US4011867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diver's pressure chamber system
Assignee: Draegerwerk AG and Co KGaA
•
Filing: 1975-09-30
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Granted: 1977-03-15
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Expires: 1995-09-30
Abstract
Abstract A diver's pressure chamber system for use with a pressure chamber having a sealable access and a sealed transfer container for the diver, comprises a tubular projection which is formed around the access of the pressure chamber. In addition, a cylindrical lock space part is hermetically engageable and sealable with the tubular projection and defines, along with the tubular projection, the access, a lock space between the transfer container and the pressure chamber. In one form, the cylindrical lock space part is of substantially the same length as the transfer container and it is held to the projection formed around the access of the main pressure chamber, for example, by a rotatable bayonet-type sleeve catch. In another form, the main pressure chamber includes a lock space which is formed as a part of the projection extending outwardly from the pressure chamber and this lock space portion in turn includes a second projection forming a collar for a cylindrical lock space part which is engageable and hermetically sealable thereto.
Inventors
- 👤 Arne-Johann Arntzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/32; B63C11/325
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A diver's pressure chamber system for use with a fixed pressure chamber having a sealable access and using a transportable sealed diver's transfer container for the diver, comprising, a tubular projection formed around the access, a separate portable cylindrical lock space part hermetically engageable and sealable with said tubular projection and defining with said tubular projection and said access a pressurizable lock space which may be brought to a desired transfer pressure, and a sealed diver's transfer container positionable in said lock space having a removable sealing cover which may be removed when the lock space is brought to a pressure comparable to the transfer container and to the pressure chamber.
Claim 2
Dependent Claim
111 words
A diver's pressure chamber system for use with a fixed pressure chamber having a sealable access and using a transportable sealed diver's transfer container for the diver, comprising, a tubular projection formed around the access, a separate portable cylindrical lock space part hermetically engageable and sealable with said tubular projection and defining with said tubular projection and said access a pressurizable lock space which may be brought to a desired transfer pressure, and a sealed diver's transfer container positionable in said lock space having a removable sealing cover which may be removed when the lock space is brought to a pressure comparable to the transfer container and to the pressure chamber.
Claim 3
Dependent Claim
18 words
A diver's pressure chamber system, according to claim 1, wherein said lock space part comprises a domeshape cylinder.
Claim 4
Dependent Claim
36 words
A diver's pressure chamber system, according to claim 1, wherein said lock space part has an inside diameter and an inside clear width which are greater than the outside dimensions of the known transfer pressure chambers.
Claim 5
Dependent Claim
40 words
A diver's pressure chamber system, according to claim 1, including a coupling carried on said tubular projection and engageable with said lock space part and forming a bayonet catch for hermetically interengaging said lock space part with said tubular projection.
Claim 6
Dependent Claim
66 words
A diver's pressure chamber system, according to claim 1, including a lock space member secured to the stationary pressure chamber and having said tubular projection, said lock space part having a flange engageable with said tubular projection and a coupling member engageable with the flange of said lock space part and said tubular projection for hermetically sealing said lock space part to said lock space member.
Claim 7
Dependent Claim
30 words
A diver's pressure chamber system according to claim 1, wherein said tubular projection is formed directly around said access, said lock space part being flanged directly to said tubular projection.
Claim 8
Dependent Claim
132 words
A diver's pressure chamber system comprising a fixed cylindrical member having a closed end and an opposite end with an access opening and an access door closing said opening, a seal projection extending outwardly from said access door, a separate portable lock space part comprising a cylindrical member having a closed outer end and an inner end with an inner flange engageable with the projection around said access door, coupling means interengaging said lock space part with said access door projection and sealing said lock space part thereto, and a sealed pressurizable diver's transfer container/positionable in said lock space and having a removable transfer container sealing cover which may be removed when the lock space is brought to a pressure comparable to the transfer container pressure and to the pressure chamber pressure.
Claim 9
Dependent Claim
132 words
A diver's pressure chamber system comprising a fixed cylindrical member having a closed end and an opposite end with an access opening and an access door closing said opening, a seal projection extending outwardly from said access door, a separate portable lock space part comprising a cylindrical member having a closed outer end and an inner end with an inner flange engageable with the projection around said access door, coupling means interengaging said lock space part with said access door projection and sealing said lock space part thereto, and a sealed pressurizable diver's transfer container/positionable in said lock space and having a removable transfer container sealing cover which may be removed when the lock space is brought to a pressure comparable to the transfer container pressure and to the pressure chamber pressure.
Claim 10
Dependent Claim
45 words
A diver's pressure chamber system, according to claim 7, wherein said stationary pressure chamber includes an additional lock space portion extending outwardly therefrom beyond said access door and having a separate access opening forming said projection, said projection being coupled to said lock space part.
References Cited (Backward Citations)
US3368556A
Cited
US3548516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |