US3749337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerial sled
Assignee: Individual
•
Filing: 1970-05-27
•
Granted: 1973-07-31
•
Expires: 1990-05-27
Abstract
Abstract An aerial device in the form of a wing having upper and lower flexible layers and a leading edge and a trailing edge, a wall of the wing having an opening facing outward from the bottom or a side of the wing forming an inlet for flow of pressurized air into the wing, and a normally open flexible valve for the opening closeable by the air pressure to seal the opening when pressurized air is admitted to the wing.
Inventors
- 👤 D Jalbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:28
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/02; B64D17/025; B64C; B64C31/00; B64C31/028; B64C31/036
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
An aerial device comprising two separate flexible wings, each wing having upper and lower flexible walls and flexible end walls, said two wings being positioned with two end walls adjacent each other, the upper flexible walls above each end wall being connected by a central web, opening means in the adjacent end walls under said web, said web forming a surface whereby air directed thereagainst is redirected to flow through the openings in the end walls to build up pressure within said wing sections, shroud means connected to the lower flexible walls of each wing.
Claim 2
Dependent Claim
95 words
An aerial device comprising two separate flexible wings, each wing having upper and lower flexible walls and flexible end walls, said two wings being positioned with two end walls adjacent each other, the upper flexible walls above each end wall being connected by a central web, opening means in the adjacent end walls under said web, said web forming a surface whereby air directed thereagainst is redirected to flow through the openings in the end walls to build up pressure within said wing sections, shroud means connected to the lower flexible walls of each wing.
Claim 3
Dependent Claim
33 words
An aerial device as set forth in claim 1 wherein a central connector extends downwardly from the central web between the end walls, said shroud means also being connected to said central connector.
Claim 4
Dependent Claim
51 words
An aerial device as set forth in claim 2 wherein grill means covers each opening means, a flexible valve member is located in each wing for each opening means, each flexible valve member being openable by said flow and closed against its cooperating grill means by air pressure in its wing.
Claim 5
Dependent Claim
51 words
An aerial device as set forth in claim 1 wherein grill means covers each opening means, a flexible valve member is located in each wing for each opening means each flexible valve member being openable by said flow and closed against its cooperating grill means by air pressure in its wing.
References Cited (Backward Citations)
US2759694A
Cited
FR1295993A
Cited
US3428277A
Cited
US3469805A
Cited
US3443779A
Cited
US3524613A
Cited
US3558087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |