US3081398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture support
Assignee: Individual
•
Filing: 1960-03-11
•
Granted: 1963-03-12
•
Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Karth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:24
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A CEILING CONSTRUCTION COMPRISING A PLURALITY OF STRUTS FIXED TO AND DEPENDING FROM OVERHEAD STRUCTURE, A SYSTEM OF INTERSECTING SUPPORT MEMBERS SUSPENDED FROM SAID STRUTS, THE SUPPORT MEMBERS FORMED TO PROVIDE HORIZONTALLY DISPOSED FLANGE PORTIONS FOR SUPPORTING CEILING MATERIALS, AND VERTICALLY UPSTANDING RIB PORTIONS ATTACHED TO THE STRUTS, A LIGHTING FIXTURE DISPOSED OVERLYING THE SUPPORT MEMBERS AND SPACED THEREFROM, A PLURALITY OF BRACKETS DEPENDING FROM THE FIXTURE, EACH BRACKET HAVING AN UPPER END FORMED TO PROVIDE LOCKING MEANS AND A LOWER END FORMED TO PROVIDE SUPPORT MEANS, SAID SUPPORT MEANS EXTENDING TO ENGAGEMENT WITH A RIB PORTION OF THE UNDERLYING SUPPORT MEMBERS, AND MEANS FORMED INTEGRAL OF THE FIXTURE FOR DETACHABLY ENGAGING SAID BRACKET LOCKING MEANS.
Claim 2
Dependent Claim
117 words
IN A CEILING CONSTRUCTION COMPRISING A PLURALITY OF STRUTS FIXED TO AND DEPENDING FROM OVERHEAD STRUCTURE, A SYSTEM OF INTERSECTING SUPPORT MEMBERS SUSPENDED FROM SAID STRUTS, THE SUPPORT MEMBERS FORMED TO PROVIDE HORIZONTALLY DISPOSED FLANGE PORTIONS FOR SUPPORTING CEILING MATERIALS, AND VERTICALLY UPSTANDING RIB PORTIONS ATTACHED TO THE STRUTS, A LIGHTING FIXTURE DISPOSED OVERLYING THE SUPPORT MEMBERS AND SPACED THEREFROM, A PLURALITY OF BRACKETS DEPENDING FROM THE FIXTURE, EACH BRACKET HAVING AN UPPER END FORMED TO PROVIDE LOCKING MEANS AND A LOWER END FORMED TO PROVIDE SUPPORT MEANS, SAID SUPPORT MEANS EXTENDING TO ENGAGEMENT WITH A RIB PORTION OF THE UNDERLYING SUPPORT MEMBERS, AND MEANS FORMED INTEGRAL OF THE FIXTURE FOR DETACHABLY ENGAGING SAID BRACKET LOCKING MEANS.
References Cited (Backward Citations)
US2887565A
Cited
US2729411A
Cited
US2976971A
Cited
US2879380A
Cited
US2854565A
Cited
GB813215A
Cited
US2926237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |