Patents Represented by Attorney John C. Barnes
  • Patent number: 4981544
    Abstract: A thin static dissipative tape construction for use as a rug or runner in static sensitive areas should have a thickness of less than 1.5 mm and preferably less than 1.02 mm and be adhesively coated for application direct to the floor. The tape comprises a static dissipative layer, a conductive layer laminated thereto and a continuous pressure sensitive adhesive coating. The static dissipative layer is textured. The tape may be perforated to apply wide webs to surfaces.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: January 1, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John E. Nordale
  • Patent number: 4946037
    Abstract: A package including containers having gabletops, wherein it is desired to maintain the containers in pairs, in separate areas, with support members to provide support for the gabletops from one side of the carton and identify the pairs of containers and separate them from other pairs of containers. The support members bridge the areas and are formed with panels adapted to engage the inclined roof panels of the gabletop containers and brace them from the wall of the carton to protect the ridge seal.
    Type: Grant
    Filed: October 25, 1988
    Date of Patent: August 7, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Roger H. Keith
  • Patent number: 4936783
    Abstract: A connector for mounting a plastic quad flat pack device having fine pitch leads is preferred that will protect the leads while the device is removed from supply trays and that will serve to define a lid as the device is placed in a socket. The lid has rods to frictionally engage the body of the device and ribs with undulating recesses to engage and support the fine leads of a said device.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kurt H. Petersen
  • Patent number: 4932894
    Abstract: In electrical terminals it is sometimes necessary to insert two wires into a contact adapted for insulation displacement connection and to do so successfully the wires must enter the wire receiving slot sequentially. A wire receiving opening aligned with the wire receiving slot should have a generally circular opening to readily receive the wires but when the wires are forced in the direction of the wire receiving slot a semi-circular concavity communicating with the opening and positioned on the side of the opening opposite the slot will receive one wire to feed the wires sequentially.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: June 12, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard J. Scherer
  • Patent number: 4902855
    Abstract: Splice closures can be readily sealed by wrapping the cables with a mastic and then forming an end for a performed closure by placing the halves of a split ring about the mastic and drawing the halves closed by a toggle fastener including an arcuate leg connected at one end to one half and joined intermediate the fulcrum and handle of a lever supported on the other half to squeeze the mastic about the cables as the halves are drawn together. The closure may be sealed to the ring by a rolling O-ring.
    Type: Grant
    Filed: October 25, 1988
    Date of Patent: February 20, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Russell P. Smith
  • Patent number: 4891018
    Abstract: A solderless electrical connector formed of a polyolefin is formed with the same integrity as with harder polymeric materials when used with a connecting member of ductile material having a clearance slot between the wire receiving grooves and when formed to force the supporting cap into tight engagement with the inside surfaces of walls forming the base cap receiving cavity. The connecting member includes a passage for encapsulant to pass through the plate members.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: January 2, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Martin G. Afflerbaugh, George J. Knox
  • Patent number: 4885728
    Abstract: A wrist band connector constructed from a sheet of deformable, electrically conductive material having tabs at both ends capable of being folded around a wrist band and an electrical connection mechanism mechanically and electrically attached to the sheet between the tabs and providing an electrical connection point for an electrical cable, as for example, an electrical ground cord. An outer insulative layer may be provided and tangs may be formed into the tabs to provide additional assurance that intimate electrical contact will be made with the interior surface of the wrist band onto which the wrist band connector is installed.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: December 5, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jerome T. Gosselin
  • Patent number: 4865562
    Abstract: Closely spaced electrical contacts are increasingly difficult to place in the manufacture of connectors and a strip molded onto stamped contact elements provide locating and alignment of the contact elements to make the same easily located in molded housing or tooling for molding. Wire support surfaces molded as part of the strip insure placement of conductors for connection with the contact elements.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: September 12, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John S. Burg, Hirochika Enn, Lane A. Freshwater
  • Patent number: 4860888
    Abstract: A shipping carton for containers having gabletops, wherein it is desired to maintain the containers in pairs, is provided with areas which receive the containers in pairs and support members are provided to support the gable tops from one side of the carton and identify the pairs of containers and separate them from other pairs of containers. The support members bridge the areas and are doubly deeply grooved to engage the gabletop containers.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: August 29, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Roger H. Keith
  • Patent number: 4859189
    Abstract: A test socket for testing chips and chips on tape wherein the test socket is formed on a heat resistant dielectric film having contact pads and connector pads joined by metallic circuit traces and which film is wrapped on a compliant pad. The connector end of the tape is joined to a circuit board by a conductive tape and maintained in contact by the compliant pad. A frame registers the chip with the contact area of the tape.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: August 22, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kurt H. Petersen, Christopher A. Schmolze
  • Patent number: 4850904
    Abstract: A low profile socket connector for use in making connection with printed circuit boards utilizing a contact element having a female contact portion including a stepped portion extending substantially parallel to a body portion and a curved contact piece extending from the stepped portion toward the body portion and a second contact piece extending from the body portion toward the first contact piece affording a double wipe with a pin element.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: July 25, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Tatsuyoshi Shimizu
  • Patent number: 4850887
    Abstract: An electrical connector having terminals disposed in a body, which terminals have terminations in one face disposed in two rows and in columns and the terminals have tail portions which protrude from the other face with the terminal ends thereof disposed in a single row and the terminals are disposed to form mirror images about a plane perpendicular to the rows and through a midpoint between terminals to reduce possible crosstalk.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: July 25, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Naoto Sugawara
  • Patent number: 4842303
    Abstract: An advertising insert for ad signatures in magazines is convenient when comprised of a readily peelable and adhesively repositionable sheet bearing a coupon, phone number or the like which is part of a backer which can be removed along perforations from an edge adhered to the ad signature.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: June 27, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert P. Molenda
  • Patent number: 4835854
    Abstract: Splices in multi-wire cables are orderly when wires of the same length, each affixed to a pluggable connector, are joined and the connectors are rotated 180 degrees to maintain the wire pairs orderly and are bundled.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: June 6, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Terrance L. Markwardt
  • Patent number: 4836803
    Abstract: A wire holding device for locating wires in an electrical connector, comprising at least one passageway into which a connection wire to be held can be moved essentially normally of its length through an outwardly enlarging entrance slot toward a closed end of the passageway. A first barb adapted to be resiliently urged aside by a wire upon the introduction thereof extends from a sidewall of the passageway adjacent the entrance slot. A second barb extends from the sidewall opposite the first barb and is adapted to be resiliently urged aside by the wire upon the introduction thereof, the free end of the second barb, together with the closed end of the passageway partitioning off a partial passageway.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: June 6, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Udo Seidel
  • Patent number: 4836800
    Abstract: A plugable connector for splicing telephone cables comprising a pair of connector bodies each having a plurality of contact elements, one body with a male terminal and the other with a female terminal and said female terminal being in a recess and each male terminal being surrounded by an insulating wall to fit within said recess when said terminals are joined.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: June 6, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Terrance L. Markwardt
  • Patent number: 4836796
    Abstract: A wrist strap can be connected through the fabric of a cleanroom garment by means of an inexpensive, removable connector comprising two molded plastic parts that can be interconnected to entrap the fabric. Protruding from a reservoir in the first of the two plastic parts is an open tube of open-cell foam which is filled with an electrically conductive gel. The foam tube protrudes from the reservoir and, when the two plastic parts are interconnected, the foam tube is compressed and transmits a squeezing force to the conductive gel, thus forcing a portion of the conductive gel through the exposed open end of the foam tube into the entrapped fabric and against an electrode in the second of the two plastic parts. This completes an electrical connection between that electrode and an electrode in the first plastic part at the base of the reservoir. The conductive gel may also be carried in a collapsible cup which is biased to force the conductive gel through the fabric to complete the electrical connection.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: June 6, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard W. Burvee
  • Patent number: 4836292
    Abstract: A method and product for use in smothering a nuclear fire resulting from an accident in a nuclear plant comprises the discharging onto the fire liquified inert gas, e.g. argon, so the gas will block the flow of oxygen to the fire. The liquified argon may be contained in reinforced allantoidal casings.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: June 6, 1989
    Inventor: Cecil R. Behringer
  • Patent number: 4834668
    Abstract: An electrical connector for connecting telephone cables wherein an end of each wire is connected to a part of the connector and then cut through cutoff holes in the connector cover, and when the connector parts are assembled to splice the cables said cover has portions to cover the cutoff holes.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: May 30, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Terrance L. Markwardt
  • Patent number: 4828249
    Abstract: An exercising device which fits in a hand for exercising the hand, wrist and arm muscles comprises an elastomeric polygonal body member having a plurality of holes such that it can be squeezed and compressed in the hand or stretched with the thumb and fingers in the holes.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: May 9, 1989
    Inventor: Michael D. Keating