Power plants – Motor having a buoyant working member – Working member actuated by the rise and fall of a surface of...
Patent
1982-07-08
1988-09-27
Ostrager, Allen M.
Power plants
Motor having a buoyant working member
Working member actuated by the rise and fall of a surface of...
60497, 60502, F03B 1312
Patent
active
047732210
ABSTRACT:
Apparatus for recovering kinetic energy bound in the movement of water waves. The apparatus comprises a bouyant unit (2) and an energy-absorbing device connected to the bouyant unit. The energy-absorbing device comprises an immersed rigid piston (6) which is slideably arranged in a substantially vertical, elongate accelerating tube (1) which is intended to be immersed in the water and which is open at both ends thereof. The accelerating tube is connected to the buoyant unit (2) so as to accompany movement of the unit imparted thereto by the wave movement of the water. The working stroke (1) of the piston in the accelerating tube is limited by means of movement-limit means (8,9) incorporated in the accelerating tube and arranged to abrogate the force acting on the piston. In accordance with one suitable embodiment, these movement-limiting means comprise openings (9) arranged in the accelerating tube and co-acting with corresponding openings (8) in the piston (6).
REFERENCES:
patent: 4203294 (1980-05-01), Budal et al.
patent: 4249085 (1981-02-01), Kertzman
Interproject Service AB
Ostrager Allen M.
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