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 Title: |
US4951660:
Diver's rescue apparatus
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Lubitzsch, Wolfgang; Stockelsdorf, Germany
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| Assignee: |
Dragerwerk AG, Lubeck, Germany
other patents from DRAGERWERK AKTIENGESELLSCHAFT (154005) (approx. 595)
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| Published / Filed: |
1990-08-28
/ 1988-03-02
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| Application Number: |
US1988000166732
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| IPC Code: |
Advanced:
B63C 11/02;
B63G 8/40;
Core:
B63G 8/00;
more...
IPC-7:
B63C 11/02;
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| U.S. Class: |
Current:
128/201.27;
128/201.28;
128/202.14;
Original:
128/201.27;
128/201.28;
128/202.14;
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| Field of Search: |
128/201.27,201.28,202.14,200.29,201.29
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| Priority Number: |
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| Abstract: |
A diver's rescue apparatus includes a fillable buoyancy element and a breathing bag into which respiratory gas mixture is metered from a compressed gas source is to be expanded to a range of use for greater diving depths, for example up to 150 to 200 m. It is to be possible to carry out the then necessary supply of the apparatus wearer with physiologically adapted respiratory gas mixtures varying during the ascent by simple means in order to minimize the space requirement and weight of the apparatus as well as its trouble proneness and cost of maintenance. A first compressed gas tank containing a gas mixture for great depths to the breathing bag via a fixed throttle 7, while a second compressed gas tank containing a gas mixture for small depths is so connected via a separate pressure reducer and a downstream second fixed throttle.
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| Attorney, Agent or Firm: |
McGlew & Tuttle ;
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| Primary / Asst. Examiners: |
Hindenburg, Max; Lacyk, J. P.
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Parent Case: |
This application is a continuation of application Ser. No. 924,356, filed Oct. 28, 1986, now abandoned.
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| Designated Country: |
DE FR GB IT SE
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| Family: |
Show 14 known family members
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First Claim:
Show all 9 claims |
What is claimed is:
1. A diver's rescue apparatus comprising a fillable buoyancy element, a breathing bag exposed to ambient pressure attached to said fillable buoyancy element, a respiratory gas mixture system connected to said breathing bag including a first compressed gas tank containing a gas mixture for great depths and second compressed gas tank containing a gas mixture suitable for lesser depths, a first connecting line from said first compressed gas tank to said breathing bag having a first fixed throttle, a second connecting line from said second compressed gas tank to said breathing bag, the second connecting line having a pressure reducer reducing the pressure of the gas mixture supplied to the breathing bag from the second tank to below the pressure of the gas mixture supplied to the breathing bag from the first tank, and, a second fixed throttle in the second connecting line whereby, throughout operation of the rescue apparatus, ignoring any depletion of the gas supply, the difference between the pressures of the gas mixtures supplied from the first and second tanks is constant so that the quantities of gas mixture flowing from respective tanks into the breathing bag are determined substantially entirely by the ambient pressure to which the breathing bag is exposed.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
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