Patent US4136630A successfully refreshed from Google Patents.
US4136630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sail batten
Assignee: Individual
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Filing: 1977-12-21
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Granted: 1979-01-30
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Expires: 1997-12-21
Abstract
Abstract A tapered sail batten comprises two external generally flat sheets, and an interposed corrugated core sheet, formed of a fiber reinforced synthetic plastic material. The depth of the corrugations in the core sheet increases progressively from end to end of the sheet, and the two external sheets are bonded to the peaks of the corrugations. The batten is elongated and the corrugations are transverse to the length of the batten.
Inventors
- 👤 Ian K. Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:07
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/22; B29C53/24; B29C53/28; B29D; B29D24/00; B29D24/002; B32; B32B; B32B3/00; B32B3/26; B32B3/28; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/065; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A flexible tapered sail batten, comprising two external generally flat sheets, and an interposed corrugated core sheet, formed of a fibre reinforced synthetic plastics material, the depth of the corrugations in said core sheet increasing progressively from end to end of said sheet, and the two external sheets being bonded to the peaks of said corrugations, the batten being elongated and the corrugations being transverse to the length of the batten.
Claim 2
Dependent Claim
71 words
A flexible tapered sail batten, comprising two external generally flat sheets, and an interposed corrugated core sheet, formed of a fibre reinforced synthetic plastics material, the depth of the corrugations in said core sheet increasing progressively from end to end of said sheet, and the two external sheets being bonded to the peaks of said corrugations, the batten being elongated and the corrugations being transverse to the length of the batten.
References Cited (Backward Citations)
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FR1562921A
Cited
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Cited
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US4044702A
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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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |