| 摘要 |
<p>A foam dispensing gun has a body (10) with a depending handle (11). The body has two passageways (12, 13) divided into forward and rearward portions by an intermediate chamber. A hose connector and duck-bill one-way valve (25) are mounted in the rearward portion of each passageway, and a valve member (31) extends through both the forward and rearward portions of each passageway. The valve member has a conical needle valve (35) mating with a conical valve seat (37) that opens directly to the nose of the body (40). A trigger lever (51) is pivotally mounted in the chamber and engages the valve members to open and close the valves. A disposable nozzle (65) with a mixing chamber (66) and outlet (67) is attached about the nose of the body by resilient arms (71) engaging with ears (72) extending from the body.</p> |
