Patent US2412686A successfully refreshed from Google Patents.
Patent US3786772A successfully refreshed from Google Patents.
US3786772A
Expired / Lapsed
US
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Catamaran ship{40 s structure
Assignee: Stradco Inventions & Research Co
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Filing: 1972-05-02
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Granted: 1974-01-22
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Expires: 1992-05-02
Abstract
Abstract A catamaran type vessel having a plurality of longitudinally extending hulls defining longitudinal propulsion channels intermediate said hull form and one or more elevators vertically liftable intermediate the hulls, so as to vary the height of the elevator with respect to the surface of the water. As a result, the ship may be used for the transport of cargo in a variety of vertical attitudes, as well as a dry dock. The elevator may be supported above the surface of the water or it may be lowered to permit the floating in of another vessel prior to dry docking operation.
Inventors
- 👤 F Broes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:30
CPC Classifications
B; B63; B63B; B63B25/00; B63B25/002; B63B25/006; B63B1/00; B63B1/02; B63B1/10; B63B1/12; B63C; B63C1/00; B63C1/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
A multi-hull ship comprising: A. two longitudinally extending hull forms defining a catamaran structure; B. a plurality of bows interposed between said hull forms and including longitudinally extending channels intermediate said bows; C. transverse beams extending topside between said hulls; D. at least one pair of superposed elevators keyed with respect to said hull forms by a keying element and independently liftable with respect to each other, said elevators extending longitudinally between said hull and aft of said bows, said elevators being reciprocable vertically with respect to the water''s surface; and including longitudinally extending channels registering with said longitudinally extending channels intermediate said bows; and E. hydraulic propulsion units supported in said hulls and in communication with said water, so as to drive said vessel.
Claim 2
Dependent Claim
125 words
A multi-hull ship comprising: A. two longitudinally extending hull forms defining a catamaran structure; B. a plurality of bows interposed between said hull forms and including longitudinally extending channels intermediate said bows; C. transverse beams extending topside between said hulls; D. at least one pair of superposed elevators keyed with respect to said hull forms by a keying element and independently liftable with respect to each other, said elevators extending longitudinally between said hull and aft of said bows, said elevators being reciprocable vertically with respect to the water''s surface; and including longitudinally extending channels registering with said longitudinally extending channels intermediate said bows; and E. hydraulic propulsion units supported in said hulls and in communication with said water, so as to drive said vessel.
Claim 3
Dependent Claim
41 words
A multi-hull ship as in claim 1, including stern configurations intermediate said longitudinally extending channels at said stern with an aft hydraulic propulsion unit communicating with said channels, so as to divert discharged water on either side of said stern configurations.
Claim 4
Dependent Claim
14 words
A multi-hull ship as in claim 1, said elevators being raised by cable means.
Claim 5
Dependent Claim
31 words
A multi-hull ship as in claim 3, said elevators being secured vertically with respect to said hulls by pin means extensible through said elevator and a portion of said hull form.
Claim 6
Dependent Claim
38 words
A multi-hull ship as in claim 4, said elevator including veRtically extending strut members complementally engaging individual track members supported in said hull form and including roller bearing means interposed between said track members and said strut members.
Claim 7
Dependent Claim
34 words
A multi-hull ship as in claim 5, said hull members including a plurality of vertically downwardly extending female posts, said vertically extending struts complementally engaging said posts, as said elevator is raised and lowered.
Claim 8
Dependent Claim
24 words
A multi-hull ship as in claim 6, including a plurality of roller elements secured inwardly of said posts so as to engage said strut.
Claim 9
Dependent Claim
17 words
A multi-hull ship as in claim 7, wherein said keying element has a T configuration in cross-section.
Claim 10
Dependent Claim
28 words
A multi-hull ship as in claim 8, wherein said elevator may be lowered beneath said hull forms, so as to support said structure in a dry dock attitude.
Claim 11
Dependent Claim
24 words
A multi-hull ship as in claim 9, said elevator including pump means permitting ballasting intake of water into said elevator and said hull form.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |