Compass device for sailing
Abstract
Abstract A compass device for use in sailing, which has a compass frame mountable in the sailcraft and comprising a compass card box provided with a main steering index and, outside this box external indexes which are called tack indexes. The invention is particularly characterized by the features that the compass card carries a tacking index and that said tack indexes are turnable about the center of the card box to make the central angle enclosed by them to be consistent with the vessel''s angle of ascent, and that said tack indexes may be set so that the tacking index on the card becomes centered in the angle between them. Further, optional, characteristic features concern the provision on the card box of further, so-called scud indexes and their location, certain preferable arrangements for securing the positions of various indexes, and the coloring and other details of design of the indexes.
Inventors
- 👤 R Honkaranta
- 👤 K Jarvenpaa
- 👤 K Shephard
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |