Rotatable ice-formation-preventing device

A rotatable ice-formation-preventing device which is positionable just below the surface of a body of water exposed to cold air thereabove and which can continuously accommodate variations in the surface level of the water, said device comprising an upper member, an intermediate member and a lower member,

• said upper member including an elongated lower portion, an enlarged head portion, and an elongated interior member;
• said elongated lower portion being hollowed out so as to have a tubular configuration with an internal flow passageway therein as well as including slide connection means for axially slidable interconnection with said intermediate member;
• said enlarged head portion being partially hollowed out so as to have an internal flow area therein in communication with said internal flow passage, said enlarged head portion also including an annular cap member and at least two equally angularly spaced apart radially-extending channels in the outer peripheral portion thereof, said channels allowing for fluid communication between said interior flow area and the exterior of said enlarged head portion, and buoyancy-creating means;
• and said elongated interior member being connected to the inner rim of said annular cap member and extending centrally through said enlarged head portion and said elongated lower portion,
• said intermediate member being in the form of an elongated hollow cylinder which is axially and telescopically slidable with respect to said elongated lower portion of said upper member, said intermediate member including first slide connection means for interengagement with said slide connection means for interengagement with said slide connection means on said elongated lower portion to provide for axial sliding interconnection therebetween, as well as second slide connection means for interconnection with said lower member, and
• said lower member being in the form of an elongated hollow cylinder which is axially and telescopically slidable with respect to said intermediate member, said lower member including slide connection means for interengagement with said second slide connection means on said intermediate member to provide for axial sliding interconnection therebetween,
• said device when submerged below the surface of a body of water and rotated by a rotatable drive shaft extending downwardly through said elongated interior member of said upper member and centrally through said intermediate member and said lower member, acting to centrifugally eject water from said interior flow area of the enlarged head portion of the upper member and concurrently suck water upwardly through the interiors of said lower member, said intermediate member and said elongated lower portion of said upper member to thereby create a continuous flow of warm subsurface water to mix with the colder water at the water's surface, while the telescopic arrangements of said intermediate member with the elongated lower portion of said upper member and said lower member with said intermediate member allow the buoyancy-creating means in said enlarged head portion of said upper member to continuously retain said upper member at or near the water's surface regardless of variations therein.

A rotatable ice-formation-preventing device which is positionable just below the surface of a body of water exposed to cold air thereabove and which can continuously accommodate variations in the surface level of the water, said device comprising:

• an upper member including an elongated lower portion, an enlarged head portion, and an elongated interior member;
• said elongated lower portion being hollowed out so as to have a tubular configuration with an internal flow passage therein;
• said enlarged head portion being partially hollowed out so as to have an internal flow area therein in communication with said internal flow passage, said enlarged head portion also including an annular cap member and at least two equally angularly spaced apart radially-extending channels in the outer peripheral portion thereof, said channels allowing for fluid communication between said interior flow area and the exterior of said enlarged head portion, and buoyancy-creating means;
• and said elongated interior member being connected to the inner rim of said annular cap member and extending centrally through said enlarged head portion and said elongated lower portion, said interior member having a generally square cross section;
• said device when submerged below the surface of a body of water and rotated by a rotatable drive shaft having a generally square cross section of slightly smaller dimensions from the inside dimensions of said elongated interior member and axially slidingly extending through said elongated interior member acting to centrifugally eject water from said interior flow area of the enlarged head portion and concurrently suck water upwardly through the interior flow passage of the elongated lower portion to thereby create a continuous flow of warm subsurface water to mix with the colder water at the water's surface, and the device sliding along the rotatable drive shaft to accommodate water surface level variations.