Air pressure gauge with self contained adjustable alarms

Details Air pressure gauge with self contained adjustable alarms Air pressure gauge with self contained adjustable alarms

1992-12-08

1994-10-18

Powell, Mark R.

Communications: electrical

Condition responsive indicating system

Specific condition

340688, 73732, 73741, G08B 2100

Patent

active

053572424

ABSTRACT:
A diver's air tank pressure gauge having audible and visual alarms, an alarm pointer for indicating the pressure at which the alarms will activate, and a crank assembly for changing the position of the alarm pointer. The pressure gauge dial has a cutout for limiting the travel of the alarm pointer between acceptable high and low pressure limits. When the air tank pressure equals a preset alarm pressure, an electrical circuit is completed which activates the alarms. The diver can then turn off the alarms by resetting the alarm indicator to a lower pressure setting and continue the dive at a shallower depth.

REFERENCES:
patent: 3129416 (1964-04-01), Freedman
patent: 3715927 (1973-02-01), Grant
patent: 4016536 (1977-04-01), La Chapelle
patent: 4536756 (1985-08-01), DePasquale et al.
patent: 4613851 (1986-09-01), Hines
patent: 4636776 (1987-01-01), Leaming
patent: 4800373 (1989-01-01), Mayz
patent: 4906977 (1990-03-01), Huey-Jeng
patent: 5051729 (1991-09-01), Gray
patent: 5121109 (1992-06-01), Murphy, Jr. et al.
patent: 5191317 (1993-03-01), Toth et al.

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