US3664069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic shell structures constructed from synthetic resin films
Assignee: Toray Industries Inc
•
Filing: 1969-07-18
•
Granted: 1972-05-23
•
Expires: 1989-07-18
Abstract
Abstract Disclosed herein is a pneumatic shell structure which is constructed from two sheet layers, each composed of a plurality of long rectangular synthetic resin films which are arranged side by side in a manner that longitudinal side edge portions of the films are mutually superimposed. The sheet layers are hermetically sealed about their edges to a support frame, so that the arranged films can uniformly carry the stress created on the sheet layers owing to the inner pressure of the airtight air chamber.
Inventors
- 👤 Masaru Ikai
- 👤 Toshikazu Ishii
- 👤 Michiaki Higashikuzc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:48
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H2015/202; E04H2015/203; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/231
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
32 words
A pneumatic shell structure as set forth in claim 1, further comprising means for hermetically sealing said connection between said support means and said peripheries of said first and second sheet means.
Claim 2
Dependent Claim
24 words
A pneumatic shell structure as set forth in claim 1, in which said first strips of synthetic film are made of polyethylene terephthalate resin.
Claim 3
Dependent Claim
58 words
A pneumatic shell structure as set forth in claim 1, in which said outer layer of each said sheet means comprises a plurality of second strips of synthetic resin film having longitudinal and transverse extents defining major surfaces thereof, said second strips being arranged in a configuration which is the same as said configuration of said first strips.
Claim 4
Dependent Claim
24 words
A pneumatic shell structure as set forth in claim 4, in which said second strips of synthetic film are made of polyethylene terephthalate resin.
Claim 5
Dependent Claim
25 words
A pneumatic shell structure as set forth in claim 5, in which said overlapping marginal surface portions of said second strips are hermetically sealed together.
Claim 6
Dependent Claim
74 words
A pneumatic shell structure as set forth in claim 1, in which said inner layer of each said sheet means comprises a plurality of third strips of synthetic resin film having longitudinal and transverse extents defining major surfaces thereof, said third strips being arranged in a configuration which is the same as said configuration of said first strips, and in which said overlapping marginal surface portions of said third strips are hermetically sealed together.
Claim 7
Dependent Claim
24 words
A pneumatic shell structure as set forth in claim 7, in which said third strips of synthetic film are made of polyethylene terephthalate resin.
Claim 8
Dependent Claim
50 words
A pneumatic shell as set forth in claim 1, further comprising reinforcing means including a synthetic resin film received within said airtight chamber and connected to said first sheet means, said film extending toward said second sheet means in a substantially perpendicular relationship with said first and second sheet means.
Claim 9
Dependent Claim
63 words
A pneumatic shell structure as set forth in claim 1, in which said support means is coated with a paint membrane having a pencil hardness of at least F degree and a Sward Rucker''s hardness value of at least 25, and further comprising means for hermetically sealing said connection between said support means and said peripheries of said first and second sheet means.
Claim 10
Dependent Claim
32 words
A pneumatic shell structure as set forth in claim 1, in which said shell structure has a corner portion and further comprising a corner sealing member hemetically sealed to said corner portion.
Claim 11
Dependent Claim
29 words
A pneumatic shell structure as set forth in claim 1, in which said first sheet means includes at least one film layer containing an ultraviolet ray absorbing agent means.
Claim 12
Dependent Claim
46 words
A pneumatic shell structure as set forth in claim 12, in which said film layer is a synthetic resin film of polyethylene terephthalate, and in which said absorbing agent means is for absorption of ultraviolet rays having wave lengths of at most 350 m Mu .
Claim 13
Dependent Claim
20 words
A pneumatic shell structure as set forth in claim 1, further comprising a sputtered metal coating on said outer layer.
Claim 14
Dependent Claim
21 words
A pneumatic shell structure as set forth in claim 14, further comprising an ultraviolet absorption coating on said sputtered metal coating.
Claim 15
Dependent Claim
20 words
A pneumatic shell structure as set forth in claim 14, in which said outer layer is a polyethylene terephthalate film.
Claim 16
Dependent Claim
38 words
A pneumatic shell structure as set forth in claim 1, further comprising ventilating means disposed within at least one of said first and second sheet means for venting air contained within said one sheet means to the atmosphere.
Claim 17
Dependent Claim
80 words
A pneumatic shell structure as set forth in claim 17, in which said outer layer of each said sheet means comprises a plurality of second strips of synthetic resin film having longitudinal and transverse extents defining major surfaces thereof, said second strips being arranged in a configuration which is the same as said configuration of said first strips, and in which said ventilating means comprises a pipe inserted between said overlapping marginal surface portions of two of said second strips.
Claim 18
Dependent Claim
33 words
A pneumatic shell structure as set forth in claim 17, in which said ventilating means comprises a pipe inserted between said outer and intermediate layers at said periphery of said one sheet means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |