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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 5962984 | High intensity lighting circuit To provide a high intensity lighting circuit of improved efficiency and reduced electromagnetic interference generation, a DC xenon lamp is driven by a three phase AC source through a three phase, full wave bridge rectifier.... | 10/05/1999 |
| 4885671 | Pulse-by-pulse current mode controlled power supply A power supply for a Xenon lamp of a projection television includes a pulse-width-modulator that is included in a power regulating outer feedback loop and in a current-mode inner feedback loop. A current sensing transformer, responsive to a current in a c... | 12/05/1989 |
| 4870421 | Regulating switch for transmitting modules in a phased array radar The invention relates to compact means for turning power on and off and regulating that power as it is supplied to a pulsed transmitting module in a phased array radar system. The arrangement comprises an operational amplifier, which compares the voltage ... | 09/26/1989 |
| 4806937 | Power distribution system for a phased array radar The invention relates to the distribution of power and control commands to a plurality of pulsed T/R modules coupled to the antenna elements of a phased array radar and arranged in rows and columns. The novel power distribution system includes a large num... | 02/21/1989 |
| 4560909 | Dual load remote power control for a ceiling fan An arrangement is disclosed for controlling the power applied to two remote loads energized from a common ac line. An example is a circuit for controlling fan speed and lamp brightness, both loads being installed in a common ceiling fixture, and requiring... | 12/24/1985 |
| 4500821 | Speed or torque control circuit for an electronically commutated motor (ECM) and method of controlling the torque or speed of an ECM In a motor speed or torque control circuit for an electronically commutated motor (ECM) used in a ceiling fan, a pulse width modulator operating at an above audible pulse repetition rate is used in combination with means to adjust the motor voltage to ach... | 02/19/1985 |
| 4495446 | Lighting unit with improved control sequence An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The lighting unit utilizes a metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source.... | 01/22/1985 |
| 4494055 | Control circuit for an electronically commutated motor including reversing; method of operating an ECM including reversing In a motor control circuit for an electronically commutated reversible motor used in a ceiling fan, a control is used to reduce the voltage supplied to the motor for variable speed or torque operation. At the same time, a substantially smooth control volt... | 01/15/1985 |
| 4471268 | Lighting unit having power supply with improved switching means An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The lighting unit utilizes a metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source.... | 09/11/1984 |
| 4464607 | Lighting unit An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The light unit utilizes a metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source. Th... | 08/07/1984 |
| 4453094 | Threshold amplifier for IC fabrication using CMOS technology The present invention relates to a threshold amplifier suited to integrated circuit fabrication of a process employing CMOS technology. The threshold amplifier is designed to sense current producing a first or a second logic level as a function of a curre... | 06/05/1984 |
| 4392081 | Lighting unit A lighting unit is described utilizing an energy efficient metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source producing light when the arc lamp is being started. The lighting unit is designed as a more effi... | 07/05/1983 |
| 4388536 | Pulse generator for IC fabrication The present invention relates to a pulse generator for use at a selected frequency near 100 Khz and having a predetermined duty cycle (typically 20%). The pulse generator is designed for integrated circuit fabrication using a CMOS process. The design util... | 06/14/1983 |
| 4350930 | Lighting unit A lighting unit is described utilizing an energy efficient metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source producing light when the arc lamp is being started, the filament thereof serving as a resistive ... | 09/21/1982 |
| 4307334 | Transformer for use in a static inverter A novel and economical transformer is described for use in a static inverter in association with one or two switching devices, typically transistors. The transformer produces an output for control of the associated switching device(s) which changes in sen... | 12/22/1981 |
| 4282462 | Arc lamp lighting unit with means to prevent prolonged application of starting potentials The present invention relates to a lighting unit utilizing an energy efficient arc lamp as the main source of light supplemented by a standby filamentary lamp, the filament serving as a resistive ballast for the arc lamp during normal operation. The light... | 08/04/1981 |
| 4258338 | Pulse generator producing short duration high current pulses for application to a low impedance load The present invention deals with a pulse generator for generating short duration, high current pulses at a repetition rate which is substantially independent of variations in source potential, load or ambient temperature. The pulse generator employs a sin... | 03/24/1981 |
| 4232252 | Lighting network including a gas discharge lamp and standby lamp A lighting network is described which includes a main gas discharge lamp, a standby lamp and a control circuit. The control circuit senses when the gas discharge lamp is operating normally and turns off the standby lamp. When the discharge lamp is not up ... | 11/04/1980 |
| 4079271 | Alarm driver for a smoke detector An alarm driver is described providing an audio frequency signal for operating the alarm of a smoke detector. The driver comprises a four transistor bridge in which the transistor input bias is momentarily interrupted at an audio rate to permit the bridge... | 03/14/1978 |
| 4031416 | Semiconductor amplification means combining two cascaded transistor amplifiers of high inverse impedances The present invention relates to semiconductor amplification means, which may be fabricated as a monolithic semiconductor structure, for use in an automatic gray scale control circuit for a color television receiver. During the blanking interval, the cont... | 06/21/1977 |
| 4025871 | Audio amplifier for integrated circuit fabrication having controlled idling current An audio amplifier is described designed for integrated circuit fabrication and having controlled idling current. The amplifier includes a pre-amplifier designed to be driven from an AM or FM detector or a high impedance ceramic cartridge. The powder ampl... | 05/24/1977 |
| 4014038 | Automatic gray scale control circuit for a color television receiver The present invention relates to a novel automatic gray scale control circuit for a color television receiver. The circuit senses the cut-off voltage of each gun during the blanking interval, and uses a voltage equal to the cut-off voltage to energize the... | 03/22/1977 |
| 3999138 | Detector for AM-FM signals A detector for AM or FM signals is described. The detector employs a differentially connected emitter follower pair to which an in-phase and a phase-shifted signal are respectively applied. The emitter follower pair produces an output waveform with contro... | 12/21/1976 |
| 3936599 | Automatic gain control system An automatic gain control system applicable to a television receiver is described. Synchronizing pulses contained in the video detector output are sensed to obtain a measure of the signal strength. This is done by applying the detected output, containing ... | 02/03/1976 |
| 3936750 | AM-FM receiver having improved bias supply circuit The present invention relates to an AM-FM receiver of the superheterodyne variety having a novel bias supply circuit wherein a common filter capacitor may be used for the bias supply, the AGC function in AM operation, and the AFC function in FM operation.... | 02/03/1976 |
