US3829677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective means used in connection with fluorescent tubes or lamps
Assignee: LLANO M DE
•
Filing: 1972-11-07
•
Granted: 1974-08-13
•
Expires: 1992-11-07
Abstract
Abstract A reflector for a fluorescent tubular light. The reflector is formed by an elongated shell of parabolic cross section. A smaller but also parabolic rib extends lengthwise along the apex of the shell parabola.
Inventors
- 👤 Llano M De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:26
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21V7/06; F21V7/005; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A reflector for a fluorescent tubular light, said reflector incorporating an elongated shell of parabolic cross section with a rib integral with and extending lengthwise along the shell at the apex of the parabola, said rib being also parabolic in cross section with the major axis thereof parallel to the major axis of the shell.
Claim 2
Dependent Claim
55 words
A reflector for a fluorescent tubular light, said reflector incorporating an elongated shell of parabolic cross section with a rib integral with and extending lengthwise along the shell at the apex of the parabola, said rib being also parabolic in cross section with the major axis thereof parallel to the major axis of the shell.
Claim 3
Dependent Claim
18 words
A reflector as claimed in claim 1, wherein the parabolic rib is directed inwardly from the shell apex.
Claim 4
Dependent Claim
62 words
A reflector for fluorescent tubular lights comprising at least two elongated shells lying side-by-side and interconnected, each said shell being of parabolic cross section with a rib integral with and extending lengthwise along the shell at the apex of the parabola, said rib being also parabolic in cross section with the major axis thereof parallel to the major axis of the shell.
Claim 5
Dependent Claim
62 words
A reflector for fluorescent tubular lights comprising at least two elongated shells lying side-by-side and interconnected, each said shell being of parabolic cross section with a rib integral with and extending lengthwise along the shell at the apex of the parabola, said rib being also parabolic in cross section with the major axis thereof parallel to the major axis of the shell.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |