Patent US3561518A successfully refreshed from Google Patents.
US3561518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible wall having through accessibility
Assignee: MUTRON CORP
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Filing: 1969-03-24
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Granted: 1971-02-09
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Expires: 1989-03-24
Abstract
Abstract A wall structure comprising a pair of overlapping flexible sheets and three transversely spaced elastic bands, one being secured to each of the sheets adjacent the longitudinal edge thereof that overlies the other of the sheets and the third being secured to one of the sheets.
Inventors
- 👤 Harold A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:51
CPC Classifications
E; E04; E04H; E04H1/00; E04H1/12; E04B; E04B2/00; E04B2/74; E04B2/7407; E04H3/00; E04H3/08; E04B2002/7498
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
95 words
A wall structure comprising: a pair of overlapping flexible sheets; and, three longitudinally extending elastic bands; one of said sheets having a longitudinally extending edge portion secured along its length to a first one of said bands; the other of said sheets having a longitudinally extending edge portion overlying said one sheet and secured along its length to a second one of said bands; said second band being transversely spaced from said first band; and the third one of said bands being transversely spaced from said first band and being secured to said one sheet.
Claim 2
Dependent Claim
95 words
A wall structure comprising: a pair of overlapping flexible sheets; and, three longitudinally extending elastic bands; one of said sheets having a longitudinally extending edge portion secured along its length to a first one of said bands; the other of said sheets having a longitudinally extending edge portion overlying said one sheet and secured along its length to a second one of said bands; said second band being transversely spaced from said first band; and the third one of said bands being transversely spaced from said first band and being secured to said one sheet.
Claim 3
Dependent Claim
34 words
The wall structure of claim 1 wherein the portion of said one sheet intermediate said first band and said third band is of a lighter gauge than is another portion of said one sheet.
Claim 4
Dependent Claim
23 words
The wall structure of claim 1 wherein a pair of longitudinally extending transversely spaced elastic bands are secured to each of said sheets.
Claim 5
Dependent Claim
35 words
The wall structure of claim 3 wherein for each of said sheets, the portion of said each sheet intermediate the bands secured thereto is of lesser gauge than is a remaining portion of said sheet.
Claim 6
Dependent Claim
32 words
The wall structure of claim 1 including a pair of longitudinally spaced supports and wherein a transversely extending edge portion of each of said sheets is secured to each of said supports.
Claim 7
Dependent Claim
21 words
The wall structure of claim 5 wherein an end of each of said bands is secured to one of said supports.
Claim 8
Dependent Claim
27 words
The wall structure of claim 5 wherein the length of said longitudinal edge portion of each of said sheets is greater than the distance between said support.
Claim 9
Dependent Claim
26 words
The wall structure of claim 7 wherein a second longitudinally extending edge portion of one of said sheets is substantially equal in length to said distance.
Claim 10
Dependent Claim
25 words
The wall structure of claim 1 wherein said third elastic band is secured to Said one sheet adjacent a second longitudinally extending edge portion thereof.
Claim 11
Dependent Claim
39 words
The wall structure of claim 9 including a pair of transversely spaced supports and wherein said sheets extend between said supports and the length of each of said longitudinal edge portions is greater than the distance between said supports.
Claim 12
Dependent Claim
26 words
The wall structure of claim 9 including a fourth longitudinally extending elastic band intermediate said first and said third bands and secured to said one sheet.
Claim 13
Dependent Claim
25 words
The wall structure of claim 11 including a fifth longitudinally extending elastic band transversely spaced from said second band and secured to said other sheet.
Claim 14
Dependent Claim
60 words
The wall structure of claim 12 wherein the portion of said one sheet intermediate said one band and said third band is of lesser gauge than is another portion of said one sheet, the portion of said other sheet intermediate said fifth band and said second band is of lesser gauge than is a remaining portion of said other sheet.
Claim 15
Dependent Claim
65 words
The wall structure of claim 13 including a pair of longitudinally spaced supports and wherein a transversely extending edge portion of each of said sheets is secured to each of said supports, transversely extending edge portions of overlapping portions of said sheets are secured to each other, and the length of each of said longitudinal edge portions is greater than the distance between said supports.
Claim 16
Dependent Claim
22 words
The wall structure of claim 1 wherein transversely extending edge portions of overlapping portions of said sheets are secured to each other.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |