US4401716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam strip wound up into a roll, preferably for sealing purposes
Assignee: Irbit Holding AG
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Filing: 1982-08-20
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Granted: 1983-08-30
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Expires: 2002-08-20
Abstract
Abstract A strip of impregnated and compressed foam material with delayed restoration which is rolled up into a roll, preferably for purposes of sealing, and particularly for improved sealing, the broad side of the roll is provided with a liquid-impermeable layer which adheres to the flank sides of the strip and which is expandable corresponding to the amount of restoration and has a spiral-shaped separation line corresponding to the winding joint of the s
Inventors
- 👤 Rolf Tschudin-Mahrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:55
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6812; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C11/106; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249983; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
91 words
A strip of impregnated and compressed foam material with delayed restorability, wound up into a roll, forming a strip winding joint, wherein said strip has side flanks and said roll defines broad sides comprising said side flanks, respectively, of the strip, a liquid-impervious layer at one of said broad sides of said roll adheres to a corresponding of said side flanks of the strip, said layer being expandable corresponding to the amount of restoration of the strip, said layer being tearable along a spiral-shaped line corresponding to said strip winding joint.
Claim 2
Dependent Claim
91 words
A strip of impregnated and compressed foam material with delayed restorability, wound up into a roll, forming a strip winding joint, wherein said strip has side flanks and said roll defines broad sides comprising said side flanks, respectively, of the strip, a liquid-impervious layer at one of said broad sides of said roll adheres to a corresponding of said side flanks of the strip, said layer being expandable corresponding to the amount of restoration of the strip, said layer being tearable along a spiral-shaped line corresponding to said strip winding joint.
Claim 3
Dependent Claim
15 words
The strip as set forth in claim 1, wherein said strip is impregnated with chloroparaffin.
Claim 4
Dependent Claim
14 words
The strip as set forth in claim 1, wherein said layer is a foil.
Claim 5
Dependent Claim
14 words
The strip as set forth in claim 1, wherein said layer is a skin.
Claim 6
Dependent Claim
14 words
The strip as set forth in claim 1, wherein said layer is a film.
Claim 7
Dependent Claim
15 words
The strip as set forth in claim 3, wherein said layer is a thermosplastic foil.
Claim 8
Dependent Claim
32 words
The strip as set forth in claim 1, wherein said layer is of greater brittleness along said spiral-shaped line corresponding to said strip winding joint than at other regions of said layer.
Claim 9
Dependent Claim
39 words
The strip as set forth in claim 1, wherein said layer has a zone of intended breakage along said spiral-shaped line corresponding to said strip winding joint, said zone having decreased thickness relative to other regions of said layer.
Claim 10
Dependent Claim
32 words
The strip as set forth in claim 1, wherein said strip in the wound up condition has a height approximately one fourth to one third of its height in an unwound condition.
Claim 11
Dependent Claim
26 words
The strip as set forth in claim 1, wherein said strip has a bottom and further comprising a self-adhesive layer at said bottom of said strip.
Claim 12
Dependent Claim
19 words
The strip as set forth in claim 10, further comprising a protective strip is disposed on said self-adhesive layer.
Claim 13
Dependent Claim
27 words
The strip as set forth in claim 11, wherein said protective strip is a paper strip with a layer means for facilitating separation from said self-adhesive layer.
Claim 14
Dependent Claim
16 words
The strip as set forth in claim 12, wherein said layer means is a wax layer.
Claim 15
Dependent Claim
16 words
The strip as set forth in claim 12, wherein said layer means is a wax-like layer.
Claim 16
Dependent Claim
37 words
The strip as set forth in claim 1, wherein said liquid-impervious layer at said one broad side is disposed only at said one broad side of said roll, the strip at said other broad side being uncovered.
References Cited (Backward Citations)
US3406087A
Cited
US4181711A
Cited
US4079170A
Cited
US4369978A
Cited
US4320611A
Cited
US4356676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |