Patent US2670176A successfully refreshed from Google Patents.
Patent US4767655A successfully refreshed from Google Patents.
US4767655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing strip
Assignee: Irbit Research and Consulting AG
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Filing: 1986-12-12
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Granted: 1988-08-30
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Expires: 2006-12-12
Abstract
Abstract The invention concerns a joint sealing strip (D) consisting of open-cell precompressed foam material with which strip there is coordinated a foil (4) joining in the restoring of the foam material, and the invention suggests, specifically for optimizing the laying of the strip in a sealing manner, that the foil (4) be fashioned as an intermediate layer which is areally bonded to the foam material layers (1), between these layers.
Inventors
- 👤 Rolf Tschudin-Mahrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:43
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/23; Y10T428/233; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249982; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A joint between two spaced walls, said joint comprising a sealing strip disposed between said walls, said sealing strip being formed of open-cell, compressed foam material with retarded restoring capability, said sealing strip comprising two layers of said foam material, an intermediate layer of stretchable foil, said intermediate layer having corrugations extending transversely to the restoring direction of said foam layers, said foil being bonded to at least one of said foam layers, the length of said corrugated foil when expanded in the restoring direction of said foam layers corresponding to the outer dimension of said maximally restored sealing strip, the ends of said foil engaging said joint walls and being adhesively secured thereto.
Claim 2
Dependent Claim
114 words
A joint between two spaced walls, said joint comprising a sealing strip disposed between said walls, said sealing strip being formed of open-cell, compressed foam material with retarded restoring capability, said sealing strip comprising two layers of said foam material, an intermediate layer of stretchable foil, said intermediate layer having corrugations extending transversely to the restoring direction of said foam layers, said foil being bonded to at least one of said foam layers, the length of said corrugated foil when expanded in the restoring direction of said foam layers corresponding to the outer dimension of said maximally restored sealing strip, the ends of said foil engaging said joint walls and being adhesively secured thereto.
Claim 3
Dependent Claim
87 words
A sealing strip of open-cell compressed foam material with retarded restoring capability for use in sealing joints, said sealing strip comprising two layers of said foam material, an intermediate layer of stretchable foil, said intermediate layer having corrugations extending transversely to the restoring direction of said foam layers, said foil being bonded to at least one of said foam layers, the length of said corrugated foil when expanded in the restoring direction of said foam layers corresponding to the outer dimension of said maximally restored sealing strip.
Claim 4
Dependent Claim
87 words
A sealing strip of open-cell compressed foam material with retarded restoring capability for use in sealing joints, said sealing strip comprising two layers of said foam material, an intermediate layer of stretchable foil, said intermediate layer having corrugations extending transversely to the restoring direction of said foam layers, said foil being bonded to at least one of said foam layers, the length of said corrugated foil when expanded in the restoring direction of said foam layers corresponding to the outer dimension of said maximally restored sealing strip.
Claim 5
Dependent Claim
40 words
The sealing strip of claim 2 in which the ends of said foil are T-shaped and include shanks which overlap the edges of said layers of foam material on the sides of said strip adapted to abut the joint walls.
Claim 6
Dependent Claim
19 words
The sealing strip of claim 2 in which said foil forms a sleeve enveloping a layer of foam material.
Claim 7
Dependent Claim
20 words
The sealing strip of claim 2 in which said intermediate foil is adhesively bonded to both layers of foam material.
Claim 8
Dependent Claim
22 words
The sealing strip of claim 2 in which the corrugated shape of the intermediate foil is formed by pre-compressing said foam material.
Claim 9
Dependent Claim
20 words
The sealing strip of claim 5 in which both sides of said intermediate foil are coated with a self-adhesive layer.
Claim 10
Dependent Claim
21 words
The sealing strip of claim 2 in which said foil comprises a skin which is integrally formed on said foam material.
References Cited (Backward Citations)
DE937354C
Cited
DE1569052A1
Cited
FR2309768A1
Cited
EP0059062A1
Cited
US4401716A
Cited
US4621731A
Cited
US4564550A
Cited
US4666768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |