Remotely activated sprayers are known. For example, U.S. Pat. Nos. 4,432,472, 5,368,202, 6,976,644 and 7,040,510 disclose mounting spray devices on one end of a shaft and remotely activating the spray device from the other end of the shaft. The U.S. Pat. No. 4,432,472 discloses a buffer at the distal end of the shaft, along with a chain connected thereto that extends to the proximate end of the shaft for operating the spray device remotely. The U.S. Pat. Nos. 5,368,202, 6,976,644 and 7,040,510 disclose a trigger lever at the proximal end (i.e. user's handle end) of the shaft, which when activated (moved) by the user causes the spray device at the other end of the pole to emit a liquid spray. The use of such trigger levers to remotely trigger a spray device at the other end of the shaft which also contains a cleaning device such as a broom or mop is also known (i.e. spray mop).
One issue with conventional spray mops is the user's need to control the pattern of spray emitted by the spray device each time the lever is activated. For some applications, the user may wish to use a narrow, focused pattern. For other applications, the user may wish to use a wide, dispersed pattern. For still other applications, the user may wish to use both. Conventional spray devices include a pattern adjustment, but they typically utilize a single nozzle (with adjustments made to that single nozzle), with mixed results in terms of quality of spray pattern, reliability, ease of use, and ease of manufacture.
There is a need for a convenient adjustment mechanism for adjusting the pattern of liquid that is released by the spray device, which is reliable, easy to use, and easy to manufacture.