US3596856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asterisk configured drogue parachute
Assignee: United States Department of the Navy
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Filing: 1969-12-15
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Granted: 1971-08-03
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Expires: 1989-12-15
Abstract
Abstract A drogue parachute fabricated of elongated panels in a crisscross arrangement forming an asterisk construction, the canopy being provided with wedge-shaped sectors attached at the confluence point of adjacent panels so that the parachute will exhibit increased drag forces at low speed and decreased drag forces at higher speeds hen compared with existing parachute stabilization systems presently in use.
Inventors
- 👤 Gene R Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:03
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/02; B64D17/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
In a parachute fabricated of a plurality of panel-shaped gores arranged crisscrossed and secured medially, said gores having free ends extending radially to form an asterisk configuration, the improvement residing in: a plurality of sections secured to adjacent panels at their confluence point, said sections being of a predetermined shorter length than the gores, whereby the effective drag area of the parachute in a squidded condition is substantially increased without significantly increasing the drag area of the parachute when in a full open condition.
Claim 2
Dependent Claim
84 words
In a parachute fabricated of a plurality of panel-shaped gores arranged crisscrossed and secured medially, said gores having free ends extending radially to form an asterisk configuration, the improvement residing in: a plurality of sections secured to adjacent panels at their confluence point, said sections being of a predetermined shorter length than the gores, whereby the effective drag area of the parachute in a squidded condition is substantially increased without significantly increasing the drag area of the parachute when in a full open condition.
Claim 3
Dependent Claim
10 words
The improvement of claim 1 wherein said sections are wedged-shaped.
Claim 4
Dependent Claim
13 words
The improvement of claim 2 wherein said sections are formed as a sector.
Claim 5
Dependent Claim
28 words
The improvement of claim 3 wherein the radius of said sectors taken from the center of the parachute are a function of the width of the gore panels.
Claim 6
Dependent Claim
23 words
The improvement of claim 4 wherein the radius of said sectors are approximately in the order of twice the width of the panels.
Claim 7
Dependent Claim
13 words
The improvement of claim 5 wherein said parachute is composed of eight gores.
Claim 8
Dependent Claim
81 words
A drogue parachute comprising: a canopy comprising a plurality of spaced rectangular panel portions extending radially outward to form an asterisk configuration; said canopy having wedge-shaped portions formed at the cOnfluence of the panel portions; the radius of said wedge portions being a function of the width of the panel portions whereby the effective drag area of the parachute in a squidded condition is substantially increased without significantly increasing the drag area of the parachute when in a fully opened condition.
Claim 9
Dependent Claim
81 words
A drogue parachute comprising: a canopy comprising a plurality of spaced rectangular panel portions extending radially outward to form an asterisk configuration; said canopy having wedge-shaped portions formed at the cOnfluence of the panel portions; the radius of said wedge portions being a function of the width of the panel portions whereby the effective drag area of the parachute in a squidded condition is substantially increased without significantly increasing the drag area of the parachute when in a fully opened condition.
Claim 10
Dependent Claim
24 words
The drogue parachute of claim 7 wherein the radius of said sectors are approximately in the order of twice the width of the panels.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |