Patent US4796402A successfully refreshed from Google Patents.
US4796402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step silencing parquet floor
Assignee: PALOHEIMO A CORP OF FINLAND Oy
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Filing: 1987-03-30
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Granted: 1989-01-10
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Expires: 2007-03-30
Abstract
Abstract A step silencing board parquet, in which the sound of steps which are perceivable from one room to another is silenced by using a surface-pressed, non-homogeneous fibre board in the supporting construction layers (2 and/or 3) provided underneath the wear surface layer (1) of the board parquet.
Inventors
- 👤 Jari Pajala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:59
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/18; E04F15/181; E04F15/20; E04F15/206; E04F2290/00; E04F2290/04; E04F2290/041; E04F2290/043
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A laminated flooring board for a parquet flooring comprising a wear resistant surface layer on top of the board and a parallel supporting construction layer bonded to the bottom side of said surface layer, said board having longitudinal sides and ends formed with a tongue and groove whereby said board will cooperate with adjacent boards to form a self-silencing parquet floor, said flooring board being characterized in that said supporting construction layer consists of a non-homogeneous fiber board wherein said non-homogeneity is provided by surface compactness of the fiber board.
Claim 2
Dependent Claim
90 words
A laminated flooring board for a parquet flooring comprising a wear resistant surface layer on top of the board and a parallel supporting construction layer bonded to the bottom side of said surface layer, said board having longitudinal sides and ends formed with a tongue and groove whereby said board will cooperate with adjacent boards to form a self-silencing parquet floor, said flooring board being characterized in that said supporting construction layer consists of a non-homogeneous fiber board wherein said non-homogeneity is provided by surface compactness of the fiber board.
Claim 3
Dependent Claim
21 words
A laminated flooring board according to claim 1 characterized in that said supporting construction layer has an interior which is porous.
Claim 4
Dependent Claim
60 words
A laminated flooring board according to claims 1 or 2 further characterized in that said supporting construction layer comprises an intermediate lath layer and a bottom lath layer bonded to the bottom side of said intermediate lath layer, said intermediate lath layer including fibres perpendicular to the fibres of said wear resistant surface layer and of said bottom lath layer.
Claim 5
Dependent Claim
23 words
A laminated flooring board according to claim 3, characterized in that said bottom lath layer is made of a step silencing fibre board.
Claim 6
Dependent Claim
23 words
A laminated flooring board according to claims 3 or 4 characterized in that said intermediate lath layer comprises a step silencing fibre board.
Claim 7
Dependent Claim
33 words
A laminated flooring board according to claim 1 or 2 characterized in that the supporting construction layer comprises a bottom lath layer of step silencing fibre board fixed to said wear resistant surface.
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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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |