US3094960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil for water craft
Assignee: Individual
•
Filing: 1959-11-19
•
Granted: 1963-06-25
•
Expires: 1979-11-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:19
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A HYDROFOIL CRAFT COMPRISING; A BOAT; MEANS DEFINING A SYMMETRICAL LIFTING SURFACE FIXED TO SAID BOAT AT THE BOW THEREOF; A PAIR OF HYDROFOILS SECURED TO SAID BOAT NEAR THE STERN THEREOF, ONE ON EACH SIDE OF THE BOAT''S CENTER LINE, EACH OF SAID HYDROFOILS COMPRISING A PAIR OF ARMS ARRANGED IN DOWNWARDLY CONVERGING SHAPE IN A VERTICAL PLANE, EACH VERTICAL PLANE EXTENDING OUTWARDLY AND SLIGHTLY REARWARDLY OF SAID BOAT WHEREBY THE INBOARD ARM OF EACH V-SHAPE PRESENTS A HIGHER ANGLE OF ATTACK THAN THE OUTBOARD ARM THEREOF.
Claim 2
Dependent Claim
88 words
A HYDROFOIL CRAFT COMPRISING; A BOAT; MEANS DEFINING A SYMMETRICAL LIFTING SURFACE FIXED TO SAID BOAT AT THE BOW THEREOF; A PAIR OF HYDROFOILS SECURED TO SAID BOAT NEAR THE STERN THEREOF, ONE ON EACH SIDE OF THE BOAT''S CENTER LINE, EACH OF SAID HYDROFOILS COMPRISING A PAIR OF ARMS ARRANGED IN DOWNWARDLY CONVERGING SHAPE IN A VERTICAL PLANE, EACH VERTICAL PLANE EXTENDING OUTWARDLY AND SLIGHTLY REARWARDLY OF SAID BOAT WHEREBY THE INBOARD ARM OF EACH V-SHAPE PRESENTS A HIGHER ANGLE OF ATTACK THAN THE OUTBOARD ARM THEREOF.
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |