US3611461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single person shell and method
Assignee: Individual
•
Filing: 1969-03-18
•
Granted: 1971-10-12
•
Expires: 1989-03-18
Abstract
Abstract A SLIM, SINGLE PERSON ROWING SHELL MADE WITH SHEET PLASTIC HULL, DECKS AND RIGID MOLDED PLASTIC COCKPIT, SEALED TOGETHER AS A WATER-TIGHT SEMI-HOLLOW BODY. THE HULL AND DECKS ARE VACUUM FORMED AND THE COCKPIT IS EXPANSION CAST. BOUYANT PLASTIC MATERIAL ENCLOSED IN THE BODY RENDERS THE SHELL SUBSTANTIALLY SINK-PROOF. A UNI-PIECE COCKPIT CAN INCLUDE INTEGRAL BRACING WHICH PROVIDES THE REQUISITE OUTRIGGER SUPPORT STRUCTURE FOR OARS AND AUXILIARY PONTOONS. VARIOUS STRUCTURES ARE CONTEMPLATED AS ALTERNATE OUTRIGGER SUPPORTS, SOME BEING MADE FROM INTEGRAL PLASTIC PARTS OF THE COCKPIT STRUCTURE OR METAL TUBING SECURED AS TRUSS STRUCTURE TO THE COCKPIT RIM.
Inventors
- 👤 William D Wurzberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:27
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |