US3933360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski
Assignee: Individual
•
Filing: 1975-01-02
•
Granted: 1976-01-20
•
Expires: 1995-01-02
Abstract
Abstract A ski including at least a body and a top bend portion extending from one end of said body, said top bend portion being provided with a plurality of air holes passing through said top bend portion from the front to the back surface thereof and allowing air flow to pass therethrough in gliding of said ski.
Inventors
- 👤 Fusaji Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:24
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/04; A63C5/052
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
57 words
A ski including at least a body and a top bend portion extending from one end of said body, said top bend portion being provided with a plurality of air holes passing through said top bend portion from the front to the back surface thereof and allowing air flow to pass therethrough in gliding of said ski.
Claim 2
Dependent Claim
57 words
A ski including at least a body and a top bend portion extending from one end of said body, said top bend portion being provided with a plurality of air holes passing through said top bend portion from the front to the back surface thereof and allowing air flow to pass therethrough in gliding of said ski.
Claim 3
Dependent Claim
28 words
A ski as claimed in claim 1, in which each of said air holes extends substantially in parallel with the longitudinal axis of said body of said ski.
Claim 4
Dependent Claim
37 words
A ski as claimed in claim 1, in which each of said air holes has an enlarged entrance adjacent to the front surface of said top bend portion, whereby air flow can effectively pass through said hole.
Claim 5
Dependent Claim
17 words
A ski as claimed in claim 1, in which each of said air holes has circular section.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |