"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 7171948 | Ignition device for internal combustion engine A capacitor-discharge-type ignition device for an internal combustion engine, comprising: an exciter coil that generates an AC voltage having a positive half-wave voltage and first and second negative half-wave voltages present before and after the positive half-wav... | 02/06/2007 |
| 7028676 | Inductive ignition system for internal combustion engines The ignition system for internal combustion engines includes a rotor and an armature having an ignition coil in which voltage signals, each having pulses of opposite polarities are cyclically induced during each rotor revolution; a control unit for the ignition curr... | 04/18/2006 |
| 7017565 | Supplemental capacitive discharge ignition system A capacitive discharge ignition system for initiating combustion during cold- and hot-ignition of an internal combustion engine requiring minimal mechanical energy input. The capacitive discharge ignition system includes a magneto having a rotor, a first capacitive ... | 03/28/2006 |
| 6973911 | Method and device for controlling ignition timing of ignition device for internal combustion engine The invention simplifies the structure of a magneto generator and stabilizes the operation of an internal combustion engine at the time of start-up, thereby providing an ignition device simplified in structure and reduced in size and providing improved safety to the... | 12/13/2005 |
| 6932064 | Capacitor discharge ignition A capacitor discharge ignition (CDI) system includes a trigger circuit that generates a trigger signal in synchronism with operation of an engine for discharging an ignition capacitor. A timing circuit is connected to the trigger circuit for controlling the timing o... | 08/23/2005 |
| 6889677 | Capacitor discharge ignition device for internal combustion engine A capacitor discharge ignition device for an internal combustion engine including an ignition capacitor that is charged with a positive half cycle of an output voltage of an exciter coil, a thyristor that is triggered by a negative half cycle of an output voltage of... | 05/10/2005 |
| 5954027 | Sensor for engine control A number of embodiments of ignition systems and specifically a combined charging and triggering device that utilizes a single winding and a core having a pair of ends that are juxtaposed to a rotating magnet. A number of different embodiments are illustra... | 09/21/1999 |
| 5513619 | Discharge ignition apparatus for internal combustion engine An improved capacitive discharge ignition system utilizes a permanent magnet assembly revolving in synchronism with operation of an internal combustion engine to generate spark energy. The relatively high voltage necessary to initiate an ignition spark is... | 05/07/1996 |
| 5050553 | Capacitor ignition system A capacitor ignition system for internal combustion engines, particularly for lawn mowers, chain saws, abrasive cutting-off machines, etc., has a magnetic generator for triggering a primary firing pulse generator to charge a capacitor. An electronic switc... | 09/24/1991 |
| 5046468 | Method and system with inductive rotary emitter for the control especially of the ignition timing of internal combustion engines Inductive rotary emitter for controlling the instant of ignition of internal combustion engines, has a coil with a permanent magnet core and a yoke wheel turned by a shaft. Circumferentially distributed projecting, spaced, tooth-like segments on the yoke ... | 09/10/1991 |
| 4949696 | Capacitor ignition systems Capacitor ignition systems for internal combustion engines in which a charging winding forms part of an ignition coil and a primary winding is connected in circuit with the charging winding to contribute to capacitor charging. In one embodiment, the secon... | 08/21/1990 |
| 4697570 | Electronic ignition circuit with automatic control advance An electronic ignition system for a magneto-operated internal combustion engine eliminates Zener diodes as nonlinear elements for control of the advance and employs a unilateral switch utilizing a diode feedback element to provide a logarithmic response f... | 10/06/1987 |
| 4610237 | Ignition circuit, especially for magneto-triggered internal combustion engines An electronic ignition circuit for a magneto engine utilizes a nonlinear network which responds to the low voltage signal developed in the magneto to control an electronic switch triggering the discharge of a capacitor through a high voltage coil for firi... | 09/09/1986 |
| 4566425 | Ignition system of the condensor-discharge type for internal combustion engine An ignition system of the condensor-discharge type for an internal combustion engine is disclosed which is capable of preventing delay of the ignition position at a high engine speed due to an armature reaction and preventing generation of ignition spark ... | 01/28/1986 |
| 4449497 | Capacitor discharge ignition system A capacitor discharge ignition system is provided with a control arrangement to prevent operation of an engine at excessive speeds. For example, when the engine exceeds a predetermined speed of operation, the control arrangement is effective to terminate ... | 05/22/1984 |
| 4370959 | Two stroke cycle engine with sustained power stroke A two-stroke cycle internal combustion engine has a sustained power stroke which results from delayed mixing of a stratified charge. Use of delayed mixing of an overall stoichiometric air-fuel mixture results in formation of a low amount of the oxides of ... | 02/01/1983 |
| 4343273 | Ignition system with overrun prevention An ignition system of the capacitor discharge type and capable of preventing overrunning of an internal combustion engine includes a control circuit to render a switching transistor connected to a gate-cathode circuit of a main thyristor conductive for a ... | 08/10/1982 |
| 4285321 | Capacitor discharge ignition system 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 ... | 08/25/1981 |
| 4232646 | Ignition system for internal combustion engines with a magneto generator An ignition system for internal combustion engines in which a capacitor is charged at each one-polarity half-cycle of the output of a magneto generator and then the capacitor is discharged through a thyristor and a primary coil of an ignition coil when th... | 11/11/1980 |
| 4141331 | Breakerless capacitive discharge ignition system A breakerless capacitive discharge ignition system is provided for use in connection with a magneto power supply. A time delay circuit is provided to delay discharge of the capacitor until it is completely charged by a pulse of electrical energy being emi... | 02/27/1979 |
| 4108131 | Capactive discharge ignition circuit A capacitive discharge ignition circuit for an internal combustion engine employs a magneto generating an alternating voltage, synchronized with the operation of the engine, across its output terminals. One of the output terminals is connected to a storag... | 08/22/1978 |
| 4056088 | Ignition system A capacitive discharge ignition system having a charge coil and an ignition coil including primary and secondary windings wound on a common stator structure. The charge coil is coupled to the primary winding of the ignition coil by an SCR and a main capac... | 11/01/1977 |
| 4015564 | Ignition system for internal-combustion engines having timing stabilizing means Ignition in a six-cylinder internal combustion engine is supplied by a pair of similar alternator-driven, alternate-firing, capacitor discharge ignition systems, each discharged to the several spar k plugs of its own three cylinders by individual controll... | 04/05/1977 |