Patent US4074452A successfully refreshed from Google Patents.
US4074452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knockdown lighting boxes and means for clamping the front panels thereof
Assignee: EXHIBITGROUP Inc 2855 CARL STREET ELK GROVE VILLAGE IL 60007 A CORP OF
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Filing: 1976-08-12
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Granted: 1978-02-21
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Expires: 1996-08-12
Abstract
Abstract A plurality of light boxes adapted to be transported and stored in a knocked-down and disassembled condition to be readily assembled, set up and connected together, with a divider between adjacent light boxes and with a front translucent panel for each light box which is lit up by lights within each light box. Each translucent panel having a flange, with the flanges of the adjacent panels being held in abutting relationship by clamping means which eliminates mullions therebetween and with the clamping means so constructed to eliminate and/or reduce the shadows on the panels at such junctures. The adjacent panels presenting when lighted a continuous surface where the dividing lines between adjacent panels are substantially imperceptible.
Inventors
- 👤 Alex J. Bellinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/0409; G09F13/0418; G09F13/0445
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
A plurality of light boxes adapted to be transported and/or stored in a knocked-down and disassembled condition to be assembled, set up, and connected together, comprising spaced end walls, a rear wall, top and bottom members and a divider between each pair of adjacent light boxes, a front panel for each light box, each front panel having a flange at right angles to the plane of the panel, clamping means including a pair of elongated strips connected by fastening means engaging the flanges of adjacent front panels for securing the adjacent flanges on adjacent panels together, said strips having beveled edges to eliminate shadows on the associated front panels so that the front panels are connected to each other free of exterior mullions therebetween to present a continuous front panel surface, and lighting means positioned inside each said light box for illuminating said front panels.
Claim 2
Dependent Claim
145 words
A plurality of light boxes adapted to be transported and/or stored in a knocked-down and disassembled condition to be assembled, set up, and connected together, comprising spaced end walls, a rear wall, top and bottom members and a divider between each pair of adjacent light boxes, a front panel for each light box, each front panel having a flange at right angles to the plane of the panel, clamping means including a pair of elongated strips connected by fastening means engaging the flanges of adjacent front panels for securing the adjacent flanges on adjacent panels together, said strips having beveled edges to eliminate shadows on the associated front panels so that the front panels are connected to each other free of exterior mullions therebetween to present a continuous front panel surface, and lighting means positioned inside each said light box for illuminating said front panels.
Claim 3
Dependent Claim
32 words
A structure as set forth in claim 1 in which division between adjacent connected front panels is substantially imperceptible so that said connected panels give the appearance of a continuous front panel.
Claim 4
Dependent Claim
31 words
A structure as set forth in claim 1, wherein the interior dividers forming adjacent light boxes are removable to vary the size and number of light boxes in the overall structure.
Claim 5
Dependent Claim
26 words
A structure as set forth in claim 1 in which said clamping means are accessible through an opening in the rear wall of the light box.
Claim 6
Dependent Claim
20 words
A structure as set forth in claim 1 in which the front panels are formed of a translucent plastic material.
Claim 7
Dependent Claim
32 words
A structure as set forth in claim 1 in which said strips engage the flanges of adjacent front panels and the rear edges of the flanges engage the front of the divider.
Claim 8
Dependent Claim
21 words
A structure as set forth in claim 6 in which the front edge of each of the clamping strips is beveled.
Claim 9
Dependent Claim
43 words
A structure as set forth in claim 1 in which the bottom and top each have cleats with openings therein which align with openings in the end wall and divider and through which the fastening means extend for detachably securing said parts together.
Claim 10
Dependent Claim
46 words
A structure as set forth in claim 8 in which the end wall, top and bottom have right-angled strips secured to the front of each in spaced relation thereto to provide spaces to receive the top, bottom and outer end of each of the front panels.
Claim 11
Dependent Claim
19 words
A structure as set forth in claim 9 in which the front panels are formed of a translucent material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |