Patent US1946894A successfully refreshed from Google Patents.
US3589183A
Expired / Lapsed
US
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Airdropped portable windsock
Assignee: Individual
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Filing: 1969-07-16
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Granted: 1971-06-29
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Expires: 1989-07-16
Abstract
Abstract A pointed shaft having a shell and fins slidably mounted about it and supported by a peg at its upper end for guiding the shaft to the ground after being dropped from a plane and for exposing and actuating a spring-loaded windsock.
Inventors
- 👤 Kenneth Ledford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:20
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/02; B; B64; B64F; B64F1/00; B64F1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
283 words
An airdropped portable windsock, comprising: a shaft sharpened to a point at the bottom thereof and having an aperture therein near the top thereof; a cylindrical shell slidably mounted over the upper end of said shaft; a plurality of vertical fins secured to and equally spaced about the circumference of said shell for guiding said shaft perpendicular to the ground when dropped from a plane; a swivel at the top of said shaft; a ring pivotally mounted on said swivel for rotation about the axis of said shaft; a windsock attached to said ring at the open end thereof; a spring mounted perpendicular to said ring, said spring being covered by said windsock and partially supporting and extending outwardly said windsock, and said spring being bendable to a direction parallel with said ring; a vertical dish formed at the top of said shell extending above said shaft, said dish being open at the top thereof and having sides extending perpendicular therefrom partially enclosing said ring and said windsock, and said spring being forcibly pressed by said dish into a bent position parallel with said ring; a peg with a length greater than the diameter of said shaft inserted in the aperture of said shaft for supporting said shell as said shaft falls through the air after being dropped from a plane and for allowing said shell to slide down said shaft upon impact as the sharpened point of said shaft sticks into the ground causing said peg to sever under the weight of said shell exposing said ring with said windsock attached thereto and said spring which bends back to a direction perpendicular to said ring allowing wind to blow into said windsock.
Claim 2
Dependent Claim
283 words
An airdropped portable windsock, comprising: a shaft sharpened to a point at the bottom thereof and having an aperture therein near the top thereof; a cylindrical shell slidably mounted over the upper end of said shaft; a plurality of vertical fins secured to and equally spaced about the circumference of said shell for guiding said shaft perpendicular to the ground when dropped from a plane; a swivel at the top of said shaft; a ring pivotally mounted on said swivel for rotation about the axis of said shaft; a windsock attached to said ring at the open end thereof; a spring mounted perpendicular to said ring, said spring being covered by said windsock and partially supporting and extending outwardly said windsock, and said spring being bendable to a direction parallel with said ring; a vertical dish formed at the top of said shell extending above said shaft, said dish being open at the top thereof and having sides extending perpendicular therefrom partially enclosing said ring and said windsock, and said spring being forcibly pressed by said dish into a bent position parallel with said ring; a peg with a length greater than the diameter of said shaft inserted in the aperture of said shaft for supporting said shell as said shaft falls through the air after being dropped from a plane and for allowing said shell to slide down said shaft upon impact as the sharpened point of said shaft sticks into the ground causing said peg to sever under the weight of said shell exposing said ring with said windsock attached thereto and said spring which bends back to a direction perpendicular to said ring allowing wind to blow into said windsock.
References Cited (Backward Citations)
US2045521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |