US4276844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft sailboard
Assignee: BMC TOYS INCORPORATED (A DELAWARE CORPORATION)
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Filing: 1979-06-18
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Granted: 1981-07-07
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Expires: 1999-06-18
Abstract
Abstract The invention is an improvement in the construction of the sailboard portion of windsurfers wherein the usual hard-foam slab hull typical of surfboard construction is replaced by a slab of soft foam, the only rigid structure of the entire board being a pair of closely spaced fiberglass stringers longitudinally extended along the midline of the board, and mounts for the mast, daggerboard and fin, which mounts are sandwiched between the two longitudinal stringers which are embedded centrally in the soft foam slab.
Inventors
- 👤 Michael J. Fremont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:11
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/57; B63B32/40; B63B32/50; B63B32/60; B63B32/66; B63B32/68
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A soft sailboard comprising an elongated soft foam slab, elongated longitudinally extending generally rigid support means embedded in said slab adjacent the longitudinal midline thereof, said support means comprising a pair of spaced parallel stringers extending for substantially the full length of said slab, said stringers having opposed planar surfaces, and a box-like mast mount insert disposed between and connected to said opposed planar surfaces of said stringers.
Claim 2
Dependent Claim
68 words
A soft sailboard comprising an elongated soft foam slab, elongated longitudinally extending generally rigid support means embedded in said slab adjacent the longitudinal midline thereof, said support means comprising a pair of spaced parallel stringers extending for substantially the full length of said slab, said stringers having opposed planar surfaces, and a box-like mast mount insert disposed between and connected to said opposed planar surfaces of said stringers.
Claim 3
Dependent Claim
24 words
The sailboard of claim 1, and box-like daggerwell and fin channel inserts disposed between and connected to said opposed planar surfaces of said stringers.
Claim 4
Dependent Claim
47 words
The sailboard of claim 2, further comprising an impermeable skin encapsulating said slab, each of said inserts having at least one externally accessible opening and being provided with a continuous peripheral flange around each of said openings, said flanges being in overlapped sealing relation to said skin.
Claim 5
Dependent Claim
52 words
The sailboard of claim 3, said daggerwell insert comprising a pair of end-abutting half inserts defining an elongated slot-like opening extending completely through said slab, said fin channel and mast mount inserts being in the form of box-like enclosures which are accessible, respectively, from the bottom and top sides of said slab.
References Cited (Backward Citations)
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Cited
US3487800A
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US3929549A
Cited
US3996868A
Cited
US3965514A
Cited
US4044416A
Cited
US4161796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |