F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
F03B 17/04 (2006.01)
Patent
CA 2437599
A buoyancy-activated motor (20) includes a plurality of deformable chambers (30) immersed within water (22) that extend generally radially outwardly from a horizontal shaft (24). A structure (28) rollably supports the shaft (24). Each chamber (30) is deformable between expanded and collapsed configurations so as to have a variable buoyancy relative to the water (22). Each chamber (30) has a center of gravity (31) located at first and second generally radial distances (D, D') from the shaft (24) when in the expanded and collapsed configurations, respectively. The first distance (D) is greater than the second distance (D'). The chambers (30) move generally upwardly and downwardly about the shaft (24) when in the expanded and collapsed configurations, respectively, so as to induce rotational movement of the shaft (24). A gas (32), lighter than an equal volume of water (22), is contained within the chambers (30) that are in fluid communication with one another via connecting tubes (34). The chambers (30) are in their expanded and collapsed configurations during respective upward and downward movement thereof.
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