Patent US3665532A successfully refreshed from Google Patents.
US3665532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watercraft
Assignee: Individual
•
Filing: 1970-03-27
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Granted: 1972-05-30
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Expires: 1990-03-27
Abstract
Abstract A watercraft for use in a water sport in which the craft is propelled by a passenger paddling with his hands. The watercraft has a generally flat bottom and is symmetrical, such that the passenger may face either end of the watercraft while paddling. Two pairs of stabilizing indentations are formed in the flat bottom, one pair for receiving the passenger''s knees while kneeling and facing one end and the other pair for receiving the passenger''s knees while kneeling and facing the other end. When the watercraft is canoe shaped and has upturned ends, it may be equipped with floatation such that it is difficult to swamp and is self-uprighting when swamped. The floatation includes a pair of elongated floats projecting from and extending along the sides of the canoe above the normal waterline and float means positioned in the upturned ends of the canoe and vertically spaced above the bottom of the canoe.
Inventors
- 👤 Lawrence V Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:07
CPC Classifications
B; B63; B63B; B63B43/00; B63B43/02; B63B43/10; B63B43/14; B63B32/00; B63B32/40; B63B34/00; B63B34/20; B63B34/21
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A watercraft for carrying a passenger and which is propelled by the passenger paddling with his hands, comprising an elongated body having a symmetrical bottom, a first pair of indentations in the upper surface of said bottom, said indentations being positioned toward one end of said bottom and adapted to receive the knees of the passenger when he is kneeling and facing the other end of said bottom, and a second pair of indentations in the upper surface of said bottom, said second indentations being positioned toward said other end of said bottom and adapted to receive the knees of the passenger when he is kneeling and facing said one end of said bottom, whereby the passenger may propel the watercraft while facing either end of the watercraft and kneeling in one of said pairs of indentations for stability.
Claim 2
Dependent Claim
139 words
A watercraft for carrying a passenger and which is propelled by the passenger paddling with his hands, comprising an elongated body having a symmetrical bottom, a first pair of indentations in the upper surface of said bottom, said indentations being positioned toward one end of said bottom and adapted to receive the knees of the passenger when he is kneeling and facing the other end of said bottom, and a second pair of indentations in the upper surface of said bottom, said second indentations being positioned toward said other end of said bottom and adapted to receive the knees of the passenger when he is kneeling and facing said one end of said bottom, whereby the passenger may propel the watercraft while facing either end of the watercraft and kneeling in one of said pairs of indentations for stability.
Claim 3
Dependent Claim
41 words
A watercraft for carrying a passenger and which is propelled by the passenger paddling with his hands, as defined in claim 1, and including means in each of said indentations for padding said indentations to protect the knees of the passenger.
Claim 4
Dependent Claim
35 words
A watercraft for carrying a passenger and which is propelled by the passenger paddling with his hands, as defined in claim 1, wherein each of said indentations projects from the lower surface of said bottom.
Claim 5
Dependent Claim
115 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling with his hands, comprising an elongated canoe body including a bottom, first and second pairs of indentations formed in said bottom, said first indentations being positioned toward one end of said canoe and adapted to receive the knees of the passenger when he is kneeling and facing the other end of said canoe, said second indentations being positioned toward the other end of said canoe and adapted to receive the knees of the passenger when he is kneeling and facing the one end of said canoe, whereby the passenger may face either end of said canoe while propelling said canoe.
Claim 6
Dependent Claim
115 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling with his hands, comprising an elongated canoe body including a bottom, first and second pairs of indentations formed in said bottom, said first indentations being positioned toward one end of said canoe and adapted to receive the knees of the passenger when he is kneeling and facing the other end of said canoe, said second indentations being positioned toward the other end of said canoe and adapted to receive the knees of the passenger when he is kneeling and facing the one end of said canoe, whereby the passenger may face either end of said canoe while propelling said canoe.
Claim 7
Dependent Claim
38 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling with his hands, as defined in claim 4, and including means padding each of said indentations to protect the knees of the passenger.
Claim 8
Dependent Claim
49 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling with his hands, as defined in claim 4, and including a keel formed in and extending along said bottom, said keel being positioned between the two indentations in each of said pairs of indentations.
Claim 9
Dependent Claim
110 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling wiTh his hands, as defined in claim 4, wherein said elongated body includes two elongated sidewalls curved upwardly from said bottom, the portion of the sidewalls adjacent each end of said canoe extending above the portion of the sidewalls at the center of said canoe, two elongated floats, one float projecting from and extending along each sidewall adjacent the waterline of said canoe to stabilize said canoe, and float means positioned in each end of said canoe and vertically spaced above said bottom for cooperating with said two floats to upright said canoe when swamped.
Claim 10
Dependent Claim
54 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling with his hands, as defined in claim 7, wherein float means are positioned between the portions of said sidewalls adjacent each end of said canoe which extends above the portion of said sidewalls at the center of said canoe.
Claim 11
Dependent Claim
35 words
A canoe for carrying a passenger and adapted to be propelled by the passenger paddling with his hands, as defined in claim 7, wherein said float means are vertically spaced above said two elongated floats.
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |