Electromagnetic Patents (Class 123/154)
  • Publication number: 20040255888
    Abstract: A spark discharging device that sparks on the closing of contacts carrying high current. In one embodiment, a capacitor is discharged to provide a short pulse of high current upon making contact between one movable electrode to the capacitor and a ground electrode. A solenoid coil energized from the engine's electrical system is operated in synchronism with the movement of the engine's piston. A solenoid drives a plunger and movable electrode tipped with a contact portion so the contact portion moves into engagement with a ground electrode connected to the return circuit. The movable electrode is coupled to the charged capacitor located within or external to the spark discharger housing. It is emphasized that this abstract is provided to comply with the rules requiring an abstract. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims (37 C.F.R. 1.72(b)).
    Type: Application
    Filed: March 15, 2004
    Publication date: December 23, 2004
    Inventor: Matthew J. Tuohy
  • Patent number: 4850316
    Abstract: A contact-breaking ignition plug comprises a magnet coil arranged in a housing and surrounding a magnet core. The magnet core comprises an enlarged end portion with lateral surfaces extending conically in relation thereto and also comprises a cavity in which an armature is movably arranged. The armature is mounted on a rod in asymmetrical relation to a longitudinal center plane of the cavity and in transverse relation to the direction of compression pressure propagation. These features induce a concentration of the magnetic effect in the armature region and cause the contact-breaking motion to be augmented by the compression pressure. Respective contact electrodes are exchangeably mounted at each of the free end of the armature and a nose of the housing.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: July 25, 1989
    Assignee: Lacrex Brevetti SA
    Inventor: Max Pasbrig
  • Patent number: 4757788
    Abstract: An ignition system for an internal combustion engine has one electrode in the cylinder movable with respect to the other, under the control of an external solenoid, or other operable device. The solenoid or other device is actuated, and the current to the electrodes is derived from the collapsing field of an inductor. A diode inhibits other than discharge current of said inductor from flowing to said electrodes.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: July 19, 1988
    Inventor: Sylvan Simons
  • Patent number: 4509469
    Abstract: A break ignition plug for piston engines wherein an electromagnet acts upon an armature which activates a movable electrode and an ignition pulse passes through the magnet coil of the electromagnet and a short-circuit path between the electrodes. The magnetic field which builds-up in the electromagnet causes breaking of the short-circuit path and spark formation. At the free end of blade or band springs arranged in spaced relationship from one another at the lengthwise axis of the ignition plug there are provided confronting electrode heads. The blade springs are retained at the magnet core and freely protrude by means of the electrode ends into a hollow space or chamber formed at a threaded portion of the ignition plug. At a magnet gap region of the core there are formed at the blade springs armatures which repel one another upon excitation of the electromagnet.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: April 9, 1985
    Assignee: Lacrex Brevetti S.A.
    Inventor: Max Pasbrig