US3581698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sail batten
Assignee: Individual
•
Filing: 1968-06-05
•
Granted: 1971-06-01
•
Expires: 1988-06-05
Abstract
Abstract A tough, thin, flexible batten made of layers of strips of material embedded in and bonded together by plastic. The outer layers of the strip may be successively shorter to taper the batten and make it more flexible at one end than the other.
Inventors
- 👤 John U Bete
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:59
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/065; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/31504; Y10T428/31551; Y10T428/31634
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
A sail batten characterized by a varying flexibility at different locations throughout its length comprising an integral substantially void free fiberglass-resin composite structure of incrementally decreasing thickness from one end to the other end of said batten, said composite including at least two outer strips of fiberglass fabric of a length equal to the length of said batten and a plurality of shorter strips of different lengths, each of equal thickness throughout its length, said shorter strips being interposed between the outer strips and extending from the thicker end of said batten and terminating at a series of longitudinally spaced points along the length of the batten, the degree and location of maximum flexure of said batten being determined by the location of said spaced points and the number of said shorter strips which terminate at each of said points.
Claim 2
Dependent Claim
140 words
A sail batten characterized by a varying flexibility at different locations throughout its length comprising an integral substantially void free fiberglass-resin composite structure of incrementally decreasing thickness from one end to the other end of said batten, said composite including at least two outer strips of fiberglass fabric of a length equal to the length of said batten and a plurality of shorter strips of different lengths, each of equal thickness throughout its length, said shorter strips being interposed between the outer strips and extending from the thicker end of said batten and terminating at a series of longitudinally spaced points along the length of the batten, the degree and location of maximum flexure of said batten being determined by the location of said spaced points and the number of said shorter strips which terminate at each of said points.
Claim 3
Dependent Claim
24 words
A sail as set forth in claim 1, in which said fiberglass fabric is woven and wherein said resin is a cured thermosetting resin.
Claim 4
Dependent Claim
20 words
A sail batten as set forth in claim 1, wherein thermoplastic tips are fitted over the ends of the batten.
Claim 5
Dependent Claim
36 words
A sail batten as set forth in claim 1, wherein said fabric is a woven material having a greater number of strands extending longitudinally of the batten than transversely thereof to impart greater longitudinal strength thereto.
References Cited (Backward Citations)
US2597888A
Cited
US2608172A
Cited
US2659958A
Cited
US2971207A
Cited
US3072929A
Cited
US3168068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |