Patent US3578271A successfully refreshed from Google Patents.
US3578271A
Expired / Lapsed
US
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Aircraft arresting device
Assignee: Gulf & Western Ind Prod Co
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Filing: 1969-07-08
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Granted: 1971-05-11
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Expires: 1989-07-08
Abstract
Abstract An aircraft arresting device includes a rotatable reel having a central axis and a hub on which an elongated flat tape is coiled in layer-by-layer convolutions. The hub has a noncircular crosssectional shape and includes a plurality of radially extending projections. A tape coiled upon the hub of the reel is under greater compressive force in the area of the projections so that relative slippage between adjacent convolutions of the tape on the reel is prevented.
Inventors
- 👤 Charles S Thompson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:19
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/02; B64F1/029
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
An aircraft arresting device including a rotatable reel having a central axis and hub means on which an elongated flat tape is coiled in layer-by-layer convolutions, said hub means having a noncircular cross-sectional shape and including a plurality of substantially equiangularly spaced projections extending radially of said axis, said hub means having hub space portions between adjacent ones of said plurality of projections, said hub means having an outer periphery defined by said projections and said hub space portions, said hub space portions defining a substantially greater portion of said outer periphery than said projections, said tape convolutions lying closer to said axis at said hub space portions than at said projections, said tape being under tension on said reel and successive outer layers of said convolutions applying compressive force to inner layers of said convolutions, said compressive force applying a substantially greater pressure per unit area to said tape convolutions at said projections than at said hub space portions.
Claim 2
Dependent Claim
160 words
An aircraft arresting device including a rotatable reel having a central axis and hub means on which an elongated flat tape is coiled in layer-by-layer convolutions, said hub means having a noncircular cross-sectional shape and including a plurality of substantially equiangularly spaced projections extending radially of said axis, said hub means having hub space portions between adjacent ones of said plurality of projections, said hub means having an outer periphery defined by said projections and said hub space portions, said hub space portions defining a substantially greater portion of said outer periphery than said projections, said tape convolutions lying closer to said axis at said hub space portions than at said projections, said tape being under tension on said reel and successive outer layers of said convolutions applying compressive force to inner layers of said convolutions, said compressive force applying a substantially greater pressure per unit area to said tape convolutions at said projections than at said hub space portions.
Claim 3
Dependent Claim
15 words
The device of claim 1 wherein said hub means has a substantially elliptical cross-sectional shape.
Claim 4
Dependent Claim
44 words
The device of claim 1 wherein said compressive force applying a substantially greater pressure per unit area at said projections is substantially proportional to the angular velocity of said reel when said reel rotates and said tape uncoils therefrom during arrestment of an aircraft.
Claim 5
Dependent Claim
50 words
The device of claim 1 wherein said compressive force applying a substantially greater pressure per unit area at said projections is produced by a centrifugal force acting on said tape at said hub space portions which is substantially greater than the centrifugal force acting on said tape at said projections.
Claim 6
Dependent Claim
118 words
A reel for an aircraft arresting device, said reel having a central axis and hub means on which an elongated flat tape is adapted to be coiled in layer-by-layer convolutions, said hub means having a noncircular cross-sectional shape and including a plurality of substantially equiangularly spaced projections extending radially of said axis, said hub means having hub space portions between adjacent ones of said plurality of projections, said hub means having an outer periphery defined by said projections and said hub space portions, said hub space portions defining a substantially greater portion of said outer periphery than said projections, and the periphery of said hub space portions lying closer to said axis than the periphery of said projections.
Claim 7
Dependent Claim
118 words
A reel for an aircraft arresting device, said reel having a central axis and hub means on which an elongated flat tape is adapted to be coiled in layer-by-layer convolutions, said hub means having a noncircular cross-sectional shape and including a plurality of substantially equiangularly spaced projections extending radially of said axis, said hub means having hub space portions between adjacent ones of said plurality of projections, said hub means having an outer periphery defined by said projections and said hub space portions, said hub space portions defining a substantially greater portion of said outer periphery than said projections, and the periphery of said hub space portions lying closer to said axis than the periphery of said projections.
Claim 8
Dependent Claim
15 words
The reel of claim 5 wherein said hub means has a substantially elliptical cross-sectional shape.
Claim 9
Independent Claim
122 words
A method of arresting an aircraft comprising the steps of engaging an aircraft with engagement means connected with the free end of a flat elongated tape extending from a rotatable reel on which the tape is stored in layer-by-layer convolutions, placing the free end of the tape in tension to uncoil the tape from the reel, and preventing relative slippage of adjacent tape layers on the reel during aircraft arrestment by storing said tape on a reel having a hub of noncircular cross-sectional shape to provide a plurality of arcuate portions of the coiled tape with a compressive pressure per unit area substantially greater than the compressive pressure developed per unit area on a reel having a hub of circular cross-sectional shape.
Claim 10
Independent Claim
122 words
A method of arresting an aircraft comprising the steps of engaging an aircraft with engagement means connected with the free end of a flat elongated tape extending from a rotatable reel on which the tape is stored in layer-by-layer convolutions, placing the free end of the tape in tension to uncoil the tape from the reel, and preventing relative slippage of adjacent tape layers on the reel during aircraft arrestment by storing said tape on a reel having a hub of noncircular cross-sectional shape to provide a plurality of arcuate portions of the coiled tape with a compressive pressure per unit area substantially greater than the compressive pressure developed per unit area on a reel having a hub of circular cross-sectional shape.
References Cited (Backward Citations)
FR1384663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |