Variable bouyancy amusement device

Details Variable bouyancy amusement device Variable bouyancy amusement device

1996-08-09

1998-03-03

Muir, D. Neal

Amusement devices: toys

Aquatic

A63H 2300

Patent

active

057228710

ABSTRACT:
A variable buoyancy amusement device for use in water includes a body having a water-impermeable outer surface and an internal volume. A relatively heavy lower portion of the body has a local density significantly greater than that of water so that the body tends to assume an upright orientation with the lower portion at the underside of the body. The body also features an internal cavity connected to the surface of the body by an upper aperture and a lower aperture. At least one of the apertures is selectively closeable so that, when the cavity contains air, the body floats on the water with the lower aperture submerged. When the aperture is opened, water enters the cavity through the lower aperture thereby reducing the buoyancy of the body and causing it to sink.

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patent: 479530 (1892-08-01), Roberts
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patent: 3010251 (1961-11-01), Derdowski
patent: 3451159 (1969-06-01), Springfors
patent: 3695607 (1972-10-01), Stouffer
patent: 5256457 (1993-10-01), Pantaleo

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