Ships – Submersible device – Diver assistance device
Patent
1992-02-24
1992-10-27
Sotelo, Jesus D.
Ships
Submersible device
Diver assistance device
440 6, B63C 1146
Patent
active
051580349
ABSTRACT:
An automatic swimming board for a beginner to lie on for learning swimming or diving, has a transmitting unit to move forward the board by means of a motor powered by an electric power source for rotating fans, and a water pressure sensor and a pressure signal lamp to give a warning to the user about the depth limit when the board is used to dive in the water.
REFERENCES:
patent: 3442240 (1969-05-01), Wild et al.
patent: 3548771 (1970-12-01), Hastings
patent: 3618551 (1971-11-01), Desliewes
patent: 3650234 (1972-03-01), Goudy
Klein David I.
Rosenberg Morton J.
Sotelo Jesus D.
Tontech International Co., Ltd.
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