Patent US4068439A successfully refreshed from Google Patents.
US4068439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall covering
Assignee: Hoechst AG
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Filing: 1976-09-20
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Granted: 1978-01-17
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Expires: 1996-09-20
Abstract
Abstract A wall covering system of plastics elements consisting of strips of sheeting or panels the lateral edges of which are folded by an angle of more than 90° and profiles having a dovetail cross section for holding and fastening the strips, wherein the profiles are fixed on structural shapes, fastened to the wall and likewise having a dovetail cross section, by means of spacers of V-shaped cross section with chamfered end sections, which spacers are fitted into the structural shapes in a manner to enable them to slide in longitudinal direction.
Inventors
- 👤 Heinz-Erhardt Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:45
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/18; E04F13/0801; E04F13/0803
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
A wall covering system of plastic elements consisting of panels having lateral edges folded by an angle of more than 90°; profiles having a dovetail cross section for holding the panels; structural shapes having a dovetail cross section, said structural shapes are fastened in parallel position on the wall; and spacers having V-shaped cross section with such chamfered end faces that their inclination degree corresponds to the inclination of the lateral faces of the profiles and having a length which corresponds to that of the panels, said spacers are fitted into the structural shapes in which they are sliding in longitudinal direction and fix the profiles on the structural shapes, whereby the folded edges of said panels constitute together with said profiles a form-closed fitting.
Claim 2
Dependent Claim
125 words
A wall covering system of plastic elements consisting of panels having lateral edges folded by an angle of more than 90°; profiles having a dovetail cross section for holding the panels; structural shapes having a dovetail cross section, said structural shapes are fastened in parallel position on the wall; and spacers having V-shaped cross section with such chamfered end faces that their inclination degree corresponds to the inclination of the lateral faces of the profiles and having a length which corresponds to that of the panels, said spacers are fitted into the structural shapes in which they are sliding in longitudinal direction and fix the profiles on the structural shapes, whereby the folded edges of said panels constitute together with said profiles a form-closed fitting.
Claim 3
Dependent Claim
95 words
A wall covering system as claimed in claim 1, in which the panels have lateral edges being folded by an angle of 120° to 150° and being a little smaller than the lateral faces of said profiles; the profiles have a cross section in the form of an isosceles triangle which is opened at the vertex forming a slit which has a width such that two panels can be inserted; and the structural shapes have lateral edges being folded by an angle of 120° to 150° and having a height of 0,2 to 1 cm.
Claim 4
Dependent Claim
19 words
A wall covering system as claimed in claim 2, wherein the the panels are relatively thin, stiff and flexible.
Claim 5
Dependent Claim
22 words
A wall covering system as claimed in claim 3, wherein the profiles and structural shapes incorporate relatively thin, stiff and flexible sections.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |