Rate-of-ascent monitoring instrument for divers

Details Rate-of-ascent monitoring instrument for divers Rate-of-ascent monitoring instrument for divers

1975-12-29

1976-11-23

Queisser, Richard C.

Measuring and testing

Miscellaneous

58145R, 58152R, G04B 4706, G01F 2314

Patent

active

039929493

ABSTRACT:
A rate-of-ascent instrument for underwater use by divers has a transparent depth gauge through which a dial of an associated timepiece is visible. The depth gauge has a generally labyrinthine capillary channel spiraling counterclockwise inwardly from the open end thereof and overlying the dial of the timepiece. As the instrument moves upwardly from a submerged position, the rate of upward movement is monitored by comparing the clockwise movement of the meniscus of the contained water column with the moving second hand of the timepiece.

REFERENCES:
patent: 3111003 (1963-11-01), Droz
patent: 3188864 (1965-06-01), Dean
patent: 3214577 (1965-10-01), Protzmann
patent: 3759101 (1973-09-01), Borom et al.
patent: 3910117 (1975-10-01), Wicklund

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