Breathing apparatus with chamber of variable capacity for scuba diving
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 6, 1993
Grant Date -
N/A
app pub date -
May 22, 1991
filing date -
Jun 7, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A movable partition of a chamber of variable capacity consists of a diaphragm of elastomeric material which has been preshaped to provide a main part and a control part of reduced area, which is outwardly offset with respect to the main part and arranged for cooperating with a pressure reducer which selectively feeds a treating gas into the variable capacity chamber.
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