US3890753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling or wall covering
Assignee: Individual
•
Filing: 1973-03-13
•
Granted: 1975-06-24
•
Expires: 1993-03-13
Abstract
Abstract A ceiling or wall covering comprising a plurality of rectangular panels that are suspended in supporting rails by means of locking members which are slidably received in undercut grooves in the rails and may be fixed in the desired position by being turned 90* around an axis that is perpendicular to the covering. Between each pair of sidewise adjoining panels a slot is left which gives access for a tool to displace and turn the locking members.
Inventors
- 👤 Jorgen Skoubo Johansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:30
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/22; E04B9/24; E04B9/247; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3439; Y10T24/344
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
167 words
A ceiling or wall covering comprising: parallel supporting rails, an undercut groove in each rail, a plurality of panels, locking members, each of which has a body with at least one retaining wing for engaging adjoining edges of two adjacent panels, a head, and a neck portion, said panels being detachably fastened to said rails by said locking members, each of said bodies being turnable and slidable in the groove of an associated supporting rail, each of said bodies being fixed in its associated rail by turning said body about an axis at right angle to the face of the panel, adjacent panels being separated by a space located directly adjacent and parallel to an associated supporting rail, each space providing access for a tool such as a screwdriver to turn and slide each of said locking members in the groove of its associated supporting rail, and the greatest cross-sectional dimension of the neck portion of each locking member is less than the width of said space.
Claim 2
Dependent Claim
167 words
A ceiling or wall covering comprising: parallel supporting rails, an undercut groove in each rail, a plurality of panels, locking members, each of which has a body with at least one retaining wing for engaging adjoining edges of two adjacent panels, a head, and a neck portion, said panels being detachably fastened to said rails by said locking members, each of said bodies being turnable and slidable in the groove of an associated supporting rail, each of said bodies being fixed in its associated rail by turning said body about an axis at right angle to the face of the panel, adjacent panels being separated by a space located directly adjacent and parallel to an associated supporting rail, each space providing access for a tool such as a screwdriver to turn and slide each of said locking members in the groove of its associated supporting rail, and the greatest cross-sectional dimension of the neck portion of each locking member is less than the width of said space.
Claim 3
Dependent Claim
57 words
A ceiling or wall covering as claimed in claim 1 wherein: each of said panels is rectangular, one pair of opposite edges of each panel have grooves to engage with the at least one retaining wing of an associated one of said locking members, and the other pair of associated edges of each panel have opposing rabbets.
Claim 4
Dependent Claim
42 words
A ceiling or wall covering as claimed in claim 1 wherein: the head of each locking member and the surface of each supporting rail groove are bevelled so that each locking member is drawn into the associated groove when it is turned.
Claim 5
Dependent Claim
35 words
A ceiling or wall covering as claimed in claim 1 wherein: the head of each locking member is bevelled so that the panels are urged toward the supporting rails when the locking members are turned.
References Cited (Backward Citations)
US1934760A
Cited
US2006300A
Cited
US2427879A
Cited
US2921464A
Cited
US3094201A
Cited
US3319983A
Cited
US3436108A
Cited
US3478480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |