US4290099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lampshade
Assignee: B Blumenthal and Co Inc
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Filing: 1979-06-18
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Granted: 1981-09-15
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Expires: 1999-06-18
Abstract
Abstract To minimize storage and transportation space, lampshades are produced, e.g. at the factory, as self-assembly kits each comprising a pair of rings, a plurality of connecting rods, and a gimbal consisting of a lampholder-receiving annulus with struts extending therefrom, together with a covering fabric panel and an optional lining fabric panel. The rods and struts have, on their free ends, respective tee-pieces each comprising a socket part which is a friction fit on the respective rod or strut, and a cross-piece which is slotted from end to end. The kit can be packed in a package of shape and dimensions in plan such as to contain the larger of the two rings and of a depth to contain the gimbal on its side. The eventual user assembles the lampshade with the connecting rods extending between the two rings and holding the latter spaced apart, the cross-piece of their tee-pieces being snapped onto the rings. Thereafter the covering panel (and the lining if used) is secured in place between the two rings, e.g. by sewing, clipping, or adhering.
Inventors
- 👤 Nigel Vicars-Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:18
CPC Classifications
F; F21; F21V; F21V1/00; F21V1/02; F21V1/06; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
A lampshade having a framework including an upper ring, a lower ring, a plurality of connecting rods connecting said rings and holding them in spacedapart relationship, a gimbal composed of a lampholder-annulus and struts extending therefrom to one of said rings, and a covering supported by the upper and lower rings of the framework, wherein the invention comprises tee-pieces on the ends of the rods for connecting the rods to the rings, each said tee-piece having a tubular socket part into which the respective end of the respective rod is friction fit, a resilient, stabilizing cross-piece on an end of the socket part, said cross-piece having a length that is at least equal to the length of said socket part, said cross-piece being slotted from end to end in order to establish a narrow gap that provides a snap fit on the respective ring and to conform to the arcuate ring curvature, and a respective stiffening web in each of the angles between the socket and the cross-piece, each of said webs extending from the approximate socket part mid-point to the approximate mid-point of the adjacent portion of the cross-piece.
Claim 2
Dependent Claim
190 words
A lampshade having a framework including an upper ring, a lower ring, a plurality of connecting rods connecting said rings and holding them in spacedapart relationship, a gimbal composed of a lampholder-annulus and struts extending therefrom to one of said rings, and a covering supported by the upper and lower rings of the framework, wherein the invention comprises tee-pieces on the ends of the rods for connecting the rods to the rings, each said tee-piece having a tubular socket part into which the respective end of the respective rod is friction fit, a resilient, stabilizing cross-piece on an end of the socket part, said cross-piece having a length that is at least equal to the length of said socket part, said cross-piece being slotted from end to end in order to establish a narrow gap that provides a snap fit on the respective ring and to conform to the arcuate ring curvature, and a respective stiffening web in each of the angles between the socket and the cross-piece, each of said webs extending from the approximate socket part mid-point to the approximate mid-point of the adjacent portion of the cross-piece.
Claim 3
Dependent Claim
184 words
A lampshade having a framework including an upper ring and lower ring and plurality of connecting rods connecting the rings and holding them in spaced-apart relationship, a gimbal composed of a lampholder-annulus and struts extending therefrom to one of the rings, a covering supported by the upper and lower rings of the framework, wherein the invention comprises tee-pieces that join respective connecting rods to at least one of the rings, each tee-piece comprising a tubular socket into which a respective end of a respective rod is friction fit, a resilient, stabilizing cross-piece having a length that is at least equal to the length of the socket part, said cross-piece being sotted from end to end in order to establish a narrow gap that provides snap fit on the ring and to conform to the arcuate curve thereof on an end of the socket part, each tee-piece having a respective stiffening web in each of the angles between the socket and the cross-piece each of said webs extending from the approximate socket part mid-point to the approximate mid-point of the adjacent portion of the cross-piece.
Claim 4
Dependent Claim
184 words
A lampshade having a framework including an upper ring and lower ring and plurality of connecting rods connecting the rings and holding them in spaced-apart relationship, a gimbal composed of a lampholder-annulus and struts extending therefrom to one of the rings, a covering supported by the upper and lower rings of the framework, wherein the invention comprises tee-pieces that join respective connecting rods to at least one of the rings, each tee-piece comprising a tubular socket into which a respective end of a respective rod is friction fit, a resilient, stabilizing cross-piece having a length that is at least equal to the length of the socket part, said cross-piece being sotted from end to end in order to establish a narrow gap that provides snap fit on the ring and to conform to the arcuate curve thereof on an end of the socket part, each tee-piece having a respective stiffening web in each of the angles between the socket and the cross-piece each of said webs extending from the approximate socket part mid-point to the approximate mid-point of the adjacent portion of the cross-piece.
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) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |