US4702189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-hulled marine craft
Assignee: Blohm and Voss GmbH
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Filing: 1986-05-14
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Granted: 1987-10-27
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Expires: 2006-05-14
Abstract
Abstract In a multiple-hulled marine craft an opening (313) which can be closed in air-tight and water-tight manner by pivotable flaps (314) is located in the transverse deck (312) beneath the connection structure between the two floats (311) (FIG. 2).
Inventors
- 👤 Norbert Schlichthorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:58
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/06; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A multiple-hulled air cushion marine craft, comprising: at least two floats which extend in the direction of travel of the craft said floats being arranged spaced apart from, and parallel to, one another, and connected together at a top thereof by a connection structure which carries built-in structures and which has, at a bottom thereof a transverse deck disposed above the waterline, at least one closable opening located in the transverse deck and closable in a water-tight and gas-tight manner by a plate arrangement, said opening being rectangular, and its dimensions corresponding to the horizontal cross-section of a container having an open base and which is arranged above the opening in vertical alignment therewith and contains an air-tight chamber, said container being connected at a lower edge thereof via releasable sealing means with support parts of the connection structure.
Claim 2
Dependent Claim
139 words
A multiple-hulled air cushion marine craft, comprising: at least two floats which extend in the direction of travel of the craft said floats being arranged spaced apart from, and parallel to, one another, and connected together at a top thereof by a connection structure which carries built-in structures and which has, at a bottom thereof a transverse deck disposed above the waterline, at least one closable opening located in the transverse deck and closable in a water-tight and gas-tight manner by a plate arrangement, said opening being rectangular, and its dimensions corresponding to the horizontal cross-section of a container having an open base and which is arranged above the opening in vertical alignment therewith and contains an air-tight chamber, said container being connected at a lower edge thereof via releasable sealing means with support parts of the connection structure.
Claim 3
Dependent Claim
62 words
A marine craft in accordance with claim 1, wherein the sealing means comprise an inflatable sealing hose which extends all around and surrounds a lower edge of the container, is arranged in a peripheral groove of the support parts surrounding the opening, and in inflated state, sealingly contacts all around an outer peripheral sealing counterflange of the lower edge of the container.
Claim 4
Dependent Claim
27 words
A marine craft in accordance with claim 1, comprising bearing blocks which hold the container at a front and a rear end thereof on the connection structure.
Claim 5
Dependent Claim
14 words
A marine craft in accordance with claim 3, wherein said bearing blocks are shock-damped.
Claim 6
Dependent Claim
30 words
A marine craft in accordance with claim 1, wherein the plate arrangement consists of two flaps which are pivotable about pivot axes pointing in the longitudinal direction of the craft.
Claim 7
Dependent Claim
35 words
A marine craft in accordance with claim 1, comprising suspension devices in said container for articles to be dropped through the opening, and a control device arranged outside said chamber for releasing said suspension devices.
References Cited (Backward Citations)
US3677212A
Cited
US4312287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |