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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7643267 | Optical emission spectrometry device An optical emission spectrometry device is provided. In the optical emission spectrometry device, a discharge path is formed by connecting an ignition circuit to a discharge gap, and further connecting in parallel a plurality of sets of coils and driving circuits, e... | 01/05/2010 |
| 7355300 | Solid state turbine engine ignition exciter having elevated temperature operational capability A turbine engine ignition exciter circuit applies energy stored in the exciter tank capacitor to the load (igniter plug) through a thyristor type semiconductor switching device that minimizes leakage current at elevated operating temperatures. The semiconductor swit... | 04/08/2008 |
| 7329837 | Ceramic igniters Ceramic igniters are provided that comprise at least three zones of differing electrical resistance, preferably in sequence a first conductive zone of relatively low resistance, a power booster or enhancement zone of intermediate resistance, and a further hot or ign... | 02/12/2008 |
| 7291983 | Ballast and igniter for a lamp having larger storage capacitor than charge pump capacitor A ballast according to the present invention operates in an ignition state, a warm-up state, and a steady state for igniting and powering a lamp. The ballast comprises an igniter that ignites the lamp during the ignition state and a switching power inverter, for exa... | 11/06/2007 |
| 7170198 | Trigger arrangement for a Marx generator In trigger/firing arrangement in a Marx generator comprising n stage capacitors—n being a natural number greater than 1-, the same amount of spark gaps and 2(n−1) charging branches, with the spark gaps operating in a self-breakdown mode, the trigger-/firing arra... | 01/30/2007 |
| 7130180 | Partitioned exciter system A partitioned exciter system for use with an igniter in an aircraft engine. The exciter has low-energy charging circuit and a high-energy discharge circuit that are remotely located from each other and that are connected by a low-energy coaxial cable. The charging c... | 10/31/2006 |
| 7102870 | Systems and methods for managing battery power in an electronic disabling device An electronic disabling device includes first and second electrodes positionable to establish first and second spaced apart contact points on a target having a high impedance air gap existing between at least one of the electrodes and the target. The power supply ge... | 09/05/2006 |
| 7099131 | Surge absorber and surge absorber array A surge absorber includes a laminated compact of a first ceramic green sheet having a first internal electrode film extending to both sides thereof, a second ceramic green sheet having an second internal electrode film extending to both end surfaces thereof, and a t... | 08/29/2006 |
| 7061363 | Passive, high-temperature-resistant resistor element for measuring temperature in passenger and commercial vehicles A passive, high-temperature-resistant resistor element for measuring temperature is provided, the resistor element having an essentially interior insulating layer and two exterior conducting layers of a ceramic composite structure; the conducting layers being connec... | 06/13/2006 |
| 6999295 | Dual operating mode electronic disabling device for generating a time-sequenced, shaped voltage output waveform An electronic disabling device includes first and second electrodes positionable to establish first and second spaced apart contact points on a target having a high impedance air gap existing between at least one of the electrodes and the target. The power supply ge... | 02/14/2006 |
| 6949717 | Plug heater for a pencil-type glow plug and corresponding glow plug A pin heater in a sheathed-element glow plug and a sheathed-element glow plug for internal combustion engines, which have improved electrical and mechanical properties, are described. The pin heater has at least one essentially internal insulating layer and one esse... | 09/27/2005 |
| 6933471 | Ceramic igniters with sealed electrical contact portion Robust ceramic igniters are provided that include an improved sealing system which can significantly enhance operational life of the igniter. Preferred igniters comprise a conductive cold zone and hot zone with higher resisitivity. A hermetic sealant material covers... | 08/23/2005 |
| 6690566 | Trigger circuit for Marx generators A trigger circuit is provided for a trigger system for a Marx generator column. The column includes a plurality of metal electrode pairs wherein the electrodes of each pair are spaced to form a spark gap therebetween and a capacitor is connected across ea... | 02/10/2004 |
| 6662793 | Electronic circuits for plasma-generating devices A circuit for providing a follow-on current between the electrodes of a traveling spark ignitor after an initial break down between the electrodes has occurred is disclosed. The circuit may include first and second portions which, respectively, provide fi... | 12/16/2003 |
| 6545478 | Electronic ignition device for an engine The electronic ignition device includes an ignition coil with a primary winding terminal and a secondary winding terminal generating a spark, a power element arranged between the primary winding terminal and ground, a protection circuit issuing a disable ... | 04/08/2003 |
| 6292347 | Electric arc generation circuit A circuit of electric arc generation from an A.C. voltage, includes circuitry for making the electric arc frequency substantially independent from possible amplitude variations of the A.C. voltage.... | 09/18/2001 |
| 6249434 | Surface mounted conduction heat sink A system and method for conducting heat from electrical devices mounted on a circuit board is disclosed. A heat sink for conducting the heat is provided that includes a pair of substantially parallel vertical legs and a horizontal member coupled between t... | 06/19/2001 |
| 6052270 | Ignition system An ignition system has a first capacitor connected by a switch to the primary windings of a transformer. The secondary windings of the transformer are connected via a rectifier circuit to a second capacitor. An igniter is connected to the second capacitor... | 04/18/2000 |
| 5992401 | Capacitive discharge ignition for an internal combustion engine A capacitive discharge ignition system deriving the ignition pulse from a capacitor storing the flyback voltage induced from the fuel injector coil when the pulse supplied to the fuel injector coil is removed.... | 11/30/1999 |
| 5936830 | Ignition exciter for a gas turbine engine and method of igniting a gas turbine engine An ignition exciter for an engine, comprising a pulse generator for generating output pulses for an igniter plug, and an oscillator for repeatedly triggering the pulse generator at a repetition rate such that each output pulse is produced before ionizatio... | 08/10/1999 |
| 5862033 | Exciter circuit An ignition system exciter circuit includes a storage capacitor; a charging circuit for charging the capacitor; a discharge circuit connectable to an igniter plug; and a first switching circuit for controlling discharge of the capacitor through the discha... | 01/19/1999 |
| 5777867 | Electric discharge method and apparatus Herein disclosed are a method and an apparatus for supplying an electrical energy to a pair of discharge electrodes spaced apart from each other to cause an electric discharge in a gap between the discharge electrodes. There are firstly provided an altern... | 07/07/1998 |
| 5654868 | Solid-state exciter circuit with two drive pulses having indendently adjustable durations A solid-state exciter circuit for establishing arc discharges in igniter devices. The exciter circuit includes first and second transformers, first and second main discharge capacitors, and first and second exciter sub-circuits for controlling the chargin... | 08/05/1997 |
| 5621278 | Ignition apparatus A charging circuit charges a first capacitor to a first voltage and a second capacitor, via a potential divider to a second voltage smaller than the first voltage. A trigger circuit repeatedly triggers a thyristor which discharges the second capacitor int... | 04/15/1997 |
| 5506478 | AC ignition system with optimized electronic circuit In an alternating current ignition system whose ignition output stage has an ignition coil, a resonant-circuit capacitor for generating a bipolar alternating current, a semiconductor switch for controlling the primary coil current and an energy recovery d... | 04/09/1996 |
| 5471362 | Corona arc circuit A corona arc circuit has a spark plug connected in series with a rectifier. A capacitor is connected in series with a spark gap and the spark plug. An electrical power source has a transformer with a primary winding providing an AC voltage and a secondary... | 11/28/1995 |
| 5440445 | High-energy ignition generator in particular for a gas turbine A low-energy circuit and a high-energy circuit are operatively coupled in parallel between an energy source and an igniter. The low-energy circuit is for igniting the igniter to generate sparks between electrodes of the igniter, and the high-energy circui... | 08/08/1995 |
| 5347422 | Apparatus and method for an ignition system An ignition system is provided that marries a free-running discharge circuit with a fast-charging, high voltage converter without resulting in an excessive rate of discharge. To this end, the free-running discharge circuit employs a passive switch embodie... | 09/13/1994 |
| 5224015 | High energy ignition generator in particular for a gas turbine An ignition generator includes an energy source having a transformer, and a first circuit connected to a first secondary winding of the transformer. The first circuit includes a series connection of a first energy storage capacitor, an inductor and an ign... | 06/29/1993 |
| 5191508 | Ceramic igniters and process for making same A process for producing a ceramic igniter comprising forming a slot in a green igniter body prior to densification and inserting into the slot an electrically non-conductive material is described. In addition, a ceramic igniter containing a slot insert pr... | 03/02/1993 |
| 5084800 | Ignition transformer secondary winding by-pass apparatus In a capacitive discharge type ignition apparatus, in which an ignition transformer is used, the impedance of the secondary winding of the ignition transformer is comparatively large. This means the power loss is large and the efficiency, in applying a hi... | 01/28/1992 |
| 5053913 | Capacitive discharge ignition exciter using SCR discharge switches An exciter circuit for a gas turbine engine ignition system. A high voltage supply continuously charges a storage capacitor. A plurality of silicon controlled rectifiers (SCRs) are connected in series between the storage capacitor and a high voltage condi... | 10/01/1991 |
| 5044348 | Igniter for an internal combustion engine An igniter for an internal combustion engine has a plurality of drive circuits for generating an ignition voltage in the secondary winding of an ignition coil. A high-voltage diode is connected in series between the secondary winding of the ignition coil ... | 09/03/1991 |
| 5032969 | Turbine engine igniter exciter circuit An improved turbine engine igniter exciter circuit. An oscillator circuit drives the primary winding of a transformer for charging a capacitor to a predetermined voltage greater than the voltage required to sustain a spark discharge at an igniter but less... | 07/16/1991 |
| 4983886 | High-energy ignition generator especially for a gas-turbine This high-energy ignition generator, especially for gas-turbines, of the type including an energy source (1) connected to a first circuit containing an energy storage capacitor (10), an inductor (11) and an ignition plug (12), in series, a free-wheel diod... | 01/08/1991 |
| 4681529 | Automatic electronic ignition system An automatic electronic ignition system comprising a D.C. source, an oscillatory circuit, a charging circuit and a sparking device. The D.C. source activates the oscillatory circuit. By means of a first transformer, this oscillation induces a current sign... | 07/21/1987 |
| 4614993 | Operation control apparatus in a combustion device An operation control apparatus, in a combustion device, comprising an operation member (4) selectively settable at a stop position (A), an ignition position (B) or an open position (C); an electric member (10) and/or (15) which is energized by an electric... | 09/30/1986 |
| 4561707 | Current-sheet inductor network and pulse-forming systems An electrical energy storage and transforming device and associated pulse-forming systems suitable for receiving, storing, and transforming an electrical charge to produce electrical output pulses, for example, ignition pulses for a spark-ignition interna... | 12/31/1985 |
| 4454560 | Ignition detector circuit An ignition detector circuit includes first and second resistors connected in series between a primary winding of a coil and the ground, a comparator having a first input terminal connected to the junction between first and second resistors and a second i... | 06/12/1984 |
| 4402036 | Method of producing a high energy plasma for igniting fuel A combustion initiation system includes an initiating device for producing, containing and propelling a combustion initiating plasma having an energy density approaching that produced by combustion of the fuel itself, and is suitable for initiating combus... | 08/30/1983 |
