Vacuum cleaner for submerged non-parallel surfaces

In a vacuum cleaner of the type used on submerged surfaces and having a cleaning head and means for connecting said cleaning head to a source of vacuum so that fluid surrounding said cleaning head can be withdrawn through said cleaning head, the improvement comprising:

• (a) said cleaning head comprising
• a first part;
• a first chamber in the first part;
• a second part hingedly connected to the first part;
• a second chamber in the second part;
• a third part hingedly connected to the first part;
• a third chamber in the third part;
• and
• a first flexible conduit connected, at one end, to the first part and connected, at another end, to the second part;
• the first chamber communicating with the second chamber through the first flexible conduit;
• a second flexible conduit connected, at one end, to the first part and connected, at another end, to the third part;
• the first chamber communicating with the third chamber through the second flexible conduit;
• a third flexible conduit connected, at one end, to the first part and connected, at another end, to a vacuum source;
• the vacuum source communicating with the first chamber through the third flexible conduit;
• the second chamber tapering upward from a shorter distal end to a higher proximate end near the first flexible conduit;
• and
• the third chamber tapering upward from a shorter distal end to a higher proximate end near the second flexible conduit;
• (b) a plurality of multi-directional rotational castor-type wheels on the cleaning head;
• (c) a manipulating member releasably attached to the cleaning head;
• and
• (d) a plurality of non-flotation weights on the cleaning head.