A compact spraying device (10) connectable to a surface and for spraying a fluid comprises a housing (16) with an inlet (20), a pump (28) in fluid communication with the inlet (20), a retractable nozzle (24) in fluid communication with the pump (28), a nozzle cover (22) and a drive system (30). The retractable nozzle (24) selectively extends forward relative to a front side of the housing (16) into a spraying position for spraying the fluid and retracts inside the housing to a retracted position when not spraying. The nozzle cover (22) is selectively moveable from a closed position in which the cover (22) covers the nozzle (24) when the nozzle (24) is in a retracted position, to an open position in which the cover (22) moves to allow the nozzle (24) to extend into the spraying position. The drive system (30) moves the retractable nozzle (24) and the nozzle cover (22) and operates the pump (28).

In one aspect, a fire suppression sprinkler assembly (10) is provided. The assembly includes a housing (20), and a sprinkler body (22) disposed at least partially within the housing and configured to supply a fluid to an area. The sprinkler body is movable between a first position where the sprinkler body is concealed within the housing and a second position where the sprinkler body extends from the housing to supply the fluid to the area heat responsive element (28) operatively associated with the sprinkler body and configured to facilitate preventing deployment of the sprinkler body from the first position to the second position until the heat responsive element senses a predetermined temperature.

A three-dimensional printer includes: a machine mainframe, formed with a carrying plane; a three-dimensional printing module, installed on the machine mainframe, and used for forming a three-dimensional object on the carrying plane according to a three-dimensional model data; and a color spraying nozzle module, installed on the machine mainframe and used for coloring a surface of the three-dimensional object according to the three-dimensional model data, wherein the color spraying nozzle module includes at least one color spraying nozzle and at least one screen member, the color spraying nozzle is formed with at least one nozzle hole, the screen member is formed with at least one screen hole, the screen hole is arranged corresponding to the nozzle hole, and the area of the screen hole is smaller than the area of the nozzle hole thereby enabling the color spraying nozzle module to more efficiently color the three-dimensional object.

An apparatus for depositing and/or jetting viscous medium on a surface of a workpiece includes at least two depositing head assemblies. The at least two depositing head assemblies are configured to move in three dimensional space. The at least two depositing head assemblies are also configured to at least one of concurrently and simultaneously deposit the viscous medium on the workpiece.

A sprinkler head of visual identification is disclosed. A housing includes a circumference wall, a cap enclosing the circumference wall, and an aperture member alternatively formed on the cap and the circumference wall for dispensing water. A first visual portion is arranged on the circumference wall of the housing and corresponds with the aperture member. A second visual portion, which is visually different from the first visual portion, is arranged on the circumference wall and adjoins the first visual portion. The first and second visual portions constitute the circumference wall of the housing together, a visual differentiation of the first recognition portion and the second one is offered in accordance with the arrangement of dissimilar art elements.

A rotating distributor for use in a rotary type sprinkler is conically shaped and includes a plurality of water channels provided on a bottom surface thereof to guide water from a center axis of the distributor radially outward to an outer circumference of the distributor. The grooves are provided to collect and guide the water with a minimum of spray and turbulence and to impart rotation on the distributor. The depth of the grooves may be used to control flow and range as desired. An elevation control ring may be provided to vary the elevation angle of water leaving the grooves to control range. A kick angle control element may be provided to modify a kick angle at an outer circumferential end of selected grooves to provide speed control, if desired.

Embodiments disclosed herein provide systems and methods for an in-ground sprinkler to controller a liquid flow rate through a chamber, while reducing or eliminating leakage. Embodiments may utilize a flat, external surface that is configured to be flush with a ground surface to control the liquid flow rate through the in-ground sprinkler. In embodiments, a permanent magnet may be positioned on the flat, external surface to control an internal patch system. Responsive to the permanent magnet controlling the internal patch, liquid flowing through the chamber may be controlled.

The present invention includes an improved sprinkler design having a magnetic sensing system for determining the position of the riser nozzle, a waterproofed motor housing and related cables, configurable sprinkler body compartments, and a pilot valve with a check valve assembly, both of which are located within the sprinkler body.

The present invention introduces an operational end module for material spraying or working tool applications. The end module may be fixed in an arm. The end module senses its current location and alignment, together with its nearest distance to an obstacle. The system corrects the direction and location of the end module based on the sensed data and the used application. The device has a user input interface and a screen for parameter representation. The end module direction and location can be controlled by three mutually orthogonally aligned motors connected along the material pipe, where the pipe curves between the motors, together with a variable length arm. A machined screwdriver operation in difficult locations is an example of the invention in the area of working tools.

In some embodiments, a sprinkler head is disclosed. The sprinkler head can include a spray stem comprising an upper stem rotatably coupled to a base stem; a spray nozzle coupled to a distal end of the upper stem; and a connector for removably coupling the sprinkler head to a pressurized liquid source. An interior cavity of the base stem can be in fluid communication with an interior cavity of the connector, and the upper stem can rotate between an operational position where an upper stem interior cavity is in fluid communication with the base stem interior cavity and a maintenance position where the upper stem interior cavity is not in fluid communication with the base stem interior cavity. A pop-up sprinkler head including the spray stem described herein is also described.