US3763810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed boat with planing hull
Assignee: Blade Hulls Inc
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Filing: 1972-03-24
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Granted: 1973-10-09
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Expires: 1992-03-24
Abstract
Abstract A boat capable of cutting through rough waves at high speed with astonishing stability has a hull provided with a flat planing surface which in plan is the shape of a thin wedge or delta. The sides of the boat rise upwardly and outwardly with a simple concave curvature from the two edges leading from a knife edge bow at the point of the wedge. The slender wedge shape moving through the water at high speeds develops continuous spray sheets up its sides which are intercepted by the outwardly curving portions of the hull sides. Spray rails or deflectors may also be utilized to intercept the spray sheet, such deflectors being inclined at a small angle to the bottom of the planing surface. The knife edge bow rises upwardly and forwardly with a concave curvature from the point of the wedge and eventually terminates in a forwardly sloped bow transom. A keel skeg minimizes side slipping. A stern transom, which rises substantially perpendicular to the trailing edge of the delta or wedge may have a rearwardly extending bustle secured thereto for buoyancy and roll stability at low speeds.
Inventors
- 👤 P Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:24
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/18; B63B1/20; B63B1/02; B63B1/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
128 words
A boat having a planing hull capable of operating with stability at high speeds in rough seas comprising: a. a thin wedge shaped planing surface forming a bottom of the hull with the apex of the wedge at a bow portion of the hull, b. a knife edge at a lower portion of the bow of the hull extending upwardly and forwardly of the apex of the wedge, c. a forwardly inclined blunt bow transom forming the upper portion of the bow of the hull above the knife edge, d. concave sides of the hull extending upwardly and outwardly along the sides of the wedge shaped planing surface and positioned to intercept spray sheets thrown up from sides of the planing hull to assist in stabilizing the boat.
Claim 2
Dependent Claim
128 words
A boat having a planing hull capable of operating with stability at high speeds in rough seas comprising: a. a thin wedge shaped planing surface forming a bottom of the hull with the apex of the wedge at a bow portion of the hull, b. a knife edge at a lower portion of the bow of the hull extending upwardly and forwardly of the apex of the wedge, c. a forwardly inclined blunt bow transom forming the upper portion of the bow of the hull above the knife edge, d. concave sides of the hull extending upwardly and outwardly along the sides of the wedge shaped planing surface and positioned to intercept spray sheets thrown up from sides of the planing hull to assist in stabilizing the boat.
Claim 3
Dependent Claim
28 words
A boat having a planing hull as in claim 1 wherein the knife edge is forwardly inclined in a concave manner and the blunt bow transom if flat.
Claim 4
Dependent Claim
38 words
A boat having a planing hull as in claim 1 wherein said concave sides are each defined by a smooth simple curve in only one direction and extend over the entire surface of the sides of the wedge.
Claim 5
Dependent Claim
24 words
A boat having a planing hull as in claim 1 further comprising turning side slip minimizing means secured to the bottom of the hull.
Claim 6
Dependent Claim
27 words
A boat having a planing hull as in claim 4 wherein the side slip minimizing means is a keel skeg along a longitudinal axis of the hull.
Claim 7
Dependent Claim
28 words
A boat having a planing hull as in claim 4 wherein the side slip minimizing means is a fin keel positioned on a longitudinal axis of the hull.
Claim 8
Dependent Claim
24 words
A boat having a planing hull as in claim 1 further comprising spray sheet deflector means attached to the concave sides of the hull.
Claim 9
Dependent Claim
25 words
A boat having a planing hull as in claim 7 wherein the spray sheet deflector means are inclined at an angle to the planing surface.
Claim 10
Dependent Claim
24 words
A boat having a planiNg hull as in claim 8 wherein the spray sheet deflector means comprise a plurality of separated spaced deflector sections.
Claim 11
Dependent Claim
19 words
A boat having a planing hull as in claim 1 further comprising propeller torque counteracting means on the hull.
Claim 12
Dependent Claim
32 words
A boat having a planing hull as in claim 10 wherein the propeller torque counteracting means is a trim tab attached to one side of the bottom rear of the planing surface.
Claim 13
Dependent Claim
28 words
A boat having a planing hull as in claim 1 wherein the included angle of the apex of the wedge shaped planing surface is between 10* and 30*.
Claim 14
Dependent Claim
18 words
A boat having a planing hull as in claim 1 wherein the boat is driven by motive power.
Claim 15
Dependent Claim
78 words
A boat as set forth in claim 13 further comprising a bustle portion secured to and extending aft of said stern transom, said bustle having a bottom surface stepped up relative to said planing surface, concave sides having a curvature similar to the curvature of the sides of the boat along said wedge-shaped planning surface and a central longitudinally extending notched portion in the bottom surface to provide clearance for a stern drive extending through the stern transom.
Claim 16
Dependent Claim
28 words
A boat having a planing hull as in claim 13 wherein the motive power is engine means carried by the hull driving propeller means under the planing surface.
Claim 17
Dependent Claim
26 words
A boat having a planing hull as in claim 1 wherein the boat is a flying boat and the hull is a portion of a fuselage.
Claim 18
Dependent Claim
35 words
A boat having a planing hull as in claim 1 wherein the boat is a trimaran with a hull as defined in front and a pair of spaced apart wedge shaped spaced apart hulls aft.
Claim 19
Dependent Claim
22 words
A boat having a planing hull as in claim 17 wherein the aft hull sides are concave on their outer surfaces only.
Claim 20
Dependent Claim
30 words
A boat having a planing hull as in claim 1 further comprising a spray protector extending outward from the bow forwardly of the top portion of the blunt bow transom.
Claim 21
Dependent Claim
45 words
A boat as set forth in claim 1 wherein said wedge shaped planing surface is defined by a triangular sheet of material having integral flanges about the periphery which form a receptacle and further comprising ballast means disposed in said receptacle forming smooth bottom surface.
Claim 22
Dependent Claim
25 words
A boat as set forth in claim 1 having a deck which is wedge shaped similar to said planing surface but having a larger area.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |