US3558087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parachute
Assignee: BARISH ASS Inc
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Filing: 1969-05-22
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Granted: 1971-01-26
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Expires: 1989-05-22
Abstract
Abstract A flexible clothlike airfoil-shaped parachute capable of glide and soar which has a canopy made of a clothlike material which is limp and non-self-supporting in the uninflated (not in flight) condition, which parachute canopy has a leading edge and a trailing edge and suspension lines depending from said canopy sufficient to support a load. The leading edge of the canopy is of a clothlike material, arcuate in cross section and may be made up of a portion of the canopy which is folded back and affixed to the remaining canopy to form a three-dimensional, generally airfoil shape, or a section thereof. This airfoil shape has apertures in the arcuate leading edge thereof which permit air to enter into the space formed between the folded and affixed flap, the leading edge and the remainder of the canopy while such canopy is in flight.
Inventors
- 👤 David T Barish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/40; B64D17/52
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
183 words
A flexible airfoil glidewing parachute made up of clothlike material, foldable into compact form when not in use, and deployable when airborne into a glidewing shape, comprising at least one module, which module comprises a clothlike canopy and a multiplicity of suspension lines depending therefrom , said canopy having a leading edge, a trailing edge, and lateral sides wherein said leading edge is the forwardmost portion of said parachute; wherein said leading edge is clothlike and contiguous with said canopy and is a member which is folded back from the forward portion of said canopy toward said trailing edge and is secured to said canopy whereby to define a hollow space between said canopy, said leading edge, and said clothlike folded-back member; wherein at least said leading edge has opening means therein to permit atmospheric air to pass through at least part thereof into said space during free flight thereby, inflating said space into an airfoil like shape and causing said leading edge to inflate into an arcuate cross section along at least a portion of the length thereof during such free flight.
Claim 2
Dependent Claim
183 words
A flexible airfoil glidewing parachute made up of clothlike material, foldable into compact form when not in use, and deployable when airborne into a glidewing shape, comprising at least one module, which module comprises a clothlike canopy and a multiplicity of suspension lines depending therefrom , said canopy having a leading edge, a trailing edge, and lateral sides wherein said leading edge is the forwardmost portion of said parachute; wherein said leading edge is clothlike and contiguous with said canopy and is a member which is folded back from the forward portion of said canopy toward said trailing edge and is secured to said canopy whereby to define a hollow space between said canopy, said leading edge, and said clothlike folded-back member; wherein at least said leading edge has opening means therein to permit atmospheric air to pass through at least part thereof into said space during free flight thereby, inflating said space into an airfoil like shape and causing said leading edge to inflate into an arcuate cross section along at least a portion of the length thereof during such free flight.
Claim 3
Dependent Claim
16 words
A glidewing as claimed in claim l wherein said opening means comprises at least one aperture.
Claim 4
Dependent Claim
18 words
A glidewing as claimed in claim 2 having a multiplicity of apertures in thE arcuate leading edge thereof.
Claim 5
Dependent Claim
42 words
A flexible glidewing parachute as claimed in claim 2 wherein said aperture has a one-way valve on the inside thereof permitting air to penetrate through said leading edge to behind such edge but inhibiting air from escaping from behind said leading edge.
Claim 6
Dependent Claim
40 words
A flexible glidewing parachute as claimed in claim 4 wherein said one-way valve means comprises a clothlike strip across said aperture and clothlike flap means hingedly attached to said strip, which flap means is of larger area than said aperture.
Claim 7
Dependent Claim
34 words
A flexible glidewing parachute as claimed in claim 4 wherein said one-way valve means comprises a clothlike strip across said aperture and two clothlike strips, each hingedly attached to opposite sides of said strip.
Claim 8
Dependent Claim
49 words
A glidewing as claimed in claim 2 including a clothlike flap in said space hingedly attached to the sidewall about a portion of said aperture adapted to permit atmospheric air to enter into said space but substantially preventing air from escaping from said space to the atmosphere during flight.
Claim 9
Dependent Claim
31 words
A flexible glidewing parachute as claimed in claim 2 wherein said folded-back portion has a one-way valved aperture therein adjacent the place where said folded-back portion is joined to said canopy.
Claim 10
Dependent Claim
16 words
A glidewing as claimed in claim 1 including at least one shape-retaining member in said space.
Claim 11
Dependent Claim
20 words
A glidewing as claimed in claim 9 wherein said folded-back member is secured to said canopy through said shape-retaining member.
Claim 12
Dependent Claim
139 words
A glidewing as claimed in claim 9 wherein said folded-back member has a forwardly directed flap extending from the aftmost portion thereof directed into said space, and wherein said folded-back member is secured to said canopy through said shape-retaining member at least at said aftmost portion thereof. l2. A glidewing as claimed in claim l wherein said folded-back member is directly secured to said canopy aft of said leading edge. l3. A glide wing as claimed in claim l wherein a said folded-back member has a forwardly directed flap extending from the aftmost portion thereof directed into said space, and wherein said folded-back member is secured to said canopy at spaced points along said aftmost portion thereof. l4. A glidewing as claimed in claim l3 having apertures between said points where said folded-back member is secured to said canopy.
Claim 13
Dependent Claim
18 words
A glidewing as claimed in claim l comprising a multiplicity of modules joined together along corresponding chords thereof.
Claim 14
Dependent Claim
16 words
A glidewing as claimed in claim l wherein said module is substantially three-sided in plan shape.
Claim 15
Dependent Claim
23 words
A glidewing as claimed in claim l wherein said canopy, leading edge, and folded-back member are all a single sheet of clothlike material.
Claim 16
Dependent Claim
20 words
A glidewing as claimed in claim l wherein said suspension lines are at least partially dependent from said lateral sides.
Claim 17
Dependent Claim
16 words
A glidewing as claimed in claim l wherein said folded-back member extends to said trailing edge.
Claim 18
Dependent Claim
30 words
A glidewing as claimed in claim l wherein said folded-back member extends aft about 30 to 70 percent of the total distance from said leading edge to said trailing edge.
Claim 19
Dependent Claim
31 words
A flexible glidewing parachute as claimed in claim l wherein said arcuate leading edge extends substantially along the whole of the length of the leading edge of one of said modules.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |