Abstract: An inflatable cushioning article is made from a multilayer film having a seal layer, a gas barrier layer, and a tie layer adhering the seal layer to the gas barrier layer. The cushioning article has a plurality of inflatable chambers, with each of the chambers having a plurality of cells connected in series to one another via inflation channels. Although the inflatable article can be made from relatively thin films, the article exhibits a relatively high burst pressure and can be inflated to, for example 3 psi, and withstand conditions such as 140° F. and high altitude, without film delamination, seal failure, or film rupture. Preferably, the tie layer comprises an anhydride modified polyolefin having an anhydride content of at least 150 ppm.

Abstract: A method and system for increasing the overall network throughput over a wireless local area network (WLAN). Specifically, in one embodiment of the present invention, the dynamic selection of an initial value for a contention window in the Distributed Coordinated Function (DCF) mode is determined according to the load conditions over the WLAN in a method and system. Stations and access points within a WLAN monitor conditions within the network to establish an initial value for the contention window, also called a minimum contention window value, which is lower than that set by the IEEE 802.11 communication standard. Some factors to consider in determining the load conditions include but are not limited to the following: number of transmissions; number of receptions; and number of collisions.

Abstract: The present invention provides a method and system for using a key lease in a secondary authentication protocol after a primary authentication protocol has been performed. In one embodiment, the primary authentication protocol comprises a strong, secure, computationally complex authentication protocol. Moreover, the secondary authentication protocol comprises a less complex (compared to the primary authentication protocol) and less secure (compared to the primary authentication protocol) authentication protocol which can be performed in a length of time that is shorter than a length of time required to perform the primary authentication protocol. In one embodiment, a wireless client electronic system (WC) completes the primary authentication protocol with a wireless network access point electronic system of a wireless network (AP). When the WC is required to authenticate with another AP, the WC authenticates itself with another AP by using the secondary authentication protocol.

Abstract: An integrated process for making an inflatable laminated article comprises extruding a first film and a second film, followed by cooling the first film and the second film so that the films will not fuse to one another upon contact with each other. The films are then brought into contact with one another, and selected portions of one or both films are heated so that the films are heat sealed to one another in a selected area having a desired pattern. The unsealed area between the film provides inflatable chambers between the first film and the second film. An alternative process utilizes a film tubing in lay-flat configuration to produce a laminated inflatable article.

Abstract: An integrated process for making an inflatable laminated article comprises extruding a first film and a second film, followed by cooling the first film and the second film so that the films will not fuse to one another upon contact with each other. The films are then brought into contact with one another, and selected portions of one or both films are heated so that the films are heat sealed to one another in a selected area having a desired pattern. The unsealed area between the film provides inflatable chambers between the first film and the second film. An alternative process utilizes a film tubing in lay-flat configuration to produce a laminated inflatable article.

Abstract: An integrated process for making an inflatable laminated article comprises extruding a first film and a second film, followed by cooling the first film and the second film so that the films will not fuse to one another upon contact with each other. The films are then brought into contact with one another, and selected portions of one or both films are heated so that the films are heat sealed to one another in a selected area having a desired pattern. The unsealed area between the film provides inflatable chambers between the first film and the second film. An alternative process utilizes a film tubing in lay-flat configuration to produce a laminated inflatable article.

Abstract: The present invention provides a method and system for performing an authenticated Diffie-Hellman key agreement protocol over a network where the communicating parties share a secret key with a third party. In one embodiment, the network is a wireless network, wherein a wireless client electronic system (WC) and a network access point electronic system (AP) are the parties executing the authenticated Diffie-Hellman key agreement protocol. In this embodiment, the WC and the AP exchange a shared secret key for encrypting wireless communications between the wireless client electronic system and the network access point electronic system. In one embodiment, the WC shares a first secret key with a RADIUS server of the network. Similarly, the AP shares a second secret key with the RADIUS server of the network. The first and second secret keys are utilized for performing an authentication protocol.

Abstract: An inflatable cushioning article is made from a multilayer film having a seal layer, a gas barrier layer, and a tie layer adhering the seal layer to the gas barrier layer. The cushioning article has a plurality of inflatable chambers, with each of the chambers having a plurality of cells connected in series to one another via inflation channels. Although the inflatable article can be made from relatively thin films, the article exhibits a relatively high burst pressure and can be inflated to, for example 3 psi, and withstand conditions such as 140° F. and high altitude, without film delamination, seal failure, or film rupture. Preferably, the tie layer comprises an anhydride modified polyolefin having an anhydride content of at least 150 ppm.

Abstract: An integrated process for making an inflatable laminated article comprises extruding a first film and a second film, followed by cooling the first film and the second film so that the films will not fuse to one another upon contact with each other. The films are then brought into contact with one another, and selected portions of one or both films are heated so that the films are heat sealed to one another in a selected area having a desired pattern. The unsealed area between the film provides inflatable chambers between the first film and the second film. An alternative process utilizes a film tubing in lay-flat configuration to produce a laminated inflatable article.

Abstract: Capacitor discharge ignition system having a microprocessor disposed thereon to control the ignition timing of the system. The system has a generator coil, a primary coil and a secondary coil on the same leg portion of a ferromagnetic core. An electronic circuit associated with the microprocessor includes a capacitor adapted to be charged by an intermediate pulse generated by the charge coil with the leading and trailing pulses thereof being input to control the operation of the microprocessor. The circuit also includes an SCR having its anode-cathode path connected in circuit with the capacitor and primary coil and its gate connected to an output port of the microprocessor which also includes an input port to power the microprocessor from the charge coil. Another port of the microprocessor is adapted to receive timing reference inputs from the charge coil.

Abstract: A device for performing agglutination immunoassay reactions and the like is disclosed. The device includes a first hydrophilic layer, a second liquid-occlusive layer parallel to and overlying the first layer, and a third layer parallel to and overlying the second layer. The third layer has a transparent opening for observing particles. The second layer is interposed between and in adherent relationship to the first and third layers. The second layer has at least one slot defining a channel for directing liquid conducted by capillary action through the chamber defined in conjunction with the first and third layers. This chamber has a proximate zone and a distal zone. The geometry of the chamber is modified to provide preferably outwardly diverging walls and provide a flowpath having different rates of flow per unit area along the paths.

Abstract: An improved device for performing agglutination reactions is disclosed. The device has at least one chamber with a proximate zone and a distal zone in which chamber agglutination reactions can be performed. The improvement comprises utilization in the device of a layer of liquid absorbent material for controlling overall rate of liquid flow through the chamber. The layer of liquid absorbent material is selectively impregnated with a substance to form an impregnated region and a non-impregnated region wherein the non-impregnated region is liquid absorbent and the impregnated region is liquid-occlusive. A portion of the non-impregnated region is positioned within the distal zone of the chamber so that the non-impregnated region is in liquid communication with that zone.

Abstract: Integral solenoid and starter motor having four or more poles for internal combustion engines has an electrically conductive disc carried by the armature or core of the solenoid for movement in response to energization and de-energization of the solenoid coil. Three stationary contacts of electrically conductive material are disposed in circumferentially spaced relation about the longitudinal axis of the core for sequential engagement by the movable disc. One of the stationary contacts, connected to an electrical energy source, is disposed at a position closer to the movable disc than the other stationary contacts. The other stationary contacts are connected in parallel circuits to two poles of the starter motor whereby each contact carries one-half the current supplied by the energy source. The disc is tiltably mounted on the core for making initial contact with the first stationary contact and later, with the two other contacts in response to the solenoid being energized.

Abstract: The disclosure describes an ignition coil module for internal combustion engines and method of manufacture thereof. The module is mounted on a ferromagnetic core having a plurality of discrete leg portions with mating cross-bar portions. The module includes an ignition coil encapsulated within a cup-shaped plastic housing which is disposed about the mating portions of the core. A separate trigger coil is also encapsulated within the housing and a separate core pin is axially fitted within the trigger coil. The core pin includes a shank portion and an enlarged pole portion disposed externally of said housing adjacent one of the core legs. The outer ends of the core legs and the pole portion of the core pin, which provides a separate flux path, are disposed approximately on the same circumference adjacent to the permanent magnets carried by a rotor used in conjunction with the ignition coil. The core pin is asymmetrical with its pole portion offset toward the adjacent core leg.

Abstract: An electronic, breakerless ignition system with a grounded cut-off switch has a transformer coil and an electronic ignition circuit in a unitary housing fitted on the core. In an inductive embodiment of the system, a trigger coil is in circuit with the base of a Darlington transistor to control the operation of the transistor in response to flux generated voltage in the trigger coil. The primary winding of the transformer coil has one ground connection and the trigger coil is connected to an entirely separate ground terminal. Each of the terminals is fastened at one end to spaced points on the core. In a capacitor discharge ignition embodiment, one end of the primary winding is connected to a ground terminal and a coil for charging the capacitor is connected at one end to a separate ground terminal.

Abstract: Magnetic holder for keys and the like embodying this invention is in the form of a unitary extrusion of synthetic plastic, magnetic material. The extrusion has a planar web portion, and a key-shaped cut-out is provided through the base portion of said magnetic material. The extrusion includes longitudinal, inwardly opening side edge channels, and the sheet is slidably insertable within said channels as a closure for one side of said key shaped cut-out.Also disclosed is a method of manufacturing such key holders which includes the steps of extruding a unitary, continuous strip of synthetic plastic magnetic material with a planar web portion and inturned longitudinal edge channels. A key-shaped cut-out is punched through the web portion of the magnetic strip, and a flat panel is fitted over one side of the key-shaped cut-out, with the edges of the panel disposed in said channels.

Abstract: A breakerless magneto ignition system having a stator assembly including an ignition coil and core. A solid state gate turn-off switch (GTO) is connected by its anode-cathode electrodes in circuit with the primary winding of the ignition coil for conducting primary current. A solid state switching component is connected in circuit with the control electrode or gate of the GTO and with a capacitor which is charged by current generated in the primary winding in one direction as a result of magneto rotation. The stator assembly includes a trigger coil circumferentially spaced from a leg of the core of the ignition coil a distance approximately equal to the edge distance of the magneto to provide a trigger pulse.

Abstract: Breakerless capacitor discharge ignition system for internal combustion engines in which a charge coil and ignition coil are disposed on ferromagnetic core. A changing flux is established by rotation of permanent magnets past the core. The charge coil is connected to charge a capacitor in circuit with a silicon controlled rectifier (SCR) for discharging the capacitor through the primary winding of an ignition transformer. The charge coil and transformer are wound on the core such that voltages of opposite polarity are simultaneously induced therein by the changing magnetic flux. A half way voltage of one polarity charges the capacitor and a voltage of opposite polarity induced in the secondary winding by the changing magnetic flux triggers the SCR to its conductive state discharging voltage stored on said capacitor through the primary winding of the ignition coil.

Abstract: In a combined capacitor discharge ignition and alternator auxiliary power system for an internal combustion engine, voltage pulses for charging a capacitor, other voltage pulses for triggering an SCR, and still other voltage pulses for producing an alternating auxiliary power output are provided by a single generator having an engine driven rotor providing an array of magnetic pole faces regularly spaced and of alternating magnetic polarity along a circular path of movement. A stator carries a charge coil, a trigger coil, and at least one auxiliary power coil adjacent the circular path so that a repetitive series of charge pulses, a repetitive series of trigger pulses, and a repetitive series of auxiliary power pulses are induced respectively in the charge coil, the trigger coil, and the auxiliary power coil each time the array passes said coils. The rotor also includes a space, along the circular path, within which no magnetic pole face appears.

Abstract: A breakerless condenser discharge ignition system for an internal combustion engine and excited by a rotating permanent magnet, consists of a single module, containing a number of windings and electrical components, mounted on one pole of a ferromagnetic core for producing high voltage output pulses for firing an associated spark plug.