Patent US2407345A successfully refreshed from Google Patents.
Patent US3747550A successfully refreshed from Google Patents.
US3747550A
Expired / Lapsed
US
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Plastic sailboat body and keel assembly
Assignee: Individual
•
Filing: 1972-03-02
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Granted: 1973-07-24
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Expires: 1992-03-02
Abstract
Abstract A fiber reinforced plastic boat hull with a tapered bottom recess receiving the upper end of a keel or center board and a floor or partition wall spanning the interior of the hull in spaced relation above the bottom thereof and secured around its periphery to the hull to form a reinforcing strut or stringer. The hull recess and upper end of the keel are of generally frusto-pyramid shape to center the keel in fixed wedged relation with the hull. Foam plastic fills the space between the bottom of the hull and the floor plate. The keel is a hollow molded plastic unit with a weight in the bottom thereof and also filled with foam plastic.
Inventors
- 👤 H Stoeberl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:24
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24; B63B3/00; B63B3/14; B63B3/38; B63B35/00; B63B2035/009; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
61 words
A plastic boat body comprising a molded hull portion with a keel receiving recess in the bottom thereof, a molded plastic floor tray in said hull and sealed around the periphery thereof to the hull, a molded plastic keel having a head portion fitting said recess in the bottom of the hull and suspension means attaching the keel to the hull.
Claim 2
Dependent Claim
61 words
A plastic boat body comprising a molded hull portion with a keel receiving recess in the bottom thereof, a molded plastic floor tray in said hull and sealed around the periphery thereof to the hull, a molded plastic keel having a head portion fitting said recess in the bottom of the hull and suspension means attaching the keel to the hull.
Claim 3
Dependent Claim
14 words
The boat body of claim 1 wherein the hull recess has a frustro-pyramid shape.
Claim 4
Dependent Claim
20 words
The boat body of claim 1 wherein the space between the hull and the floor is filled with plastic foam.
Claim 5
Dependent Claim
30 words
The boat body of claim 1 wherein the floor tray is flanged upwardly in the hull and has the flange thereof bonded to the hull for forming a reinforcing stringer.
Claim 6
Dependent Claim
16 words
The boat body of claim 4 wherein the stringer is covered with a reinforcing plastic strip.
Claim 7
Dependent Claim
46 words
The boat body of claim 1 wherein the molded plastic hull has a deck and the periphery of the floor tray extends upwardly toward the deck and the space between the hull and floor tray is filled with plastic foam extending upwardly toward the deck level.
Claim 8
Dependent Claim
29 words
The boat body of claim 1 wherein the space between the hull and floor tray has bags therein adapted to be filled with air, foam or other lightweight material.
Claim 9
Dependent Claim
21 words
The boat body of claim 1 wherein the floor tray is inclined from a longitudinal center line to the boat hull.
Claim 10
Dependent Claim
15 words
The boat body of claim 1 including two floor trays with a foam layer therebetween.
Claim 11
Dependent Claim
18 words
The boat body of claim 1 wherein the floor tray is at the water level of the hull.
Claim 12
Dependent Claim
30 words
The boat body of claim 1 wherein the floor tray has a peripheral drain channel and a drain valve is provided in the hull to drain water from the channel.
Claim 13
Dependent Claim
18 words
The boat body of claim 1 including reinforcing braces between the floor and hull for supporting a mast.
Claim 14
Dependent Claim
22 words
The boat body of claim 1 including reinforcing members between the floor tray and surrounding the recess defining portion of the hull.
Claim 15
Dependent Claim
17 words
The boat body of claim 1 wherein the floor tray has a longitudinally extending supporting piece thereunder.
Claim 16
Dependent Claim
25 words
The boat body of claim 1 wherein additional strengthening laminate layers are provided under the floor tray for a mast pedestal and a front stay.
Claim 17
Dependent Claim
27 words
The boat body according to claim 1 including a distributor tube in the floor tray for filling the space between the tray and hull with plastic foam.
Claim 18
Dependent Claim
21 words
The boat body of claim 1 including a separate layer of material between the head of the keel and the recess.
Claim 19
Dependent Claim
23 words
The boat body of claim 1 including a spacer tube surrounding the suspension mounting for the keel between the hull and floor tray.
Claim 20
Dependent Claim
25 words
The boat body of claim 1 wherein the keel is hollow, has a ballast weight at the bottom thereof and is filled with plastic foam.
Claim 21
Dependent Claim
16 words
The boat body of claim 1 wherein the keel is formed from two molded plastic halves.
Claim 22
Dependent Claim
35 words
The boat body of claim 1 wherein the keel is hollow and filled with material having a low specific weight in the upper end thereof and a high specific weight in the lower end thereof.
Claim 23
Dependent Claim
22 words
The boat body of claim 1 wherein the keel is hollow and contains conduits and the like for recorders and measuring devices.
Claim 24
Dependent Claim
21 words
The boat body of claim 1 where the stern of the hull has a molded-in tubular bearing for the rudder shank.
Claim 25
Dependent Claim
22 words
The boat body of claim 1 wherein the deck tray terminates short of the stern of the hull in an upstanding bulkhead.
Claim 26
Dependent Claim
20 words
The boat body of claim 1 wherein the recess of the hull is slotted for receiving a removable center board.
Claim 27
Dependent Claim
45 words
A fiber reinforced plastic sailboat construction comprising a one-piece molded plastic hull with an elongated tapered recess in the bottom thereof along the longitudinal center line, a molded plastic keel having a head fitting said recess and suspension bolts securing the head in said recess.
Claim 28
Dependent Claim
45 words
A fiber reinforced plastic sailboat construction comprising a one-piece molded plastic hull with an elongated tapered recess in the bottom thereof along the longitudinal center line, a molded plastic keel having a head fitting said recess and suspension bolts securing the head in said recess.
Claim 29
Dependent Claim
71 words
A fiber reinforced plastic sailboat construction comprising a one-piece molded plastic hull with an elongated tapered recess in the bottom thereof along the longitudinal center line, said recess having a flat top wall, a molded plastic keel having a head fitting said recess, suspension bolts securing the head in said recess, and a molded plastic floor secured around its periphery in the hull resting on said top wall of the recess.
Claim 30
Dependent Claim
71 words
A fiber reinforced plastic sailboat construction comprising a one-piece molded plastic hull with an elongated tapered recess in the bottom thereof along the longitudinal center line, said recess having a flat top wall, a molded plastic keel having a head fitting said recess, suspension bolts securing the head in said recess, and a molded plastic floor secured around its periphery in the hull resting on said top wall of the recess.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |