摘要:
Devices for cleaning vessels, especially swimming pools, are discussed. The devices may include repositionable in-line valves (54), with the valves typically moving laterally (from side to side) and changing the initial direction of the main fluid-flow path through the valves and corresponding cleaner bodies. Asymmetric feet may be utilized as part of the devices, whose bottom bearing surfaces may include elongated strips of material placed parallel to the normally- forward direction of travel of the devices. Discs of non-uniform flexibility also may be employed, and blocking tabs or gripping material may be used to inhibit undesired backward movement of a cleaner when its operation commences.
摘要:
A pressure type pool cleaner includes a head (10) propelled forwardly (34) over a surface (12). Different portions of water pumped (14, 16) to the head inducts debris into a cleaner system, and is ejected via a thrust nozzle (42) onto a deflector (68) and thence along a thrust line (80) to thrust the head along the line (80). The deflector (68) is pivotal via a saddle (48) about a longitudinal axis such as to be displaced laterally relative to the thrust nozzle (42). The deflector includes obliquely opposed deflection surfaces which are respectively aligned with the nozzle in dependence on its relatively laterally displaced position to deflect the water ejected along the line (80) to respectively different oblique directions to adjust the direction of thrust and to effect lateral steering.
摘要:
A pressure type pool cleaner includes a head (10) propelled forwardly (34) over a surface (12). Water pumped (14, 16) to the head drives wheels (22) turbine fashion; inducts debris into a cleaner system; and is ejected via a thrust nozzle (42) onto a guide (68) and thence along a thrust line (80) to thrust the head along the line (80). A pivoted director (44) mounts the guide (68) and includes a surface member (56) exposed to the water. During forward movement, water pressure on the member (56) counteracts jet stream pressure on the guide and maintains the guide's orientation for the thrust line (80) to pass closely above a wheel rotation axis (24). When an obstacle stops forward motion, pressure on the member (56) and its counteracting stop, the guide (68) is reoriented and redirects the thrust to well below the axis (24) to pivot the head (10) about the axis to assist the wheels (22) to scale the obstacle.
摘要:
Discs having recessed areas, or pockets, in their undersides are detailed. The pockets allow provision of increased suction in localized regions, especially useful when the body of an associated cleaner pivots from side to side. Downwardly-extending wear surfaces may be present as well within the pockets.
摘要:
A pressure type pool cleaner includes a head (10) propelled forwardly (34) over a surface (12). Different portions of water pumped (14, 16) to the head inducts debris into a cleaner system, and is ejected via a thrust nozzle (42) onto a deflector (68) and thence along a thrust line (80) to thrust the head along the line (80). The deflector (68) is pivotal via a saddle (48) about a longitudinal axis such as to be displaced laterally relative to the thrust nozzle (42). The deflector includes obliquely opposed deflection surfaces which are respectively aligned with the nozzle in dependence on its relatively laterally displaced position to deflect the water ejected along the line (80) to respectively different oblique directions to adjust the direction of thrust and to effect lateral steering.