Bizarre Patents
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 |
| 8395333 | Electro magnetic ballast for a gas discharge lamp An electro magnetic ballast (110) for a gas discharge lamp (2) comprises: input terminals (3), for receiving a mains voltage; lamp connector terminals (4), for receiving a lamp; a controllable semiconductor switch (26) coupled in p... | 03/12/2013 |
| 7023004 | Multi-mode electromagnetic radiation emitting device A multi-mode electromagnetic radiation emitting device comprising at least one source of electromagnetic radiation which emits radiation according to predefined or programmable user selectable instruction sets is disclosed. Reversal of the polarity of the device's p... | 04/04/2006 |
| 6958583 | AC voltage control circuit The inventive control circuit 40 serves to render the output voltage to be the output value of any one of the outputs OUT1 to OUT5 when both the main power source A of the power saving device 100 and the control circuit's switch B are in ... | 10/25/2005 |
| 6949885 | Discharge lamp lighting device and lighting apparatus A discharge lamp lighting device includes a discharge lamp that is lighted through an L-C resonance induced by an oscillation output of an inverter circuit. An on-off operation of switching elements of the inverter circuit is controlled by a control IC which include... | 09/27/2005 |
| 6949893 | Television receiver and cold-cathode tube dimmer In a cold-cathode dimmer, a current detector includes a LPF for removing the frequency component of a lighting/driving signal for a lighting driver from the output of a diode for rectifying the voltage across a current detecting resistor and passing the frequency co... | 09/27/2005 |
| 6144539 | Arrangement for protecting low-voltage control circuitry from externally applied high voltages, and dimming ballast employing such an arrangement An arrangement for protecting low-voltage control circuitry from externally applied high voltages comprises a voltage source (30) and a current-sourcing circuit (40). Current-sourcing circuit (40) provides current to an external controller (18) in a norma... | 11/07/2000 |
| 6040663 | Circuit arrangement In a multiresonant DC--DC converter provided with a switching element (S1), a transformer (T) and a rectifier coupled to the secondary winding (S) of the transformer, the rectifier is constructed as a diode bridge (D1, D2, D3, D4). It is achieved thereby ... | 03/21/2000 |
| 5568018 | Fluorescent light ballast circuit An improved fluorescent light ballast circuit extends the on/off life of a florescent lamp within a lighting circuit having a pair of series connected fluorescent lamps. The ballast circuit includes a DC pulse generation circuit, filtering and voltage reg... | 10/22/1996 |
| 5387847 | Passive power factor ballast circuit for the gas discharge lamps A ballast for a gas discharge lamp circuit has a d-c output which contains three series-connected diodes connected across the output terminals, a pair of capacitors connected from different respective nodes of the diodes to respective ones of the output t... | 02/07/1995 |
| 4506194 | Cathodoluminescent light sources and electric lighting arrangements including such sources In a cathodoluminescent lamp of the type having an electrically conductive coating forms the anode on the interior surface of the bulb wall, a phosphor coating overlies the anode coating and an electron emissive cathode below a grid, the lead to the anode... | 03/19/1985 |
| 4491766 | High pressure electric discharge lamp employing a metal spiral with positive potential A high intensity discharge lamp, for example a high pressure sodium or sodium halide lamp, which utilizes a refractory metal spiral with positive electric potential applied to it positioned around the arc tube to aid in starting and inhibit sodium migrati... | 01/01/1985 |
| 4143303 | Spark ignition circuits A spark ignition circuit comprising a first capacitor arranged to be charged from a mains power supply through rectifying means and discharged through the primary of a transformer to produce sparking across a spark gap in the secondary circuit of the tran... | 03/06/1979 |
| 4074202 | Biasing circuit for thyratron A thyratron is provided with at least one pair of adjacent electrodes separating two voltage withstanding gaps. In order to reduce the likelihood of voltage breakdown occurring across one of the gaps that electrode of a pair of adjacent electrodes which i... | 02/14/1978 |
| 4017702 | Microwave oven including apparatus for varying power level Apparatus for varying microwave power level is included in a microwave oven. The microwave oven includes a magnetron for producing microwaves used for heating and a half-wave voltage doubler for supplying half-wave pulsating DC voltage to the magnetron. I... | 04/12/1977 |
