Patent US3593354A successfully refreshed from Google Patents.
US3593354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat hull construction
Assignee: AEROMARINE CORP
•
Filing: 1969-08-04
•
Granted: 1971-07-20
•
Expires: 1989-08-04
Abstract
Abstract A sandwich construction for a boat hull incorporating integrally molded ribs having high strength at points remote from the outer hull surface and thereby providing a large structural moment resistant to distortion and failure under load or impact, lightweight for a given strength, and economy of fabrication.
Inventors
- 👤 John Henry Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:54
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A hull construction comprising: a molded continuous outer skin having an outer surface defining a hull surface; a layer of filler material of lower density than said outer skin bonded within said outer skin; a molded continuous inner skin of higher density than said layer of filler material, bonded within said layer of filler material; portions of said inner skin being inwardly indented to form reinforcing channels; elongated, thin, high-tensile strength elements encapsulated in a bonding agent in said channels near the inner extremities thereof; and core elements of lower density than said inner skin encapsulated within said channels and bonded thereto.
Claim 2
Dependent Claim
102 words
A hull construction comprising: a molded continuous outer skin having an outer surface defining a hull surface; a layer of filler material of lower density than said outer skin bonded within said outer skin; a molded continuous inner skin of higher density than said layer of filler material, bonded within said layer of filler material; portions of said inner skin being inwardly indented to form reinforcing channels; elongated, thin, high-tensile strength elements encapsulated in a bonding agent in said channels near the inner extremities thereof; and core elements of lower density than said inner skin encapsulated within said channels and bonded thereto.
Claim 3
Dependent Claim
20 words
The hull construction of claim 1 wherein said elements of high-tensile strength are glass rovings encapsulated in a bonding agent.
Claim 4
Independent Claim
108 words
The method of constructing a hull with integrally molded reinforcing channels including the steps of: producing a male mold having channel indentations upon the outer surface thereof, laying up a first portion of an inner skin of said hull upon said male mold and indenting said portion to conform to said channel indentations, adjacent the inner extremities of said channel indentations bonding elements of high-tensile strength, inserting core elements of lower density than said inner skin within said channel indentations and bonding them to the interior thereof, laying up a second portion of said inner skin outside said first portion and said core elements and bonding it thereto.
Claim 5
Independent Claim
108 words
The method of constructing a hull with integrally molded reinforcing channels including the steps of: producing a male mold having channel indentations upon the outer surface thereof, laying up a first portion of an inner skin of said hull upon said male mold and indenting said portion to conform to said channel indentations, adjacent the inner extremities of said channel indentations bonding elements of high-tensile strength, inserting core elements of lower density than said inner skin within said channel indentations and bonding them to the interior thereof, laying up a second portion of said inner skin outside said first portion and said core elements and bonding it thereto.
Claim 6
Dependent Claim
57 words
The method claimed in claim 3 further including the steps of: laying up filler material of lower density than said inner skin upon the outside of said second portion of said inner skin and bonding it thereto, laying up an outer skin of greater density than said filler material outside said filler material and bonding it thereto.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |