US3159352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire
Assignee: Wakefield Corp
•
Filing: 1960-11-16
•
Granted: 1964-12-01
•
Expires: 1980-11-16
Abstract
No abstract record available.
Inventors
- 👤 George P Wakefield
- 👤 Harvey H Vick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:55
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/107; F21S; F21S8/00; F21S8/04; F21V15/00; F21V15/01; F21V15/015; F21V21/00; F21V21/005; F21V23/00; F21V23/02; F21V5/00; F21V5/02; F21V3/00; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
176 words
A LUMINAIRE COMPRISING AN ELONGATED BODY MEMBER HAVING DOWNTURNED AND OUTURNED FLANGES ALONG ITS OPPOSITE EDGES AND DOWNTURNED PLATES AT ITS ENDS; PAIRS OF LAMPHOLDERS SECURED TO SAID LUMINIARE BETWEEN SAID PLATES FOR RECEIVING A PAIR OF PARELLEL TUBULAR LAMPS THEREBETWEEN; SAID BODY MEMBER BEING FORMED WITH A CENTRAL DOWNWARDLY OPEN LONGITUDINAL CHANNEL INWARDLY OF SAID DOWNTURNED AND OUTTURNED FLANGES; A COVER MEMBER HAVING DETACHABLE ENGAGEMENT WITH SAID CHANNEL TO FORM A BALLAST CHAMBER AND A WIREWAY; SAID BODY MEMBER AND COVER MEMBER DEFINING A LONGITUDINAL V-SHAPED REFLECTOR BETWEEN SUCH LAMPS; A LIGHT TRANSMITTING REFRACTOR HAVING INTURNED FLANGES STRADDLING SAID DOWNTURNED FLANGES AND RESTING ON THE RECEPTIVE OUTTURNED FLANGES AND OPPOSITE SIDES AND A BOTTOM ENCLOSING SUCH LAMPS, SAID REFRACTOR HAVING LIGHT TRANSMITTING ENDS DISPOSED BETWEEN SAID PLATES AND EXTENDING INWARDLY FROM THE SIDES AND UPWARDLY FROM THE BOTTOM TO THE SIDES AND BOTTOMS OF THE PERIMETERS OF THE RESPECTIVE PLATES; AND SPRING MEANS ON SAID PLATES YIELDING BEARING DOWN ON SUCH UPWARDLY EXTENDING END PORTIONS TO YIELDING HOLD SAID INTURNED FLANGES AGAINST SAID OUTTURNED FLAGES
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |