Abstract: A buoy type wave energy extraction construction in which the natural frequency of vertical oscillation of the buoy is mechanically altered to at least partially conform to the wave frequency occurring during a period of operation, whereby the maximum amount of energy available from each successive wave front is extracted. The device includes a buoy, a vertically oscillating shaft supporting said buoy, a horizontally oriented motion output means driven by said vertical shaft, a braking means for arresting movement of the buoy at its uppermost limit of travel during any given oscillation, said braking means holding the buoy until the buoy may be dropped under gravity into a following wave trough.

Abstract: In a preferred embodiment of the invention, a series of off-set rows of spaced-apart upwardly and downwardly reciprocatable floats are mountedly positioned with predetermined distances and positions relative to one-another such that radially-outwardly traveling turbulances resulting from upward and downward reciprocation of the floats coincide with one-another and with current and/or wave water forces to result in amplified strokes of reciprocation of the floats, and the process of subjecting the floats to such forces, and pooling the energy of a plurality of such floats into a common driving force.

Abstract: In a preferred embodiment of the invention, a plurality of spherical float elements mounted on levers which levers are each mounted for reciprocation along elongated axes thereof substantially vertically thereof to the sea bottom, with interconnected drive shafts for mutually contributing to a common drive, the plurality are arranged with forward and rearwardly and laterally off-set-spaced floats relative to one another and relative to a direction of wave movement from forwardly to rearwardly, such that energy in the form of water pressure waves above and below the water surface are deflected laterally and rearwardly from the forward float elements to the rearward elements to impel against the rearward elements together with the impelling of the normal waves or residual waves also impelling against each of forward and rearward waves, and the process of arranging the plurality of spherical float elements and of harnessing the deflected energy thereby.

Abstract: In a preferred embodiment, a clamping structure is mounted around a drilling-bit tube and is structured for permitting the clamping structure to rotate in counter-clockwise direction slidably around the drilling-bit tube and to permit the clamping structure to slide upwardly on the drilling-bit tube but to bring about a clamping and gripping of the drilling-bit tube whenever the clamping structure has clock-wise and/or downward force imparted thereto relative to a stationary state of the drilling-bit tube such that clockwise and/or downward force on the clamping structure serves to rotate the drilling tube in a clockwise direction and/or to press and move downwardly the drilling-bit tube, and intimate with the clamping structure there being an outer-cylindrical-surface structure having helical female grooves extending angularly downwardly in each of clockwise and counter-clockwise directions, and there being a circumscribing cylindrical tubular structure having radially-inwardly extending finger-projections s