Patent US4819356A successfully refreshed from Google Patents.
US4819356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable sign letter support for marquee signs
Assignee: Individual
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Filing: 1987-07-23
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Granted: 1989-04-11
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Expires: 2007-07-23
Abstract
Abstract In a changeable marquee sign, a plurality of elongated corrugated sheet material racks are horizontally disposed in vertically spaced relation. The ridges of the corrugated shape form forward and rearwardly facing vertical grooves which cooperatively receive spaced-apart longitudinally extending teeth formed on opposing end edge surfaces of a plurality of sign character panels to prevent unauthorized movement of the panels relative to each other or to the plane of the sign. The several panels being chosen to impart a desired message.
Inventors
- 👤 Gilbert Spidell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/02; G09F7/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A changeable character sign, comprising: a sign support; a plurality of elongated rack means rigidly secured horizontally in vertically spaced relation to said sign support and defining a sign plane having forward and rearward surfaces, each said rack means having a series of juxtaposed alternately forwardly and rearwardly facing vertically oriented grooves; a plurality of sign character panels extending between adjacent said rack means and having upper and lower ends; and, means on said panel ends cooperatively engaging said racks for normally preventing lateral movement of said panels relative to each other or the sign plane.
Claim 2
Dependent Claim
96 words
A changeable character sign, comprising: a sign support; a plurality of elongated rack means rigidly secured horizontally in vertically spaced relation to said sign support and defining a sign plane having forward and rearward surfaces, each said rack means having a series of juxtaposed alternately forwardly and rearwardly facing vertically oriented grooves; a plurality of sign character panels extending between adjacent said rack means and having upper and lower ends; and, means on said panel ends cooperatively engaging said racks for normally preventing lateral movement of said panels relative to each other or the sign plane.
Claim 3
Dependent Claim
42 words
The sign according to claim 1 in which the rack means includes: corrugated sheet material having alternating ridges and valleys and in which adjacent ridges define a groove open vertically and toward the respective forward or rearward surface of the sign plane.
Claim 4
Dependent Claim
58 words
The sign according to claim 2 in which the panel end means includes: a series of equally spaced-apart teeth projecting longitudinally in the plane of the respective panel and cooperatively received by the grooves, the length of said teeth on the panel upper ends being at least twice the length of the teeth on the panel lower ends.
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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |