US3930455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat hull construction
Assignee: Individual
•
Filing: 1974-09-19
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Granted: 1976-01-06
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Expires: 1994-09-19
Abstract
Abstract A boat hull construction having a bottom formed with a central longitudinal surface and side surfaces spaced on either side of the central surface. Both the central surface and the side surfaces are flat in a cross sectional direction, and the side surfaces are separated from the central surface by upwardly arched channels. The three parallel flat surfaces enable the boat to plane at lower speeds and provide improved lateral stability.
Inventors
- 👤 Harry Bremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:48
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/18; B63B1/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
A modified deep V boat hull construction, comprising a bottom having a central surface extending longitudinally from the stern toward the bow, said central surface being generally flat in a cross sectional direction, said bottom having longitudinally extending side surfaces spaced laterally on either side of said central surface, said side surfaces being generally flat in a cross sectional direction, at any cross sectional plane through the hull the line of intersection of each of said side surfaces and said plane being horizontal and the line of intersection of said central surface and said plane being horizontal and at a lower level than said first named lines of intersection, and said hull having longitudinally extending upwardly arched curved channels connecting said central surface with each side surface, said channels having a substantially uniform lateral width from the stern of the hull toward the bow.
Claim 2
Dependent Claim
144 words
A modified deep V boat hull construction, comprising a bottom having a central surface extending longitudinally from the stern toward the bow, said central surface being generally flat in a cross sectional direction, said bottom having longitudinally extending side surfaces spaced laterally on either side of said central surface, said side surfaces being generally flat in a cross sectional direction, at any cross sectional plane through the hull the line of intersection of each of said side surfaces and said plane being horizontal and the line of intersection of said central surface and said plane being horizontal and at a lower level than said first named lines of intersection, and said hull having longitudinally extending upwardly arched curved channels connecting said central surface with each side surface, said channels having a substantially uniform lateral width from the stern of the hull toward the bow.
Claim 3
Dependent Claim
46 words
The boat hull construction of claim 1, wherein the central surface has a substantially uniform lateral width from the stern to a location adjacent the bow and said side surfaces each have a substantially uniform lateral width from the stern to a location adjacent the bow.
Claim 4
Dependent Claim
40 words
The boat hull construction of claim 1, wherein the portion of the central surface disposed adjacent the stern has a slightly concave configuration in a stern-to-bow direction and the side surfaces have a slightly convex configuration in a stern-to-bow direction.
Claim 5
Dependent Claim
20 words
The boat hull construction of claim 1, wherein the central surface has a greater lateral width than the side surfaces.
Claim 6
Dependent Claim
139 words
A modified deep V boat hull construction comprising a bottom having a central longitudinally extending generally V-shaped keel with the bottom of the keel terminating in a laterally flat central surface, said bottom having longitudinally downwardly extending generally V-shaped side ridges spaced laterally on both sides of the central keel, said side edges terminating in laterally flat side surfaces, at any vertical cross sectional plane through the hull said side surfaces being generally parallel to each other and generally parallel to said central surface and said central surface being at a lower level than said side surfaces, and said hull having longitudinally extending upwardly arched continuously curved channels connecting said keel with said side ridges, each of said channels having a greater lateral width than said central surface and having a greater lateral width than the individual side surfaces.
Claim 7
Dependent Claim
139 words
A modified deep V boat hull construction comprising a bottom having a central longitudinally extending generally V-shaped keel with the bottom of the keel terminating in a laterally flat central surface, said bottom having longitudinally downwardly extending generally V-shaped side ridges spaced laterally on both sides of the central keel, said side edges terminating in laterally flat side surfaces, at any vertical cross sectional plane through the hull said side surfaces being generally parallel to each other and generally parallel to said central surface and said central surface being at a lower level than said side surfaces, and said hull having longitudinally extending upwardly arched continuously curved channels connecting said keel with said side ridges, each of said channels having a greater lateral width than said central surface and having a greater lateral width than the individual side surfaces.
Claim 8
Dependent Claim
45 words
The boat hull construction of claim 5, wherein said central surface has a substantially uniform width in a lateral direction and said side surfaces each having a substantially uniform width in a lateral direction, said central surface having a greater width than said side surfaces.
References Cited (Backward Citations)
US2938490A
Cited
US3077851A
Cited
US3191572A
Cited
US3226739A
Cited
US3259092A
Cited
US3600733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |