US3742886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catamaran
Assignee: Individual
•
Filing: 1971-08-02
•
Granted: 1973-07-03
•
Expires: 1991-08-02
Abstract
Abstract A pontoon water craft, the pontoons of which are connected together by a parallelogram linkage. The sailor of the craft stands upon the parallelogram linkage carrying a hand sail, and steers the craft with his feet by shifting the linkage. A rudder is affixed to the parallelogram linkage, so that movement of the parallelogram linkage turns the rudder.
Inventors
- 👤 J Dillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:20
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/04; B63B1/042; B63H; B63H8/00; B63H8/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
A water craft comprising: a pair of generally parallel pontoons, a pair of cross bars each pivoted at one of its ends to one pontoon and pivoted at its other end to the other pontoon, said cross bars being spaced forwardly and rearwardly of each other, a pair of stringers the front ends of which are pivoted to said front cross bar and the rear ends of which are pivoted to said rear cross bar, a foot support on each stringer, said foot supports being positioned in side-by-side relationship to support a man standing thereon, and a rudder supported in such manner as to remain generally normal to said cross bars, and whereby said rudder is rotated by moving said stringers forwardly and rearwardly of each other by force transmitted through said foot supports and without rotating the feet in said foot supports.
Claim 2
Dependent Claim
143 words
A water craft comprising: a pair of generally parallel pontoons, a pair of cross bars each pivoted at one of its ends to one pontoon and pivoted at its other end to the other pontoon, said cross bars being spaced forwardly and rearwardly of each other, a pair of stringers the front ends of which are pivoted to said front cross bar and the rear ends of which are pivoted to said rear cross bar, a foot support on each stringer, said foot supports being positioned in side-by-side relationship to support a man standing thereon, and a rudder supported in such manner as to remain generally normal to said cross bars, and whereby said rudder is rotated by moving said stringers forwardly and rearwardly of each other by force transmitted through said foot supports and without rotating the feet in said foot supports.
Claim 3
Dependent Claim
37 words
The water craft of claim 1 including: a body rest constructed and arranged to bear against a body during movement of said stringers forwardly and rearwardly of each other when both feet are on said foot supports.
Claim 4
Dependent Claim
9 words
The water craft of claim 1 including a sail.
Claim 5
Dependent Claim
42 words
The water craft of claim 1 wherein said pontoons comprise a main body portion of a plastic foam, and said pivoted ends of said cross bars comprise a pin on said cross bars received in a tube embedded in said plastic foam.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |