US3636339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting casings
Assignee: Esquire Inc
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Filing: 1970-03-26
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Granted: 1972-01-18
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Expires: 1990-03-26
Abstract
Abstract Lighting casings are provided, the individual panels of which are formed from a plurality of interlocking extruded metal sections. The sections are relatively long and narrow, and include a tongue along one longitudinal edge and a groove along the other. A plurality of individual sections form a composite panel, and the panel may be either planar or curved. The casings provided are economical and simple of construction and yet attractive in appearance.
Inventors
- 👤 Edwin F Osborne Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:46
CPC Classifications
F; F21; F21V; F21V15/00; F21V15/01; F21V17/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
A lamp casing of economical construction presenting an attractive external appearance comprising: a plurality of panels, each panel being formed from a plurality of individual extruded metal sections, each section being relatively long and narrow, at least one of said sections having a tongue connection extending longitudinally throughout its length along one edge thereof, and at least one of said sections having a similarly shaped groove connection extending throughout its length along one edge thereof, so that the sections may be readily interlocked by tongue and groove connection to construct the panel before the panel is formed into its desired shape, all of said sections being substantially identical in width and cross-sectional configuration except for said connections.
Claim 2
Dependent Claim
117 words
A lamp casing of economical construction presenting an attractive external appearance comprising: a plurality of panels, each panel being formed from a plurality of individual extruded metal sections, each section being relatively long and narrow, at least one of said sections having a tongue connection extending longitudinally throughout its length along one edge thereof, and at least one of said sections having a similarly shaped groove connection extending throughout its length along one edge thereof, so that the sections may be readily interlocked by tongue and groove connection to construct the panel before the panel is formed into its desired shape, all of said sections being substantially identical in width and cross-sectional configuration except for said connections.
Claim 3
Dependent Claim
45 words
A casing constructed in accordance with claim 1, wherein said panels comprise at least one section having both tongue and groove connections, and at least one section having only a tongue or groove connection at one end, and including a flange at its opposite end.
Claim 4
Dependent Claim
72 words
A casing constructed in accordance with claim 1, wherein said panels comprise at least one section having both tongue and groove connections, one section having only a tongue connection at one end and including a flange at its opposite end, and one section having only a groove connection at one and and including a flange at its opposite end, so that no tongue or groove connection is visible to the casual observer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |