US4528763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sign having changeable displays
Assignee: PRISMAVISION AB
•
Filing: 1984-01-17
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Granted: 1985-07-16
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Expires: 2004-01-17
Abstract
Abstract A sign formed from plural trilateral display screen assemblies, each assembly being rotatable to dispose one of three screen sides in a forward position, wherein all corresponding screen sides in such forward position collectively defining and displaying a picture.
Inventors
- 👤 Stig B. Ahlgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/02; G09F11/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
An improved sign formed from a plurality of trilateral display screen assemblies wherein each assembly comprises: (a) an elongate body having a substantially uniform transverse cross-sectional configuration defined in part by a plurality of radially extending anchorage portions; (b) a screen of elongate configuration and including a pair of spaced longitudinal ribs associated with each anchorage portion; (c) each anchorage portion including a holder having two pairs of resilient arms for detachably mounting a corresponding screen side to the anchorage portion, wherein each longitudinal rib of the screen side is detachably snap-fitted between each pair of arms; and (d) means for rotating the body to position each screen side into a forwardly facing position.
Claim 2
Dependent Claim
114 words
An improved sign formed from a plurality of trilateral display screen assemblies wherein each assembly comprises: (a) an elongate body having a substantially uniform transverse cross-sectional configuration defined in part by a plurality of radially extending anchorage portions; (b) a screen of elongate configuration and including a pair of spaced longitudinal ribs associated with each anchorage portion; (c) each anchorage portion including a holder having two pairs of resilient arms for detachably mounting a corresponding screen side to the anchorage portion, wherein each longitudinal rib of the screen side is detachably snap-fitted between each pair of arms; and (d) means for rotating the body to position each screen side into a forwardly facing position.
Claim 3
Dependent Claim
24 words
The sign of claim 1 wherein the means for rotating the body includes a driven dog member engageable with one end of the body.
Claim 4
Dependent Claim
31 words
The sign of claim 2 wherein: (a) each anchorage portion includes a recess; and (b) the dog member includes a plurality of studs engageable within the recesses of the anchorage portions.
Claim 5
Dependent Claim
57 words
The sign of claim 3 wherein: (a) the dog member includes a circular portion, with the studs being directed radially outwardly from the circular portion; and (b) the end of the body engageable by the dog member further includes a circular configuration corresponding to the configuration of the circular portion of the dog member for receiving same.
Claim 6
Dependent Claim
27 words
The sign of claim 4 further including means associated with the dog member for supporting the screen sides and preventing the sliding of same along the body.
Claim 7
Dependent Claim
26 words
The sign of claim 2 wherein the means for rotating the body further includes a substantially cylindrical holder engageable with the other end of the body.
Claim 8
Dependent Claim
24 words
The sign of claim 6 wherein the cylindrical holder is supported for displacement and includes a free end having a substantially rounded-off end edge.
Claim 9
Dependent Claim
27 words
The sign of claim 6 wherein the cylindrical holder is formed of resilient material having a substantially tapered configuration for facilitating engagement and manipulation of the body.
References Cited (Backward Citations)
BE639830A
Cited
US3304638A
Cited
US3387394A
Cited
FR1600001A
Cited
GB1374657A
Cited
US3826027A
Cited
GB1377514A
Cited
US3798811A
Cited
US3921321A
Cited
US4002022A
Cited
GB1470785A
Cited
GB2105895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |