Patent US4436135A successfully refreshed from Google Patents.
US4436135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable display system
Assignee: EXTRAVERSION Inc
•
Filing: 1980-01-28
•
Granted: 1984-03-13
•
Expires: 2000-01-28
Abstract
Abstract A portable display system having a plurality of hollow panel assemblies with each comprising two parallel and facing wall boards secured within a border strip device. Eight panel assemblies are hinged together to fold and unfold between a folded position in which all panel assemblies are in parallel stacked relation and an unfolded position in which the panels are open in any one of a number of different positions including a continuous wall arrangement.
Inventors
- 👤 Willy Ytter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:39
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7422; E04B2/7427; G; G09; G09F; G09F15/00; G09F15/0068
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
252 words
A portable display system comprising: a plurality of panel assemblies each comprising a detachable front panel and a detachable rear panel, and border strip means including at least first and second peripheral support members for supporting and positioning the detachable panels in a substantially parallel and confronting relationship; said first peripheral support means at least partially removably positioned along at least one outer edge of said detachable front and rear panels, said second peripheral support means positioned along the other edges of said detachable front and rear panels; hinge means for interconnecting the plurality of panel assemblies with said panel assemblies being divided into first and second arrays; said arrays each including a main panel assembly and at least one other connected panel assembly; said hinge means comprising at least first and second pairs of side hinges and a pair of corner hinges, means securing said first pair of side hinges to side disposed second peripheral support means of adjacent panel assemblies of the first array; means securing said second pair of side hinges to side disposed second peripheral support means of adjacent panel assemblies of the second array; means securing said pair of corner hinges between main panel assemblies of first and second arrays with one of said corner hinges disposed along said side disposed second peripheral support means of first and second array main panel assemblies, and the other of said corner hinges disposed along opposite side disposed second peripheral support means of first and second array main panel assemblies.
Claim 2
Dependent Claim
252 words
A portable display system comprising: a plurality of panel assemblies each comprising a detachable front panel and a detachable rear panel, and border strip means including at least first and second peripheral support members for supporting and positioning the detachable panels in a substantially parallel and confronting relationship; said first peripheral support means at least partially removably positioned along at least one outer edge of said detachable front and rear panels, said second peripheral support means positioned along the other edges of said detachable front and rear panels; hinge means for interconnecting the plurality of panel assemblies with said panel assemblies being divided into first and second arrays; said arrays each including a main panel assembly and at least one other connected panel assembly; said hinge means comprising at least first and second pairs of side hinges and a pair of corner hinges, means securing said first pair of side hinges to side disposed second peripheral support means of adjacent panel assemblies of the first array; means securing said second pair of side hinges to side disposed second peripheral support means of adjacent panel assemblies of the second array; means securing said pair of corner hinges between main panel assemblies of first and second arrays with one of said corner hinges disposed along said side disposed second peripheral support means of first and second array main panel assemblies, and the other of said corner hinges disposed along opposite side disposed second peripheral support means of first and second array main panel assemblies.
Claim 3
Dependent Claim
40 words
A portable display system as set forth in claim 1 wherein said first peripheral support means includes a fixed member and an outer removable member, the facing border strip means of first and second arrays being first peripheral support means.
Claim 4
Dependent Claim
18 words
A portable display system as set forth in claim 2 wherein the facing removable members have interlocking means.
Claim 5
Dependent Claim
19 words
A portable display system as set forth in claim 3 wherein the interlocking means includes tongue and groove means.
Claim 6
Dependent Claim
22 words
A portable display system as set forth in claim 3 wherein said fixed and removable members are keyed for single direction interconnection.
Claim 7
Dependent Claim
71 words
A portable display system as set forth in claim 1 wherein the first peripheral support means includes a fixed member and an outer removable member, the facing border strip means of first and second arrays being first peripheral support means with their removable member having mating integral interlock means so that the first and second arrays are interlocked in a full open position of the system, one array overlying the other.
Claim 8
Dependent Claim
64 words
A portable display system as set forth in claim 6 wherein the interlock means extends along each removable member a distance less than the length of the removable member leaving interlock free ends that enable said at least one other connected panel assemblies of adjacent arrays to be maintained folded out of interlock relationship while the main panel assemblies of adjacent arrays are interlocked.
Claim 9
Dependent Claim
44 words
A portable display system as set forth in claim 7 wherein one of the corner hinges includes planar arranged hinge ends, one end fitted between adjacent panel assemblies of one array and the other end fitted between adjacent panel assemblies of the other array.
Claim 10
Dependent Claim
28 words
A portable display system as set forth in claim 7 wherein the interlock means extend at least in part out of the outer surface of the removable member.
Claim 11
Dependent Claim
23 words
A portable display system as set forth in claim 7 wherein the interlock means is provided between all panel assemblies of adjacent arrays.
Claim 12
Dependent Claim
26 words
A portable display system as set forth in claim 1 wherein the corner hinges are the only hinging connection between the first and second array assemblies.
References Cited (Backward Citations)
US1282685A
Cited
US3312032A
Cited
US3300899A
Cited
US3341992A
Cited
US3768222A
Cited
US3803787A
Cited
US4060294A
Cited
US4147198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |