42results about How to "Long throw distance" patented technology

A group timing delay device shifts the timing of drop formation waveforms supplied to drop formation devices of one of first and second nozzle groups so that print drops from the nozzle groups are not aligned relative to each other along a nozzle array direction. A charging device includes a common charge electrode associated with liquid jets from the nozzle groups and a source of varying electrical potential between the charge electrode and liquid jets which provides a charging waveform that is independent of a print and non-print drop pattern. The charging device is synchronized with the drop formation devices and the group timing delay device to produce a print drop charge state on print drops of a drop pair, a first non-print drop charge state on non-print drops of the drop pair, and a second non-print drop charge state on third drops.

A group timing delay device is provided to shift the timing of drop formation waveforms supplied to drop formation devices of nozzles of one of first and second groups so that print drops formed from nozzles of the first and second groups are not aligned relative to each other along a nozzle array direction. A charging device includes a common charge electrode associated with liquid jets formed from the nozzles of the first and second group and a source of varying electrical potential between the charge electrode and liquid jets. The source of varying electrical potential provides a charging waveform that is independent of print and non-print drop patterns. The charging device is synchronized with the drop formation device and the group timing delay device to produce a print drop charge state on print drops and a non-print drop charge state on non-print drops.

Drop formation devices are provided with a sequence of drop formation waveforms to modulate the liquid jets to selectively cause portions of the liquid jets to break off into print drops having a print drop volume Vp and non-print drops having a non-print drop volume Vnp. The print and non-print drop volumes are distinct from each other. A timing delay device shifts the timing of drop formation waveforms supplied to drop formation devices of first and second nozzle groups so that print drops from the first and second nozzle groups are not aligned relative to each other. A charging device includes a charge electrode that is positioned in the vicinity of break off of liquid jets to produce a print drop charge state on drops of volume Vp and to produce a non-print drop charge state on drops of volume Vnp.

The invention discloses a projection type LED automobile high beam. The high beam is characterized in that: the high beam comprises four high-power LEDs, each of which is made of a single chip; the high beam is provided with four reflection planes, each LED corresponds to a different reflection plane, the direction of the central emergent light emitted by each LED is perpendicular to the corresponding reflection plane, the first reflection plane and the second reflection plane are symmetric based on the datum axis of the high beam, both the first reflection plane and the second reflection plane make the angle Delta of 75 to 86 degrees with the datum axis of the high beam, the third reflection plane and the fourth reflection plane are symmetric based on the datum axis of the high beam, and both the third reflection plane and the fourth reflection plane make the angle Beta of 77 to 87 degrees with the datum axis of the high beam. Since the light of the high beam is concentrated, the projection angle is small, and the distance is long. The high beam can replace conventional automobile high beams.

The invention discloses a rapid tracking system of a mobile following spotlight for a stage. The rapid tracking system comprises a base, a control panel, supports, a first stand column and a second stand column, wherein the centers of the front and rear end faces of the base are provided with the supports respectively, the right end of a front panel of the base is provided with the control panel,the left end of each support is provided with an adjusting support, the right end of each support is provided with an adjusting spring, the bottom ends of the supports are provided with the first stand column, the bottom end of the first stand column is provided with the second stand column, and the bottom end of the second stand column is provided with a balance weight fixing seat. According to the rapid tracking system, rollers and the stand columns are adopted to realize the movement and supporting installation of the following spotlight, and the following spotlight can be more rapidly andconveniently used for conducting light following operation on the stage; and a control circuit and modules thereof are reasonably arranged in the base, so the bulb projection distance is long, the tone of transmitted light of the following spotlight can be changed, the following spotlight and internal components can be better protected on the premise of guaranteeing the light following effect of the following spotlight, the light following sensitivity is improved, and the stage atmosphere is conditioned.

The invention belongs to the technical field of fire extinguishing equipment, and relates to a fire extinguishing device. The invention comprises a car body, on which a box body and an installation box are arranged, and a partition is arranged in the box body, and the partition plate divides the box body into a water storage cavity and a sand storage cavity, and a feeding hopper is arranged on the box body; the installation box There is a driving shaft inside, and several supporting arms are arranged on the driving shaft, arc-shaped plates are arranged on the supporting arms, a strip-shaped through hole is opened on the installation box, and a driving mechanism that can drive the driving shaft to rotate intermittently is installed inside the installation box; There are two installation pipes on the inner wall of the installation box. There are brackets and hemispherical plates inside the installation tubes. There are drainage holes on the hemispherical plates. The brackets are equipped with drainage mechanisms that can absorb and drain water. There are two cylinders on the installation box. There is a sand discharge mechanism on the partition; the driving mechanism drives the arc plate to rotate between the two installation pipes, and the sand discharge mechanism can send the fire-fighting sand in the sand storage chamber to the arc plate. The invention has the advantages of projecting the fire-fighting sand at a long distance and making the fire-fighting sand cover the fire point in time, thereby improving the fire-extinguishing efficiency.