US5124900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light diffuser
Assignee: MANIFESTO Corp A CORP OF WA
•
Filing: 1989-11-28
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Granted: 1992-06-23
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Expires: 2009-11-28
Abstract
Abstract Sheets (26, 28, 30, 32) of aromatic polyamide polymer fibers are folded or formed into various shapes and constructions and used as light diffusers on lamps. The light diffusers are resistant to combustion which allows them to be placed closer to the light source. The diffusers are translucent and provide an appearance similar to parchment or rice paper.
Inventors
- 👤 Douglas Varey
- 👤 Harold H. Kawaguchi
- 👤 Brent E. Markee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
F; F21; F21V; F21V1/00; F21V1/14; F21V1/16; F21V1/22; Y; Y10; Y10S; Y10S428/00; Y10S428/902
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
21 words
An article for diffusing light comprising a substantially continuous paper-like layer of aromatic polyamide polymer fibers and an overlapping polyester film.
Claim 2
Dependent Claim
21 words
An article for diffusing light comprising a substantially continuous paper-like layer of aromatic polyamide polymer fibers and an overlapping polyester film.
Claim 3
Dependent Claim
24 words
The article of claim 1, wherein the layer of aromatic polyamide polymer fibers ranges in thickness from about 3.0 mils to about 7.0 mils.
Claim 4
Dependent Claim
21 words
The article of claim 1, wherein the layer of aromatic polyamide polymer fibers is coated with an ultraviolet light blocking agent.
Claim 5
Dependent Claim
20 words
The article of claim 1, wherein the polyester film ranges in thickness from about 5.0 mils to about 10.0 mils.
Claim 6
Dependent Claim
31 words
The article of claim 1, further comprising a second overlapping layer of aromatic polyamide polymer fibers, the polyester film being sandwiched between the two layers of the aromatic polyamide polymer fibers.
Claim 7
Dependent Claim
30 words
The article of claim 5, wherein each of the two layers of aromatic polyamide polymer fibers are about 3.0 mils thick and the polyester film is about 7.5 mils. thick.
Claim 8
Dependent Claim
19 words
A light shade comprising a substantially continuous paper-like layer of aromatic polyamide polymer fibers and an overlapping polyester film.
Claim 9
Dependent Claim
19 words
A light shade comprising a substantially continuous paper-like layer of aromatic polyamide polymer fibers and an overlapping polyester film.
Claim 10
Dependent Claim
21 words
The light shade of claim 7, wherein the polyester film ranges in thickness from about 5.0 mils to about 10.0 mils.
Claim 11
Dependent Claim
32 words
The light shade of claim 7, further comprising a second overlapping layer of aromatic polyamide polymer fibers, the polyester film being sandwiched between the two layers of the aromatic polyamide polymer fibers.
Claim 12
Dependent Claim
31 words
The light shade of claim 9, wherein each of the two layers of aromatic polyamide polymer fibers is about 3.0 mils thick and the polyester film is about 7.5 mils thick.
Claim 13
Dependent Claim
25 words
The light shade of claim 7, wherein the layer of aromatic polyamide polymer fibers ranges in thickness from about 3.0 mils to about 7.0 mils.
Claim 14
Dependent Claim
22 words
The light shade of claim 7, wherein the layer of aromatic polyamide polymer fibers is coated with an ultraviolet light blocking agent.
Claim 15
Dependent Claim
88 words
A light diffuser mounted on a plurality of support arms positioned around a light source, the light diffuser including identical first, second, third and fourth folded sections, each section comprising a folded substantially continuous paper-like layer of aromatic polyamide polymer fibers, the folded paper-like layer including a plurality of aligned apertures, each aperture capable of receiving and retaining a fastener capable of being attached to a support arm, each folded section including a singular aperture capable of being aligned with the plurality of apertures of an adjacent section.
Claim 16
Dependent Claim
88 words
A light diffuser mounted on a plurality of support arms positioned around a light source, the light diffuser including identical first, second, third and fourth folded sections, each section comprising a folded substantially continuous paper-like layer of aromatic polyamide polymer fibers, the folded paper-like layer including a plurality of aligned apertures, each aperture capable of receiving and retaining a fastener capable of being attached to a support arm, each folded section including a singular aperture capable of being aligned with the plurality of apertures of an adjacent section.
Claim 17
Dependent Claim
50 words
The light diffuser of claim 13, wherein the singular aperture of the first section and the plurality of aligned apertures of the second section are aligned, the first section being fastened to the second section by a fastener means passing through the aligned singular aperture and the plurality of apertures.
Claim 18
Dependent Claim
17 words
The light diffuser of claim 13, wherein each of the sections is attached to two adjacent sections.
Claim 19
Dependent Claim
28 words
The light diffuser of claim 13, wherein a neoprene plug extends through at least two sections of the light diffuser and onto the end of a support arm.
Claim 20
Dependent Claim
17 words
The light diffuser of claim 13, wherein the support arms are positioned uniformly around the light source.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |