Closed cycle gas mask and breathing equipment for operation under pressure having a severance-operated connection shut-off for the breathing equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 11, 1990
Grant Date -
N/A
app pub date -
May 17, 1989
filing date -
Jul 9, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closed cycle gas mask and breathing equipment for operation under pressure includes a gas connector connectible to a tubular fitting of the mask with an inhalation line and an exhalation line which open into a joint connection to a mask. The connection has a device for preventing the escaping of gas from the mask by closing the connection when the connection is undone from the mask. The wearer can disconnect himself from the cycle or enter it without a considerable loss of gas. For this purpose the connector has a non-return valve which when disconnected blocks the breathing gas supply in the inhalation direction which is mounted in the opening of the connector and which is held open by an actuator or detector provided at the mask tubular fitting when the mask is connected.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully