US4924797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-boat hull
Assignee: Akzo SRL
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Filing: 1988-07-01
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Granted: 1990-05-15
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Expires: 2008-07-01
Abstract
Abstract A motor-boat hull (10) includes a planing bottom (C) having a V-shaped forward portion, two float-like side portions (14) connected forwardly to the V-shaped portion (12), and a flat recessed aft portion (16) delimited by the side portions (14) and forwardly by a transverse step (18) connecting it with the V-shaped forward portion (12) of the bottom (C).
Inventors
- 👤 Franco Solia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:28
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/18; B63B1/20; B63B2001/201; B63B2001/203
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
A motor-boat hull of the type having a planing bottom comprising: a V-shaped forward portion extending from the bow to a central zone of the bottom; two substantially flat-bottomed side portions which converge and decrease in width from the stern to the bow and are connected to the V-shaped forward portion of the bottom; and a substantially flat recessed aft portion delimited laterally by the side portions and forwardly by a transverse step connecting it with the V-shaped forward portion of the bottom; wherein the bottom has a deep central V-shaped zone having a tapered end portion which extends aft of the step in overlying relation with the recessed aft portion; and propeller means located in said central zone aft of the tapered end portion of the central V-shaped zone.
Claim 2
Dependent Claim
130 words
A motor-boat hull of the type having a planing bottom comprising: a V-shaped forward portion extending from the bow to a central zone of the bottom; two substantially flat-bottomed side portions which converge and decrease in width from the stern to the bow and are connected to the V-shaped forward portion of the bottom; and a substantially flat recessed aft portion delimited laterally by the side portions and forwardly by a transverse step connecting it with the V-shaped forward portion of the bottom; wherein the bottom has a deep central V-shaped zone having a tapered end portion which extends aft of the step in overlying relation with the recessed aft portion; and propeller means located in said central zone aft of the tapered end portion of the central V-shaped zone.
Claim 3
Dependent Claim
32 words
A motor-boat hull according to claim 1 further comprising a pair of flaps hinged to the aft portion of said flat-bottomed side portions respectively to define aft extensions of said side portions.
Claim 4
Dependent Claim
15 words
A motor-boat hull according to claim 1, wherein said propeller means is a ducted propeller.
References Cited (Backward Citations)
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Cited
US3547064A
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US3608512A
Cited
US3661109A
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US3789792A
Cited
US4193370A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |