Abstract: Aluminum substrates are provided having a coating of particulate material bound thereto by means of an in situ formed binder of aluminum hydroxyoxide. The coated aluminum constructions have utility in imaging and reproduction processes (e.g., as printing plates, as electrographic elements, etc.), as magnetic recording surfaces, controlled roughness surfaces, decorative panels, protective surfaces, etc.
Type:
Grant
Filed:
January 6, 1975
Date of Patent:
August 17, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Dihydroheterocyclic amines having a N-hydrocarbyl substitution and a 2-(or 4-) (omega-(nuclearly substituted cyclic)) vinylenyl substitution are described. There compounds are oxidized in an acidic environment to produce styryl dyes.
Type:
Grant
Filed:
June 25, 1975
Date of Patent:
August 10, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
George V. D. Tiers, Joseph A. Wiese, Jr.
Abstract: An aluminum sleeve connector is applied to an aluminum conductor using multiple deep penetrations of the connector wall into the conductor. The penetrations are sufficient to at least fill the void volume between the connector and conductor in the transverse cross-section in which they lie. Each penetration causes plastic flow in the extruded material of the connector and in the conductor at their interface to minimize spring back and causes shearing at the interface to remove any oxide or other insulative coating.
Type:
Grant
Filed:
March 24, 1975
Date of Patent:
August 10, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Louvered echelon lenses are provided that comprise an optically clear layer having at least one of its large-area surfaces configured as a set of echelon lens elements, and physically attached in optical connection with said layer, an internally louvered layer that comprises an optically clear polymeric matrix and a set of thin optically limiting louvers supported within the matrix in a spaced side-by-side relation.
Type:
Grant
Filed:
July 1, 1974
Date of Patent:
August 3, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Roger H. Appeldorn, Raymond H. Anderson
Abstract: Low temperature flexible fluorine-containing, elastomeric polyurethane containing poly(perfluoroalkylene oxide) units, --CF.sub.2 O--(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n --CF.sub.2 --, are prepared, for example, by reacting hydroxy-terminated poly(perfluoroalkylene oxide) with polyisocyanate, said polyurethane being useful in the shape of a seal or gasket or useful as a structural adhesive or a solid propellant binder.
Type:
Grant
Filed:
October 3, 1973
Date of Patent:
August 3, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Ronald A. Mitsch, Joseph La Mar Zollinger
Abstract: In a binding machine wherein mechanical binding elements are first placed through a sheaf of papers and the surplus lengths of the studs of the binding element are cut off, an improved knife is provided wherein the knife is in the form of one or more U-shaped segments. In a preferred embodiment of the invention, the arms of the U which at least partially support the binding elements also serve to move locking blocks into place. The blade element is at the bight of the U and the blade is slid along the back of the female binding element to cut off excess stud lengths flush with the binding element.
Type:
Grant
Filed:
June 2, 1975
Date of Patent:
August 3, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Magnetic recording medium having a binder-free magnetizable coating of M.sub.2 P where M consists essentially of a combination of at least two transition metals, preferably iron, nickel and/or cobalt, which medium has high coercivity and low Curie temperature, making it especially useful as an intermediate transfer medium for thermoremanent contact duplication.
Type:
Grant
Filed:
February 20, 1973
Date of Patent:
August 3, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Gerald S. Anderson, John D. Holm, Richard L. Jacobson, Ronald E. Smith
Abstract: The tendency of molten weld metal to burn through a supported refractory welding backup material is greatly reduced by incorporating a woven carbon fiber cloth between the refractory and the support. A preferred product is a pressure-sensitive adhesive tape construction incorporating the carbon-fiber cloth in the backing; surprisingly, the carbon does not embrittle the weld.
Type:
Grant
Filed:
April 15, 1975
Date of Patent:
August 3, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Substituted trifluoromethanesulfonanilides wherein the anilide ring is bonded to a phenyl ring through a linking group selected from --CH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH(CH.sub.3)-- and ##EQU1## and pharmaceutically acceptable salts thereof. These compounds are active anti-microbial agents.
Type:
Grant
Filed:
June 1, 1972
Date of Patent:
August 3, 1976
Assignee:
Riker Laboratories, Inc.
Inventors:
George G. I. Moore, Joseph Kenneth Harrington
Abstract: A self-supporting durable flexible conformable low-pressure-drop porous sheet product that contains a uniform three-dimensional arrangement of discrete solid particles. This sheet product comprises, in addition to the particles, a web of melt-blown microfibers in which the particles are uniformly dispersed. The particles are physically held in the web, even though there is only point contact between the microfibers and the particles, whereby the full surface of the particles is available for interaction with a medium to which the sheet product is exposed. The sheet product is especially useful in respirators in which, for example, the sheet product is shaped as a cup-like member adapted to fit over the mouth and nose of a person.
Type:
Grant
Filed:
December 6, 1974
Date of Patent:
July 27, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An aqueous polyurethane emulsion having improved wet strength properties in film form, said aqueous emulsion comprising a blend of an aqueous emulsion comprising an internally emulsified ionic polyurethane polymer with a minor amount of an aqueous emulsion comprising epoxy resin.
Type:
Grant
Filed:
December 21, 1973
Date of Patent:
July 27, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Thermoformable release liner for use in sheet products subjected to deep-draw thermoforming operations and which may be readily removed as generally one piece by hand-pulling after the thermoforming operation is completed, comprises a multilayer structure including (a) a reinforcing layer of a material that, although it is unsuitable for use as the complete release liner, provides useful properties when used as a thinner layer of the release liner, and (b) at least one additional layer adhered to the reinforcing layer to give body to the release liner.
Type:
Grant
Filed:
June 7, 1974
Date of Patent:
July 27, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A sensing medium having two sensing units each formed of a layer of poled electret material that is coated on each planar surface with an electrically conductive plate, such sensing units being separated from one another by a thermal insulating layer.
Type:
Grant
Filed:
February 18, 1975
Date of Patent:
July 27, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A binder element for books and the like is provided wherein a first backing strip having a series of studs thereon, which are provided with ratchet teeth, is used in conjunction with a second backing strip for the opposite side, wherein the second strip has a series of holes each with a mating ratchet tooth for engagement with the teeth on the studs. A blocking means is provided to hold the ratchet teeth permanently in engagement with each other. After the binding has been applied, any excess length of the studs can be broken or cut off.
Type:
Grant
Filed:
May 12, 1975
Date of Patent:
July 20, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A video compensation network is disclosed in which the pedestal level and the peak white level of a composite video signal are automatically maintained within predetermined limits. The network includes two digital/feedback loops for independently detecting and generating correction signals which are used to control the respective pedestal and peak white levels. The feedback loops are activated to make incremental adjustments to the two levels once per video field.
Type:
Grant
Filed:
June 9, 1975
Date of Patent:
July 20, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Certain substituted 6,7-dihydro-1-oxo-1H,5H-benzo[ij]-quinolizine-2-carboxylic acids and hydrazides, esters, amides and salts thereof, intermediates therefor, and a process for their preparation are described; the compounds are active as anti-microbial agents.
Abstract: 10,11-Dihydro-12-(N,N-disubstitutedaminomethyl)-5,10-methano-5H-dibenzo[a,d ]cycloheptenes are prepared by reacting the Grignard reagent of 10,11-dihydro-12-halo-5,10-methano-5H-dibenzo[a,d]cycloheptenes with alkyl ethers of N,N-disubstitutedaminomethyl alcohols. Some of the intermediates in this process are novel compounds.
Abstract: The novel compound 8-N-methylpiperazinyl-N'-carbonyldibenzobicyclo[3.2.1]octadiene and its pharmaceutically acceptable acid addition salts are useful as sedatives and tranquilizing agents.
Abstract: An adhesive dispensing and applying device is disclosed suitable for applying lengths of adhesive onto an article from a convolutely wound roll of transfer adhesive disposed on a liner and convolutely wound about a core. The device has an applicating roller mounted in the forward portion of a housing. A tape support, rotatably mounted in the housing engages the core of the roll in an interlocking engagement and holds the axis of the core in a parallel spaced relationship to the axis of the applicating roller. Thus, the adhesive and liner are held in alignment with respect to the surface of the applicating roller. A takeup roller mounted in the housing receives and holds spent liner after the adhesive has been applied to the substrate. Means associated with the tape support transmit rotational motion from the tape support to the takeup roller so that when the tape support is rotated by unwinding the adhesive, the takeup roller is simultaneously rotated in the opposite direction.
Type:
Grant
Filed:
June 3, 1974
Date of Patent:
July 13, 1976
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A biased rod-tube visual indicator is restrained by a fusible binder. At a selected temperature, the binder will release the rod to an extended position. A reverse spiral coil is provided at the top inner edge of the tube to guide the indicating rod to its extended position.
Type:
Grant
Filed:
March 17, 1975
Date of Patent:
June 29, 1976
Assignee:
Minnesota Mining and Manufacturing Company