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(12) Patent: | (11) CA 1250187 |
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(21) Application Number: | 466449 |
(54) English Title: | METHOD BY SUBMARINE OPERATIONS AT LARGE SEA DEPTHS |
(54) French Title: | METHODE VISANT DES OPERATIONS SOUS-MARINES A TRES GRANDES PROFONDEURS |
Status: | Expired |
(52) Canadian Patent Classification (CPC): |
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(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : | |
(74) Agent: | MARKS & CLERK |
(74) Associate agent: | |
(45) Issued: | 1989-02-21 |
(22) Filed Date: | 1984-10-26 |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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ABSTRACT OF THE DISCLOSURE
A method for submarine operations at large sea
depths, in which a diver bell is used designed and con-
structed to withstand an outer pressure D1, submerging said
bell to a sea depth where an outer pressure D3 exists, which
is considerably larger than D1, increasing the internal
pressure in the diver bell to an increased pressure D2 in
such a way that the difference between the pressure D3 and
D2 constantly is less than the pressure D1 for which the
diver bell is designed, and subjecting the personnel in the
diver bell before sumbersion to a phase of compression.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1250187 was not found.
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Title | Date |
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Forecasted Issue Date | 1989-02-21 |
(22) Filed | 1984-10-26 |
(45) Issued | 1989-02-21 |
Expired | 2006-02-21 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
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Application Fee | $0.00 | 1984-10-26 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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OSTLUND (O.C.) A/S |
Past Owners on Record |
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None |