US4041561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-reinforced plastic unitized boat hull frame
Assignee: Individual
•
Filing: 1976-11-12
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Granted: 1977-08-16
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Expires: 1996-11-12
Abstract
Abstract A unitized fiber-reinforced plastic boat hull frame is disclosed in which the structural members, most commonly a keel and ribs, comprising the frame are constructed of fiber-reinforced plastic formed within a mold corresponding to the shapes of the various members. The members are attached to one another by either contacting them together prior to the completion of curing to produce a plastic bond, or with appropriate adhesives after curing. Planking comprised of any suitable material, wood for example, is added to complete the hull.
Inventors
- 👤 Richard V. Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:28
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
A unitary fiber-reinforced plastic boat hull frame comprising in combination: a. at least one longitudinal frame member consisting of fiber-reinforced plastic; and b. a plurality of individual and separate transverse frame members positioned transverse said longitudinal frame member, at least one transverse member extending as an integral member from one side of the longitudinal member to the other, said transverse frame members consisting of fiber-reinforced plastic, said transverse and longitudinal frame members arranged to overlap one another, said longitudinal and said transverse frame members attached to each other at the overlap interface of said members.
Claim 2
Dependent Claim
95 words
A unitary fiber-reinforced plastic boat hull frame comprising in combination: a. at least one longitudinal frame member consisting of fiber-reinforced plastic; and b. a plurality of individual and separate transverse frame members positioned transverse said longitudinal frame member, at least one transverse member extending as an integral member from one side of the longitudinal member to the other, said transverse frame members consisting of fiber-reinforced plastic, said transverse and longitudinal frame members arranged to overlap one another, said longitudinal and said transverse frame members attached to each other at the overlap interface of said members.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 wherein said longitudinal and said transverse frame members are attached to each other by a fiber-reinforced plastic self bond resulting from contacting and assembling said members in the uncured state.
Claim 4
Dependent Claim
22 words
The apparatus of claim 1 wherein said longitudinal and said transverse frame members are attached to each other by an adhesive bond.
Claim 5
Dependent Claim
10 words
The apparatus of claim 3 wherein said adhesive comprises epoxy.
Claim 6
Dependent Claim
21 words
The apparatus of claim 1 wherein said longitudinal frame member comprises a keel and wherein said transverse frame members comprise ribs.
Claim 7
Dependent Claim
20 words
The apparatus of claim 5 further including a plurality of plank members attached to and positioned transverse said rib members.
Claim 8
Dependent Claim
13 words
The apparatus of claim 6 wherein said plank members are comprised of wood.
Claim 9
Dependent Claim
18 words
The apparatus of claim 6 wherein said plank members are attached to said rib members by an adhesive.
Claim 10
Dependent Claim
10 words
The apparatus of claim 8 wherein said adhesive comprises epoxy.
Claim 11
Dependent Claim
26 words
The apparatus of claim 1 wherein said transverse frame members comprise ribs of a step profile configuration to provide a finished hull of lap strake construction.
References Cited (Backward Citations)
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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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |