to form a tube having an axially extending seam. A ring is then pressed against one end of the formed tube to slide it axially off of the bristles and mandrel.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: March 22, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard A. Patterson
  • Patent number: 4011586
    Abstract: A voice actuated voice logging recorder adapted to use magnetic recording tape in preloaded magazines includes a logging deck having a transport mechanism, means responsive to an input signal corresponding to voice data for enabling the transport mechanism to switch to a run position and a verification network which is activated upon insertion of a magazine into the deck. The verification network is particularly desirable to overcome limitations in the reliability of typical cassette recorders, and includes a network for rewinding the tape to ensure that all of the tape is on a rewind spool and that the tape is not bound. A second network repositions the rewound tape to enable recording onto the tape and a test recording is then produced to ensure that the tape is properly oriented, i.e., that the tape has not become twisted within the magazine.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: March 8, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Sheldon Lee Pastor, Dan J. Argento
  • Patent number: 4011063
    Abstract: An improved low-density abrasive of the type wherein abrasive granules are bonded throughout a lofty, porous, compressible, non-woven fibrous web, the fibers bonded to each other and the abrasive granules bonded to the webs by a resin or the fibers of the web being bonded to each other by a first resin and the abrasive granules bonded to the web by a second resin. At least one of the resins employed in the present product is a hard, tough, polyisocyanurate resin having a minimum of 0.5 gram equivalent of isocyanurate per thousand grams of resin, the sum of the urethane plus isocyanurate equivalents being at least 1.3. The resulting product is useful for a wide spectrum of industrial and home abrasives applications.
    Type: Grant
    Filed: April 5, 1972
    Date of Patent: March 8, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Manley R. Johnston
  • Patent number: 4009072
    Abstract: A device including two heads which may be positioned at an applying station to apply parallel lengths of elastic reflex-light reflective strip material in an unstretched condition around the circular outer surface of a tire casing rotated past the station. Each head includes a vacuum column which supports a supply length of the strip material adjacent the applying station so that the strip material at the applying station will be under essentially no tension; and a tape drive mechanism which removes and drives away a protective liner from the strip material, drives the strip material toward the vacuum column at a variable rate to maintain a supply length of the strip material in the vacuum column and has a novel self adjusting feature that insures equal driving rates for the strip material and liner.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: February 22, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas E. Schultz, Peter W. Schuchardt
  • Patent number: 4008962
    Abstract: Apparatus and method for making full color prints of a multicolor graphic original. The prints can be duplicates of the original or can be prints having colors for the various colors appearing in the original that have been synthesized to provide prints which are a "recoloring" of the original. The color data for synthesizing is stored in a permanent, machine readable form for later readout and use in controlling operation of the apparatus in order that the print from the original with synthesized colors can be easily reproduced without having to manually adjust controls for placing the necessary color data into the apparatus to obtain the desired "recolored" print.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: February 22, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert F. Nepper
  • Patent number: 4009047
    Abstract: A device for cleaning foreign material from at least one surface of a sheet including at least one low durometer sheet cleaning roller having a tacky peripheral surface. The surface of the sheet to be cleaned is biased against and moved generally tangentially across the tacky peripheral surface of the cleaning roller with rolling contact therebetween so that foreign material on the surface of the sheet will be adhered to the tacky surface of the cleaning roller. The tacky surface of the cleaning roller is in turn cleaned by bringing into rolling contact therewith a surface on a roller cleaning member (which surface may be provided by the adhesive on a length of tape) having a higher surface tack than the cleaning roller. In one embodiment of the device the roller cleaning member is periodically passed over the cleaning roller by the operator of the device, whereas other embodiments automatically pass the roller cleaning member over the cleaning roller during each cycle of the device to clean a sheet.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: February 22, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas W. Lindsay
  • Patent number: 4009224
    Abstract: Stable, free-flowing epoxy resin powder which fuses to and cures upon striking an object which has been preheated to the curing temperature of the composition to provide a tough protective coating. The composition of the powder differs from the prior art in that it includes 3-30 parts of a copolymer of 2-50% vinyl acetate and 5-75% ethylene per 100 parts of the epoxy resin. The copolymer improves the flexibility of the cured coatings.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: February 22, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gerald H. Warnken
  • Patent number: 4008350
    Abstract: A padded stocking, suitable as footwear in conjunction with a ski boot or the like, is provided comprising a stocking having affixed to the ankle and shin region thereof a conformable layer of a visco-elastic material, such as a flexible open-cell polyurethane foam impregnated with an acrylic resin, which functions as a padding, said conformable layer having retarded deformation and recovery characteristics such that said layer with a thickness of at least 1/8 inch has a compression modulus of 1 to 15 pounds per square inch when measured at a deformation rate of 2 inches per minute and a plot of said compression modulus versus time yields a curve with a slope of -0.3 to -2.0 pounds per square inch per second when said layer is compressed at deformation rates of 2 to 20 inches per minute.
    Type: Grant
    Filed: August 31, 1972
    Date of Patent: February 15, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George H. Crawford, Howell K. Smith, II
  • Patent number: 4007950
    Abstract: A binder unit for stapled booklets is provided, having an edge member joining the front and back covers of the booklet wherein the edge member has a space in which the terminal ends of the staples are concealed. The space may be empty or it may be occupied by a easily compressible material such as foam plastic.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: February 15, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Joe D. Giulie
  • Patent number: 4007058
    Abstract: This invention pertains to a fuel cell which comprises a case, positive and negative electrodes inserted therein and electrolyte filling the inner space between the electrodes. Means for introducing an oxidizing gas into the space behind one electrode and a fuel behind the other are provided. A porous membrane substantially parallel to the electrodes comprising a self-supporting compressible porous fibrous mat of randomly dispersed and entangled micro-fibers of a high molecular weight thermoplastic polymer impregnated with said electrolyte occupies said inner space. This porous membrane permits communication of electrolyte between electrodes but prevents passage of small bubbles of oxidizing or fuel gases.
    Type: Grant
    Filed: December 11, 1974
    Date of Patent: February 8, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alfred Dwayne Nelson, Larry E. Espelien
  • Patent number: 4005538
    Abstract: Internally illuminated signs incorporating light-transmissive retroreflective sheeting between the internal illumination source and the sign face in position to retroreflect light beamed against the sign face so as to make the signs retroreflective. Preferred sheeting comprises an open web of filaments encased by retroreflective microspheres.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: February 1, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Chi Fang Tung
  • Patent number: 4005209
    Abstract: Certain compounds in which a carbon atom of a pyrrolidine or piperidine ring is bonded directly or through a methylene group to the nitrogen of a substituted benzamido group, and their pharmaceutically acceptable salts, are found to be active as antiarrhythmic agents.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: January 25, 1977
    Assignee: Riker Laboratories, Inc.
    Inventors: Elden H. Banitt, William R. Bronn
  • Patent number: 4005141
    Abstract: Phenyl-substituted perfluoroalkanesulfonanilides in which the phenyl rings are linked by sulfur, sulfinyl or sulfonyl and salts thereof in which the rings and the perfluoroalkylsulfonamido nitrogen are optionally substituted. The compounds are active herbicides and some are anti-inflammatory agents and analgesic agents.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: January 25, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George G. I. Moore, Joseph Kenneth Harrington
  • Patent number: 4004930
    Abstract: A fluid composition useful to form retroreflective structures, comprising a liquid vehicle and, dispersed in said vehicle, retroreflective platelet particles that comprise flat segments cut from a larger retroreflective sheeting.
    Type: Grant
    Filed: July 2, 1975
    Date of Patent: January 25, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Chi Fang Tung
  • Patent number: 4004566
    Abstract: A clip and indexing mechanism for a gas-operated gun which affords the visible inspection and incremental advancement and insertion of projectiles from the clip into the chamber of the gun. The clip is formed with a long narrow rectangular web across which are positioned parallel spaced cylindrical cavities, each containing a projectile and each cavity being individually sealed by a mechanically rupturable seal. The gun includes an indexing mechanism for indexing the clip but reciprocation of the breech block to withdraw a bolt or obturator from the clip, index the clip and then force the next projectile through the seal and into the bore also cocks the hammer and further reciprocation before firing the projectile then in the barrel does not operate the indexing mechanism. Releasing the hammer resets the indexing mechanism to index the clip.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: January 25, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Earl Lee Fischer
  • Patent number: 4004565
    Abstract: A clip for use with a gas-operated gun to package and supply to the gun hygienic projectiles for inoculating animals with a particular biologically active material. The clip contains a molded structure having a plurality of axially aligned adjacent cylindrical chambers receiving the implant projectile and each chamber is sealed by a rupturable sealing film at each end thereof. Indexing recesses are provided on said structure and associated with each of the chambers for indexing the clip in the gun to dispose seriatim the chambers in alignment with the bore of the gun.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: January 25, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Earl Lee Fischer, Jay W. Gould, III