Patents Represented by Attorney Terryl K. Qualey
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Patent number: 4934227Abstract: A device for cutting a support helix for a radially expanded sleeve of resilient material which may be used as an enclosure of an elongate object such as an electrical cable. The device includes a knife wheel having a plurality of circumferentially distributed, radially projecting knives for making elongate spaced cuts through the wall of a plastic tube. The plastic tube and the knife wheel are rotated and moved axially relative to each other to cause the knife wheel to make a helical pattern of elongate spaced cuts through the wall of the plastic tube along the entire length of the plastic tube. One end portion of the helix is separated from the helix into a strip extending from one end of the helix through the support helix and out of the other end thereof where it may be manually grasped. The connection areas between the spaced cuts are dimensioned so that the support helix can be manually unwound by pulling on the end portion extending through the support helix.Type: GrantFiled: April 13, 1989Date of Patent: June 19, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Winfried Knorr
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Patent number: 4929429Abstract: A catalytic converter utilizing a resilient, flexible shot-free ceramic fiber containing mounting mat for mounting a monolith with a metallic casing is disclosed. The mounting mat may be comprised of shot-free composite of shot-free ceramic fibers in combination with an intumescent sheet material.Type: GrantFiled: February 11, 1988Date of Patent: May 29, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Richard P. Merry
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Patent number: 4917942Abstract: Improved microfibrous filtration laminate comprising a highly permeable layer of a self-supporting nonwoven fabric which provided support for a layer of a randomly intertangled nonwoven mat of electret-containing microfibers of synthetic polymers are disclosed. The filtration laminate, which is particularly useful as disposable filter bags or as a lining material for disposable paper filter bags for vacuum cleaners, is characterized by thickness and handling characteristics approaching that of paper filter material typically use in disposable vacuum clean bags but having improved performance in the areas of an immediate, high particle capture efficiency, minimal flow restriction and long service life.Type: GrantFiled: December 22, 1988Date of Patent: April 17, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: John C. Winters
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Patent number: 4912488Abstract: Camera apparatus including a housing within which an exposure station is provided with a film handling means provided at the exposure station for supporting and disposing a strip of film and a linear array of electric-to-light transducers disposed to direct light from the array to the strip of film as it is moved past the exposure station. Another embodiment employs two linear arrays of electric-to-light transducers which are used to expose separate areas of the film as it is moved past the exposure station.Type: GrantFiled: July 1, 1988Date of Patent: March 27, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert S. Berglund, Earl K. Hoyne
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Patent number: 4871599Abstract: A support helix for a radially expanded sleeve of resilient material which may be used as an enclosure of an elongate object such as an electrical cable, comprising a tubular base body having a constant wall thickness through which circumferentially spaced cuts are formed in a helical pattern along the entire length of the base body. One end portion of the helix is separated from the helix into a strip extending from one end of the helix through the support helix and out of the other end thereof where it may be manually grasped. The connection areas between the spaced cuts are dimensioned so that the support helix can be manually unwound by pulling on the end portion extending through the support helix.Type: GrantFiled: April 14, 1988Date of Patent: October 3, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventor: Winfried Knorr
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Patent number: 4839473Abstract: A waterproof electrical splice enclosure for receiving an electrical connector connecting the ends of a plurality of insulated electrical conductors extending out of the connector in the same direction and parallel to one another. The enclosure comprises an elongate hollow tube having one open end and one closed end and having a cross-section slightly larger than the connector. A connector retainer is provided to retain the electrical connector adjacent the closed end of the tube with the insulated electrical conductors extending out of the open end of the tube, and the tube contains a waterproofing fluid which will not flow out of the tube but which will flow around the connector as it is slid into the tube to provide a waterproof seal around the connector and around and between the insulated conductors. A cap is connected to the tube at its open end by a hinge and has a bulbous protrusion to fit into and close the open end of the tube, and a latch retains the cap in the closed position.Type: GrantFiled: September 23, 1986Date of Patent: June 13, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Albert H. Fox, Ronald C. Johansson
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Patent number: 4776488Abstract: A device for dispensing flowable material through a flexible wall of a bag, comprising a sealing part provided in the bag, and a dispensing part provided outside of the bag, the dispensing part being adapted to be mated with the sealing part as it penetrates the bag wall to form a throughgoing connection sealed against the bag wall around the opening. The sealing part and the dispensing part include, outside of the areas surrounded by their bag sealing around the opening, cooperating interlocking means which upon mating of the parts engage between them and stretch the wall of the bag taut before the bag wall is cut, and which engage in an interlocking position at the end of the mating movement of the parts.Type: GrantFiled: December 5, 1986Date of Patent: October 11, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventor: Egon Gurzan
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Patent number: 4767893Abstract: A cable closing method and the resultant cable closing constructed by enclosing the cable area to be closed with a flexible waterproof enclosure, wrapping the cable with a water-activatable urethane resin impregnated cloth to span the area enclosed by the flexible waterproof enclosure, wetting the water-activatable urethane resin impregnated cloth to activate the resin and permitting the urethane resin to cure.Type: GrantFiled: September 17, 1984Date of Patent: August 30, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventors: James H. Ball, William J. Seim
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Patent number: 4740653Abstract: An electrical medium voltage cable connection enclosure for an oil-filled, paper-insulated cable has a spacer body arranged between a core connection area and a shielding enclosure. The spacer body is a prefabricated, resilient, open-pore foam material body which has an air-free filler of electricity insulating, flowable, impregnating compound and is longitudinally split and put under a resilient pressing force by the shielding enclosure.Type: GrantFiled: December 5, 1986Date of Patent: April 26, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventor: Dieter Hellbusch
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Patent number: 4712773Abstract: A multiple panel unit for creating a play area for young children in which each panel has a rigid rectangular frame and is connected to an adjacent panel by a hinge structure at the top and bottom of the panels permitting the panels to be pivoted with respect to each other at the hinge. The top of a first of two adjacent panels and the corresponding end of the hinge structure are formed for releasably retaining the end of the hinge and the bottom of the second of the adjacent panels and the corresponding end of the bottom hinge structure are formed with a pin and a mating recess that are matable in a direction parallel to the hinge pivot axis.Type: GrantFiled: April 24, 1987Date of Patent: December 15, 1987Assignee: North States Industries, Inc.Inventor: Donald A. Larson
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Patent number: 4692122Abstract: An electrical conductor interconnection terminal with a double wall barrel joined across a seam therein.Type: GrantFiled: October 6, 1986Date of Patent: September 8, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventor: Peter Montalbano
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Patent number: 4657321Abstract: A telecommunication service wire shield connector stamped and formed from a sheet of metal and having a generally planar elongate base, a ground stud connection tongue extending from one end of the base, a strain relief adjacent the opposite end of the base and having teeth inclined toward the base for engaging the service wire sheath, and a shield connector between the connection tongue and the strain relief and having small teeth inclined toward the base for scraping the service wire shield upon insertion and making electrical connection to the shield.Type: GrantFiled: March 27, 1986Date of Patent: April 14, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark D. Sorlien, Manuel Filreis, William J. Seim
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Patent number: 4624518Abstract: An electrical connector having a hollow cylindrical contact element with two circumferential wire connecting slots. A cap rotatable about the contact element and has a transverse channel for receiving an insulated wire end to carry it into a first of the wire connecting slots upon rotation of the cap. A tubular sleeve is also rotatable about the contact element and has a transverse channel for receiving an insulated wire end to carry it into the second wire connecting slot upon rotation of the tubular sleeve. A locking mechanism locks the tubular sleeve after rotation to its wire connecting position.Type: GrantFiled: September 26, 1985Date of Patent: November 25, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Udo Seidel
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Patent number: 4609208Abstract: A pad of wire identification labels comprising a relatively stiff rectangular pad backing and a multiplicity of layers of a pressure sensitive adhesive tape on the pad backing. A narrow band of a release liner is similarly adhered to the pressure sensitive adhesive surface of each layer of tape along one edge and the layers of tape and the release liner are slit into a multiplicity of long, narrow, parallel strips defining the individual labels. Each of the narrow label strips has a multiplicity of the same indicia spaced along its length.Type: GrantFiled: September 16, 1985Date of Patent: September 2, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Norbert E. Wrobel
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Patent number: D289342Type: GrantFiled: August 20, 1984Date of Patent: April 21, 1987Assignee: Hartzell Manufacturing Inc.Inventor: James R. Reichow
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Patent number: D295495Type: GrantFiled: June 5, 1985Date of Patent: May 3, 1988Assignee: Wright Products, Inc.Inventor: George J. Praska
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Patent number: D297911Type: GrantFiled: July 30, 1986Date of Patent: October 4, 1988Assignee: Wright Products, Inc.Inventor: Bruce J. Rubin
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Patent number: D301457Type: GrantFiled: December 31, 1986Date of Patent: June 6, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel M. Friederichs
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Patent number: D308628Type: GrantFiled: March 27, 1986Date of Patent: June 19, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark D. Sorlien, Manuel Filreis, William J. Seim
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Patent number: D357243Type: GrantFiled: August 3, 1992Date of Patent: April 11, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Barbara K. Schmotter, James O. Kubokawa