| 摘要 |
<p>A spraying device comprising a housing (12) containing a top and bottom portion defining a chamber therein for fluid ingress and egress into the bottom portion wherein the housing (12) includes an outer structure (18) containing an inner structure (16), and a tensioning device (22) which releasably positions the outer structure (18) at the housing bottom. The inner structure (16) is engaged to an arm member (20) for spraying said fluid, such that the inner structure (16) causes the arm member (20) to move in a linear and rotating relationship relative to the housing (12). The outer structure (18) engages the inner structure (16) to move in linear and rotating relationship relative to the housing (12). The ingress of fluid in the chamber causes the inner (16) and outer (18) structures to move linearly and at a predetermined point the inner structure (16) is prevented from moving in the linear direction while the outer structure (18) continues to move linearly, thereby causing said inner structure (16) to rotate.</p> |
