US3556457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holddown anchor for airplanes and other structures
Assignee: Individual
•
Filing: 1968-12-24
•
Granted: 1971-01-19
•
Expires: 1988-12-24
Abstract
Abstract A plurality of anchor units are employed attached to guide lines secured to an airplane or other structure. Each holddown unit includes a base imbedded in concrete and a holddown device having a lower shank insertable into and adapted to be locked to the base and having an inverted frustoconical upper end provided therein with a hook integral with the holddown device and around which holddown lines are adapted to extend.
Inventors
- 👤 Henry A Patnaude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:53
CPC Classifications
F; F16; F16B; F16B45/00; F16B45/02; F16B45/023; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3916
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A holddown unit comprising: an open-topped frustoconical head; a hook wholly within said head integral therewith and having an upper surface flush with the top of said head; a plate partially covering the top of said head and flush with the top surface thereof, said plate being cut away at one side for the passage of a cable element downwardly around said hook; said plate being pivoted at the side of said head opposite said hook to swing upwardly therefrom; said plate having its portion adjacent said hook in close proximity thereto; said hook being cut away adjacent the end thereof, and said plate adjacent said hook overlying said cutaway in contact with said hook.
Claim 2
Dependent Claim
115 words
A holddown unit comprising: an open-topped frustoconical head; a hook wholly within said head integral therewith and having an upper surface flush with the top of said head; a plate partially covering the top of said head and flush with the top surface thereof, said plate being cut away at one side for the passage of a cable element downwardly around said hook; said plate being pivoted at the side of said head opposite said hook to swing upwardly therefrom; said plate having its portion adjacent said hook in close proximity thereto; said hook being cut away adjacent the end thereof, and said plate adjacent said hook overlying said cutaway in contact with said hook.
Claim 3
Dependent Claim
21 words
A device according to claim 1 provided with a fastening element securing said overlying portion of said plate to said hook.
Claim 4
Dependent Claim
112 words
A holddown unit comprising an open-topped frustoconical head; a hook wholly within said head integral therewith and having an upper surface flush with the top of said head; a plate partially covering the top of said head and flush with the top surface thereof; said plate being cut away at one side for the passage of a cable element downwardly around said hook; said plate being removably mounted at the side of said head opposite said hook; said plate having its portion adjacent said hook in close proximity thereto; said hook being cut away adjacent the end thereof; and said plate adjacent said hook overlying said cutaway in contact with said hook.
Claim 5
Dependent Claim
112 words
A holddown unit comprising an open-topped frustoconical head; a hook wholly within said head integral therewith and having an upper surface flush with the top of said head; a plate partially covering the top of said head and flush with the top surface thereof; said plate being cut away at one side for the passage of a cable element downwardly around said hook; said plate being removably mounted at the side of said head opposite said hook; said plate having its portion adjacent said hook in close proximity thereto; said hook being cut away adjacent the end thereof; and said plate adjacent said hook overlying said cutaway in contact with said hook.
Claim 6
Dependent Claim
21 words
A device according to claim 3 provided with a fastening element securing said overlying portion of said plate to said hook.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |