Patent US3344271A successfully refreshed from Google Patents.
US3344271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light baffle for lay-in fixture closure
Assignee: —
•
Filing: —
•
Granted: 1967-09-26
•
Expires: 1984-09-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:09
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A RECTANGULAR FIXTURE FOR LAY-IN TYPE CLOSURES, WHEREIN A DIFFUSER PANEL IS SUPPORTED IN USE BY TWO, OPPOSITELY DISPOSED PARALLEL FLANGES ON TWO EDGES OF A FIXED PART OF THE FIXTURE AND THE DIFFUSER PANEL IS ARRANGED TO BE SWUNG DOWN FOR MAINTENANCE, THE IMPROVEMENT COMPRISING A MOLDING DEFINING A U-SHAPED CHANNEL AT AN EDGE OF SAID FIXED PART OF THE FIXTURE AT RIGHT ANGLES TO THE PANEL-SUPPORTING FLANGES, AND A GASKET MOUNTED IN SAID CHANNEL AND PROJECTING ABOVE AND INBOARDLY BEYOND SAID CHANNEL-DEFINING MOLDING, SAID GASKET BEING MADE OF SOFTLY RESILIENT MATERIAL AND COMPRISING A HOLLOW BODY SHAPED COMPLEMENTARILY TO SAID CHANNEL TO FIT SNUGLY THEREIN, A THIN, FLEXIBLE NECK PROJECTING INBOARDLY FROM AN UPPER INBOARD EDGE OF SAID BODY, AND A THIN-WALLED HOLLOW TUBULAR BEAD ON AND ALONG THE INBOARD SIDE OF SAID NECK.
Claim 2
Dependent Claim
137 words
IN A RECTANGULAR FIXTURE FOR LAY-IN TYPE CLOSURES, WHEREIN A DIFFUSER PANEL IS SUPPORTED IN USE BY TWO, OPPOSITELY DISPOSED PARALLEL FLANGES ON TWO EDGES OF A FIXED PART OF THE FIXTURE AND THE DIFFUSER PANEL IS ARRANGED TO BE SWUNG DOWN FOR MAINTENANCE, THE IMPROVEMENT COMPRISING A MOLDING DEFINING A U-SHAPED CHANNEL AT AN EDGE OF SAID FIXED PART OF THE FIXTURE AT RIGHT ANGLES TO THE PANEL-SUPPORTING FLANGES, AND A GASKET MOUNTED IN SAID CHANNEL AND PROJECTING ABOVE AND INBOARDLY BEYOND SAID CHANNEL-DEFINING MOLDING, SAID GASKET BEING MADE OF SOFTLY RESILIENT MATERIAL AND COMPRISING A HOLLOW BODY SHAPED COMPLEMENTARILY TO SAID CHANNEL TO FIT SNUGLY THEREIN, A THIN, FLEXIBLE NECK PROJECTING INBOARDLY FROM AN UPPER INBOARD EDGE OF SAID BODY, AND A THIN-WALLED HOLLOW TUBULAR BEAD ON AND ALONG THE INBOARD SIDE OF SAID NECK.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |