Ascent rate indicator

Details Ascent rate indicator Ascent rate indicator

1992-06-29

1994-05-03

Sotelo, Jesus D.

Buoys, rafts, and aquatic devices

Water rescue or life protecting apparatus

Personal flotation device

441136, 738651, 405186, G01F 2314

Patent

active

053082729

ABSTRACT:
A non-mechanical ascent rate indicator for use in saltwater scuba diving. A high density sphere attached by means of a ball chain tether to the gauge, or hose, of a scuba diver has a free rate of ascent of less than 60 feet/minute, the difference in this rate and that of the diver will be shown by the amount to free loop in the tether as it is observed on a horizontal plane even to the diver's eyes. A safe ascent rate will provide a loop of approximately 1 to 11/2 inch.

REFERENCES:
patent: 3696610 (1972-10-01), Charbonnier
patent: 4327584 (1982-05-01), Alinari
patent: 4350042 (1982-08-01), MacGregor
patent: 4583484 (1986-04-01), Freund
patent: 4589283 (1986-05-01), Morrison
patent: 4810134 (1989-03-01), Eaulconer et al.
patent: 4889511 (1989-12-01), Herman

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