Hybrid self-rescue equipment
AssigneeDraeger Medical Systems, Inc.
InventorsEric J. Robey, Robert H. Sell, Thomas J. Pitzer, William E. Dedig, Jr.
Life of this patent
Estimating the term…
Abstract
A safety breathing apparatus has a delivery element configured to deliver respirable gas to a respiratory system of a user. The apparatus includes a breathing hose in fluid communication with a first source of respirable gas. A valve housing includes a first port configured to be couple to the delivery element, a second port configured to be coupled to the breaking hose, and a third port configured to dock with a second source of respirable gas without exposing the user to a surrounding atmosphere.
Claims22
A safety breathing apparatus comprising:
- a delivery element configured to deliver respirable gas to a respiratory system of a user;
- a breathing hose in fluid communication with a first source of respirable gas;
- and
- a valve housing comprising:
- a first port configured to be coupled to the delivery element;
- a second port configured to be detachably coupled to the breathing hose, wherein the second port comprises a first valve element biased in a first configuration that prevents gas flow through the second port, wherein in a second configuration the first valve element allows gas flow through the second port upon a coupling connection with the breathing hose, and wherein the first valve element returns to the first configuration upon de-coupling of the breathing hose from the second port;
- and
- a third port configured to detachably dock with a second source of respirable gas, wherein the third port comprises a second valve element biased in a first configuration that prevents gas flow through the third port, wherein in a second configuration the second valve element allows gas flow through the third port upon a coupling connection with the second source of respirable gas, and wherein the second valve element returns to the first configuration upon de-coupling of the second source of respirable gas from the third port,
- wherein a bi-directional flow path through the valve housing is either between the first port and the second port or the first port and the third port.
A valve housing comprising:
- a first port configured to be coupled to a delivery element configured to deliver respirable gas to a respiratory system of a user;
- a second port configured to be detachably coupled to a breathing hose in fluid communication with a first source of respirable gas, wherein the second port comprises a first valve element biased in a first configuration that prevents gas flow through the second port, wherein in a second configuration the first valve element allows gas flow through the second port upon a coupling connection with the breathing hose, and wherein the first valve element returns to the first configuration upon de-coupling of the breathing hose from the second port;
- and
- a third port configured to detachably dock with a second source of respirable gas, wherein the third port comprises a second valve element biased in a first configuration that prevents gas flow through the third port, wherein in a second configuration the second valve element allows gas flow through the third port upon a coupling connection with the second source of respirable gas, and wherein the second valve element returns to the first configuration upon de-coupling of the second source of respirable gas from the third port,
- wherein a bi-directional flow path through the valve housing is either between the first port and the second port or the first port and the third port.
Dependencies are inferred from the claim text.