Patent US3848284A successfully refreshed from Google Patents.
US3848284A
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US
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Stringer system for glass fiber-reinforced boat hulls
Assignee: Reinell Boats Inc
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Filing: 1973-11-14
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Granted: 1974-11-19
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Expires: 1993-11-14
Abstract
Abstract Boat hulls of glass fiber-reinforced resin construction are provided with a custom-molded, rigid, synthetic foam stringer member providing an index to locate floor and interior components, support floor, enclose fuel tank, incorporate bilge drains, provide storage space, and stiffening for the hull and transom. The stringer member, adapted to fit the inner contour of the boat hull, is positioned in place in the hull and secured therein by application of a layer or layers of glass fiberreinforced resin over the stringer member and adjacent portions of the hull. A floor member is secured to the upper surface of the stringer member and a subsequent layer or layers of glass fiber-reinforced resin applied over the floor member and joints between the floor member and the hull giving a continuous, uninterrupted surface. Additional floation may be provided by injecting an expanding foam into one or more of the hollow spaces defined by the boat hull, floor member and stringer members. Motor mounts may be made an integral part of the stringer member where desired.
Inventors
- 👤 D Livingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:09
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
191 words
A custom-molded stringer member for positioning in the interior of a glass fiber-reinforced resin hull of a boat to provide stiffening for the hull of the boat and support for the floor and transom of the boat, comprising: a stringer member including (1) one or more molded, rigid, synthetic foam beams extending essentially parallel to the length of hull of the boat having an essentially planar upper surface and a lower surface adapted to fit the contour of the hull of the boat and (2) one or more rigid cross braces extending between the beams, each having a planar upper surface and a lower surface adapted to fit the contour of the hull of the boat, one or more layers of glass fiber-reinforced resin over the stringer member and intersection of the stringer member with the hull of the boat for securing the stringer member to the boat hull and making it an integral part thereof, a floor member adhered to the upper surface of the stringer member, and one or more layers of glass fiber-reinforced resin laid over the floor member and intersection between the floor member and boat hull.
Claim 2
Dependent Claim
191 words
A custom-molded stringer member for positioning in the interior of a glass fiber-reinforced resin hull of a boat to provide stiffening for the hull of the boat and support for the floor and transom of the boat, comprising: a stringer member including (1) one or more molded, rigid, synthetic foam beams extending essentially parallel to the length of hull of the boat having an essentially planar upper surface and a lower surface adapted to fit the contour of the hull of the boat and (2) one or more rigid cross braces extending between the beams, each having a planar upper surface and a lower surface adapted to fit the contour of the hull of the boat, one or more layers of glass fiber-reinforced resin over the stringer member and intersection of the stringer member with the hull of the boat for securing the stringer member to the boat hull and making it an integral part thereof, a floor member adhered to the upper surface of the stringer member, and one or more layers of glass fiber-reinforced resin laid over the floor member and intersection between the floor member and boat hull.
Claim 3
Dependent Claim
41 words
The stringer system of claim 1 including one or more layers of glass fiber-reinforced resin between the boat hull and the lower surface of the stringer member for bonding the stringer member to the boat hull at points of contact thereof.
Claim 4
Dependent Claim
38 words
The stringer member of claim 1 wherein the upper surface of the beams and cross braces includes a molded in situ exposed wood member providing stiffening to the stringer member and means of adhering the floor member thereto.
Claim 5
Dependent Claim
29 words
The stringer member of claim 1 including molded-in-place bilge drain tubes extending the width of the beams and cross braces for draining water from the interior of the hull.
Claim 6
Dependent Claim
24 words
The stringer system of claim 1 wherein the rear portion of each of the parallel beams of the stringer includes molded-in-situ structural motor mounts.
Claim 7
Dependent Claim
155 words
A glass fiber-reinforced resin boat comprising: a molded, glass fiber-reinforced resin hull, a custom-molded stringer member of rigid, synthetic foam secured in the boat hull providing stiffening for the hull and support for the floor and transom of the boat, the stringer member including (1) molded, rigid, synthetic foam beams extending essentially parallel to the the length dimension of the hull of the boat having a planar upper surface and a lower surface adapted to fit the contour of the interior of the hull of the boat and (2) integral, molded, rigid foam cross braces extending between the beams connecting the beams together, one or more layers of glass fiber-reinforced resin applied over the beam and cross braces and the intersection between the beams, cross braces and the hull for securing the stringer member to the hull to form an integral part thereof, and a floor member secured to the stringer member and supported thereby.
Claim 8
Dependent Claim
155 words
A glass fiber-reinforced resin boat comprising: a molded, glass fiber-reinforced resin hull, a custom-molded stringer member of rigid, synthetic foam secured in the boat hull providing stiffening for the hull and support for the floor and transom of the boat, the stringer member including (1) molded, rigid, synthetic foam beams extending essentially parallel to the the length dimension of the hull of the boat having a planar upper surface and a lower surface adapted to fit the contour of the interior of the hull of the boat and (2) integral, molded, rigid foam cross braces extending between the beams connecting the beams together, one or more layers of glass fiber-reinforced resin applied over the beam and cross braces and the intersection between the beams, cross braces and the hull for securing the stringer member to the hull to form an integral part thereof, and a floor member secured to the stringer member and supported thereby.
Claim 9
Dependent Claim
36 words
The boat of claim 6 including one or more layers of glass fiber-reinforced resin over the floor member for sealing the intersection between the floor member and the hull and providing a continuous, uninterrupted upper surface.
Claim 10
Dependent Claim
40 words
The boat of claim 7 wherein one or more of the hollow spaces defined by the floor member, hull, cross braces and beams of the stringer member is filled with an expanding synthetic foam providing additional flotation for the boat.
Claim 11
Independent Claim
162 words
A method of providing support for the floor in a boat and stiffening for the hull and transom of a boat of glass fiber-reinforced resin construction comprising: providing a boat hull of glass fiber-reinforced resin construction, providing a custom-molded stringer member of rigid, molded synthetic foam having molded, rigid, synthetic foam beams extending essentially parallel to the length dimension of the hull of the boat having a planar upper surface and a lower surface adapted to fit the contour of the inner hull of the boat connected by integral, molded, foam cross braces, positioning the one-piece stringer member in place in the hull of the boat, securing the stringer member in place in the hull by application of one or more layers of glass fiber-reinforced resin over the stringer member and its intersection with the hull of the boat, securing a floor member to the upper surface of the stringer member, and sealing the joints between the hull and the floor member.
Claim 12
Independent Claim
162 words
A method of providing support for the floor in a boat and stiffening for the hull and transom of a boat of glass fiber-reinforced resin construction comprising: providing a boat hull of glass fiber-reinforced resin construction, providing a custom-molded stringer member of rigid, molded synthetic foam having molded, rigid, synthetic foam beams extending essentially parallel to the length dimension of the hull of the boat having a planar upper surface and a lower surface adapted to fit the contour of the inner hull of the boat connected by integral, molded, foam cross braces, positioning the one-piece stringer member in place in the hull of the boat, securing the stringer member in place in the hull by application of one or more layers of glass fiber-reinforced resin over the stringer member and its intersection with the hull of the boat, securing a floor member to the upper surface of the stringer member, and sealing the joints between the hull and the floor member.
Claim 13
Dependent Claim
37 words
The method of claim 9 wherein sealing includes applying one or more layers of glass fiber-reinforced resin over the entire floor member and its intersection with the hull of the boat to provide a continuous, uninterrupted surface.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |