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freepatentsonline.com: Fluid sprinkling, spraying, and diffusing


Injection nozzle
An injection nozzle for use in delivering fuel to a combustion space, the injection nozzle comprising a nozzle body, at least a part of which is provided with a first coating arranged so as to reduce the temperature of at least a part of the nozzle body, in use. The coating may have either a higher or lower thermal conductivity than the thermal conductivity of the nozzle body.

Shower head
A shower head includes a main body formed with a chamber communicating with a water inlet at the upper end. The main body has its lower end formed with central water outlets and peripheral water outlets and has its interior installed with a water-separating unit with a pivot having a sealing member fixed thereon. When the pivot together with the sealing member is moved up and down vertically in the chamber, the sealing member can carry out sealing to control the water flowing in the chamber through the central water outlets or the peripheral water outlets. The main body has one circumferential side installed with a press unit formed with two pushing slopes actuated to move horizontally and push the pivot of the water-separating unit to shift up and down vertically for controlling the shower head to send out water through the center or the periphery.

Fuel injection valve for internal combustion engines
A fuel injection valve for internal combustion engines, having a valve body ( 1 ) in which a bore ( 3 ) is embodied that is defined on its end toward the combustion chamber by a valve seat ( 18 ) at which at least one injection opening ( 20 ) originates. The hollow valve needle ( 8 ) is located longitudinally displaceably in the bore ( 3 ) and has a valve sealing face ( 35 ) on its end oriented toward the valve seat ( 18 ). A first sealing region ( 31; 34 ) and a second sealing region ( 32; 46; 48 ) are embodied on the valve sealing face ( 35 ), and upon contact of the hollow valve needle ( 8 ) with the valve seat ( 18 ), the first sealing region ( 31; 34 ) upstream of the at least one injection opening ( 20 ) and the second sealing region ( 32; 46; 48 ) downstream of that injection opening effect sealing between the valve sealing face ( 35 ) and the valve seat ( 18 ) (FIG. 1 ).

Fire protection sprinkler system for metal buildings
A fire protection sprinkler system for metal buildings has horizontally oriented sprinkler heads mounted on water supply lines extending along each side of rafters supporting the roof of a metal building so as to provide protection for bays between adjacent rafters having a width up to 25 feet or more. The sprinkler heads have a vertical part facing an outlet in a sprinkler body and a hood-shaped part supported from the vertical part and having downwardly inclined side walls and a downwardly inclined front wall. The deflector arrangement is supported from the sprinkler body by a pair of frame arms which converge at a boss on which the vertical part is mounted and another deflector part having rearwardly inclined arms extending horizontally, downwardly at an angle and substantially vertically, is supported between the boss and the vertical part of the deflector.

Cylindrical pushrod for needle-retracting safety injector and the needle-retraction controllable safety injector
The invention provide a cylindrical pushrod for the syringe needle-retracting safety injector, comprising an outer cylinder, an inner cylinder, a push pole, an underpinned piece and a seal gasket; the push pole is set at the front end of chamber of outer cylinder, its front end appears as a tubular shape or projects partially in the longitudinal direction, the back end of push pole is supported on the underpinned piece; the underpinned piece is set at the front end of the chamber of outer cylinder and supports the push pole; the cylinder wall of the inner cylinder supports the underpinned piece; a clamping structure is set at the tail of this cylindrical pushrod. With the safety injector with the cylindrical pushrod according to the invention, the medical personnel can control the time of the needle retraction as desired, and is not necessary to change their habitual injection practice, and thereby the safety injector is easy to operate. The invention also provide a safety injector, which can not only carry out the controllable retraction of the needle but also has a simple and crafty fixed structure of the needle stand to achieve the effect of reliable fixation as well as releasing with ease.

Solenoid valve
The invention relates to a solenoid valve made using certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The plunger ( 1 ) is made from an electromagnetic material having a saturation flux density greater than 1.2 Tesla preferably more than 1.6 Tesla, the bore leading from the valve head chamber ( 14 ) to the nozzle orifice ( 12 ) has a length to diameter ratio of less than 5:1 preferably between 2:1 and 4:1 and the nozzle orifice ( 12 ) has a diameter of 80 micrometer or less. The invention also relates to method for operating a drop on demand ink jet printer incorporating such a valve.

Compressed air/gas-driven tool with integrated dryness indicator
An air/gas-driven tool with an integrated air/gas dryness indicator. The tool includes a housing that defines a cavity. An air/gas dryness detector is disposed in the cavity. An air/gas flow passage is situated to provide a stream of compressed air/gas to the dryness detector. A visual indicator is adapted to provide an indication of compressed air/gas dryness detected by the dryness detector. The tool can be constructed so that the air/gas dryness indicator is provided by way of a removable indicator cartridge containing a dryness-indicating material such as a color changing desiccant or moisture sensitive paper. The indicator cartridge can be sized and configured to be received in a cavity formed in a housing of the air/gas-driven tool, so as to be viewable through a view port formed in the tool. Alternatively, the indicator cartridge can be configured with its own view port and mounted on a surface of the tool while being partially received in the cavity. The air/gas dryness indicator can also be provided with an electromechanical dryness detector and a numeric display that displays relative humidity, dew point temperature, or both.

Thermal projection device
The invention relates to a device and a method for control of the operation of a thermal projection torch ( 12 ), characterized in that the characteristics of the jet ( 16 ) and the temperature of the deposit ( 24 ) on the piece ( 22 ) are measured by means of a camera ( 54 ) and a combined pyrometer ( 70 ). The correction to be made to the supply parameters of the torch ( 12 ) are deduced therefrom and the corrected parameters are transmitted to the unit ( 30 ) controlling the torch ( 12 ).

Multi-chemical dispensing system
An apparatus for selective eductive dispensing of multiple chemical fluids from separate fluid containers includes a motive fluid inlet; an eductor in fluid communication with said motive fluid inlet; a selector switch defining at least one inlet and an outlet therein, said inlet and outlet in fluid communication with one another and said outlet in fluid communication with said eductor and wherein said selector switch inlet is in selective fluid communication with said fluid containers depending on the position of the selector switch; and a valve located between said motive fluid inlet and said eductor, said valve selectively opened and closed by movement of said selector switch.