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 |
| 7643266 | Trigger circuit for an electromagnetic actuator A trigger circuit comprises a first series circuit (16) defined by an electronic switch (17) and an electromagnetic actuator (10). A second series circuit (18) defined by a resistor (19) and a sensor (20) responding to dange... | 01/05/2010 |
| 7352545 | Compressor terminal fault interruption method and apparatus A compressor terminal fault interruption method and interrupter for disconnecting power to a compressor terminal when terminal venting failure is imminent including a current sensing circuit for sensing current provided to the terminal by a power source and outputti... | 04/01/2008 |
| 7118020 | Stapler A stapler is provided for stapling decorative staples into a sheet media, where the decorative staples have an indicia platform and a plurality of prongs. The stapler includes a base and a cartridge assembly pivotably mounted to the base. The cartridge assembly has ... | 10/10/2006 |
| 7064705 | Method of and apparatus for increasing the peak output pulse power delivered by capacitor-driven high-power diode and square-loop saturable reactor pulse compression generators with the aid of minority carrier sweep-out circuits within the pulse compression circuit A technique and apparatus for increasing the peak output pulse power of a capacitor driven high-power diode and square-loop saturable reactor pulse compression generator or transmitter (such as a Loran-C transmitter or other high power pulse generator) with the aid ... | 06/20/2006 |
| 6992612 | Infrared hand-held remote control An infrared hand-held remote control for handling a single or plural devices such as lights, shades, drapes and the like contains ergonomically selected and placed control buttons that are self-describing and easy to use. It allows explicit, easy-to-use control of d... | 01/31/2006 |
| 6963087 | Pulsed bistable bidirectional electronic switch The invention concerns a pulsed bistable bidirectional electronic switch comprising a monolithic semiconductor circuit formed from a substrate (1) whereof the rear surface (A2) is coated with a metallization connected to earth. Said circuit comprises a... | 11/08/2005 |
| 6445561 | Circuit arrangement, in particular for triggering an ignition end stage A circuit arrangement, in particular for triggering an ignition output stage, having a power switching transistor and a switchable freewheeling circuit or an auxiliary channel. The freewheeling circuit or the auxiliary channel may be constituted by a trig... | 09/03/2002 |
| 5946182 | Power supply circuit for an electromagnetic coil having low DC and high AC voltage supply Power supply circuit for a single-winding electromagnet coil (11) comprising a low voltage DC power supply (20) and a high voltage AC power supply (30) both connected to the terminals of the winding (11), together with a switching apparatus (40) connected... | 08/31/1999 |
| 5835331 | Half-wave drive circuit for meter disconnect switch A very low cost method of driving the coil of a meter disconnect switch utilizes the 60 Hz signals from an existing power supply rectifier to generate properly phased gate drive signals to SCRS, with only one stage of isolation.... | 11/10/1998 |
| 5734544 | Solid-state pulse generating apparatus and method particularly adapted for ion implantation A relatively wide d.c. pulse generating system providing rise times normally attainable only with much narrower pulse width generation, comprising a plurality of sequentially operated groups of d.c. pulse generating modules achieving the combination of ze... | 03/31/1998 |
| 5585997 | Hydrogen thyratron modulator A single resonant DC charging circuit provides both the power and timing for the pedestal insertion is, likewise, controlled by a single trigger circuit input and by a saturable reactor which controls the firing of a thyratron switch.... | 12/17/1996 |
| 5486972 | AC powered electrical control device with logic level control The coil of an electric control device is energized by ac power controlled by a remotely generated logic level signal through a control module mounted in a cavity in the exterior of the device housing. The module contains a pair of back-to-back silicon co... | 01/23/1996 |
| 5461563 | Non-stage transmission control system In a non-stage transmission control system, the output current instruction signal of a microcomputer is provided as a pulse-width-modulated signal, with a result that the number of signal lines from the microcomputer is reduced. Furthermore, the current f... | 10/24/1995 |
| 5305176 | Inductive load drive circuit An inductive load drive circuit includes a transistor having a collector and emitter current path interposed between an inductive load and a constant current source, and a feedback circuit. The feedback circuit has a Zener diode and a resistor which are c... | 04/19/1994 |
| 5287243 | Circuit device for electromagnetic switch Disclosed is a circuit device enabling an electromagnetic switch to be used with an A.C. power source. And the coil is thereof provided with a more stable electromagnetic field. The circuit device includes a releasing voltage detecting circuit, an engagin... | 02/15/1994 |
| 5251091 | Solenoid driving circuit for automatic transmission A solenoid driving circuit for an automatic transmission in which a potential difference compensating device, such as a Darlington-connected transistor circuit, switching transistor, and/or diode, is connected between a resistance element and a power grou... | 10/05/1993 |
| 5247418 | Arc suppressing switch An arc suppressing switch having a plurality of discrete conductors operative to allow a flow of electricity between a pair of terminals along each of the plurality of discrete conductors when the switch is closed. The conductors are oriented to distribut... | 09/21/1993 |
| 5162682 | Solid state relay employing triacs and plurality of snubber circuits A solid state relay comprising an input terminal, an optical coupler, a reference voltage circuit, a light dependent resistor circuit, a triac driver circuit, a triac circuit, an output terminal and a snubber circuit, and being constructed in such a way t... | 11/10/1992 |
| 5134537 | Negative voltage clamp circuit for controlling currents in inductive loads A circuit capable of driving inductive loads below a chip substrate voltage level while minimizing on-chip power dissipation and eliminating parasitic effects. Two negative voltage drive modes are included in the circuit design. The first drive circuit fo... | 07/28/1992 |
| 5128825 | Electrical contactor with controlled closure characteristic A microprocessor controlled electrical contactor monitors the voltage and peak current produced by a first voltage pulse gated to the coil of the contactor electromagnet and adjusts the conduction angle of the second pulse to deliver a constant amount of ... | 07/07/1992 |
| 4998177 | Electromagnetic solenoid drive apparatus in a vehicle An electromagnetic solenoid drive apparatus for use in a vehicle for turning on an electromagnetic solenoid from a battery every time when a command switch is turned on comprises first and second resistors connected in series to each other on an electric ... | 03/05/1991 |
| 4933806 | Method and device for controlling an electromagnet whose energization, by means of a monoarch periodic current, causes actuation of a mobile part The invention provides a device for controlling an electromagnet having a coil (L) connected to a monoarch periodic current supply source, through a controllable switch (TH). This switch (TH) is controlled by a control circuit comprising a member for dete... | 06/12/1990 |
| 4885658 | Apparatus for controlling the operation of an electromagnetic fuel intake or exhaust valve of an internal combustion engine The invention relates to solid-state circuitry, including a freewheeling circuit, for controlling the operation of an electromagnetically actuated fuel intake or exhaust valve of an internal combustion engine by alternatingly energizing, by way of a curre... | 12/05/1989 |
| 4833565 | Electromagnetic contactor with algorithm controlled closing system An electromagnetic contactor or controller is taught in which the voltage which is impressed across the electromagnetic armature winding is controlled with an algorithm to enhance the closing operation. A microprocessor is utilized to implement the algori... | 05/23/1989 |
| 4771358 | Magnetic chuck controller In the magnetic chuck control disclosed herein, the chuck winding is selectively energized in one direction or the other through respective triggerable semiconductor current switching devices. Successively reducing current levels are applied in successive... | 09/13/1988 |
| 4720763 | Electromagnetic contactor with control circuit for providing acceleration, coast and grab functions An electromagnetic contactor or controller is taught in which the voltage which is impressed across the electromagnetic armature accelerating coil is compared by a microprocess against a menu of memory stored voltages with related delay angles. The delay ... | 01/19/1988 |
| 4720761 | Electromagnetic contactor with current regulated electromagnetic coil for holding the contacts closed An electromagnetic contactor is taught which includes a conduction angle controlled triac or similar gated device which is connected in series circuit relationship with the winding of an electromagnetic solenoid or coil which is responsible for closing th... | 01/19/1988 |
| 4675776 | Bistable undervoltage release circuit for circuit breakers A control circuit combined with a magnetically bistable solenoid armature provides a bistable undervoltage release function to a circuit breaker. The solenoid is fabricated from a material having high magnetic remnance and low coercivity. A first signal t... | 06/23/1987 |
| 4674022 | SCR priming and sweep-out circuit apparatus An improved priming and sweep-out circuit in which losses are obviated or minimized by transferring energy resulting from such processes back to the power supply, and wherein a single common storage inductance is used in a secondary winding circuit of a s... | 06/16/1987 |
| 4630166 | A.C. power control for D.C. solenoid actuators An A.C. power control circuit for a D.C. solenoid actuator which may be used for a solenoid operated valve uses a triac circuit to initially apply A.C. line voltage to energize the solenoid coil of the valve to be actuated to provide valve pull-in power. ... | 12/16/1986 |
| 4626956 | Electromagnetic feeder drive control apparatus An electromagnetic feeder drive control apparatus includes a drive control circuit composed of a microcomputer for producing a timing signal to control the on/off timing of a switching element on the basis of a signal produced by a sensor upon sensing tha... | 12/02/1986 |
| 4617603 | Degaussing system for bulk demagnetization of previously magnetized materials The item to be demagnetized is placed in a chamber surrounded by electrical windings defining a pair of coils that are disposed in a mutually orthogonal configuration. Currents for the two coils are developed in a microprocessor-controlled inverter circui... | 10/14/1986 |
| 4543493 | Electric control circuit Apparatus for switching alternating current from a power source to a load for substantially all of one selected half-cycle, but not before at least one full cycle after the apparatus receives an operator command to switch the current, includes a mechanica... | 09/24/1985 |
| 4528557 | Brush wear indicator A motor brush wear indicator includes a probe embedded in a brush and connected in the primary circuit of a transformer for completing the secondary circuit when the brush has worn to a predetermined degree. An oscilator is coupled to the secondary of the... | 07/09/1985 |
| 4517620 | Electrical feed and control circuit for the pump piston of a spray gun An electrical feed and control circuit for a drive arrangement of the pump piston of a spray gun which comprises a coil and an oscillating armature, employs an input for connection to an alternating current network, an output leading to the oscillating ar... | 05/14/1985 |
| 4492880 | Driver circuit A driver circuit which is responsive to an input AC voltage for providing a drive signal to a load circuit for each activation of a switch. A triggering signal generated by a trigger circuit in response to the activation of the switch energizes a timing c... | 01/08/1985 |
| 4490771 | Control circuit arrangement for an electromagnetically operated power tool A control circuit arrangement for an electromagnetically operated power tool has a primary circuit including a solenoid and a semi-conductor switch, in series, the semi-conductor switch being capable of being triggered into a conducting state upon applica... | 12/25/1984 |
| 4475140 | Switching amplifier with high impedance input A power control relay with a solid state switching device being arranged to control the current to the coil of the relay in a series circuit therewith can be operated safely and reliably in manufacturing environments by control thereof with a floating vol... | 10/02/1984 |
| 4449161 | One shot firing circuit for power tools A one shot firing circuit for electrically powered tools is described which includes a manually operable normally open trigger switch connected electrically in series with a solenoid coil and an AC power source for controlling the supply of electrical pow... | 05/15/1984 |
| 4447849 | Electromagnetic control circuit A control circuit is disclosed for limiting the polarity and duration of current flowing through an electromagnetic device which is coupled to an alternating current potential source. The control circuit is coupled in series with the electromagnetic devic... | 05/08/1984 |
