Patent US3142447A successfully refreshed from Google Patents.
US3142447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser holder for ceiling light fixtures
Assignee: Sunbeam Lighting Co
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Filing: 1962-07-06
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Granted: 1964-07-28
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Expires: 1982-07-06
Abstract
No abstract record available.
Inventors
- 👤 Bodian Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:03
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/16; F21V17/162; Y; Y10; Y10T; Y10T292/00; Y10T292/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A CEILING LIGHT FIXTURE, A LAMP HOUSING MEMBER; A LIGHT DIFFUSING MEMBER DISPLACEABLY ATTACHED THERETO; AND MEANS TO LIMIT THE EXTENT OF DISPLACEMENT OF SAID LIGHT DIFFUSING MEMBER FROM SAID HOUSING MEMBER FOR SERVICING, SAID MEANS COMPRISING AT LEAST TWO BRACKET MEANS MOUNTED ON ONE OF SAID MEMBERS AND HAVING A HINGING LINK ATTACHED TO SAID OTHER MEMBER, EACH OF SAID BRACKET MEANS CONSISTING OF A BRACKET BASE HAVING A PAIR OF SLOTS SLIDINGLY ENGAGING THE OUTER ENDS OF A PAIR OF RIGID TOGGLE BARS, PIVOT MEANS CONNECTING THE INNER ENDS OF SAID TOGGLE BARS AND SAID HINGING LINK, AND TENSION SPRING MEANS CONNECTING THE OUTER ENDS OF SAID TOGGLE BARS, WHEREBY THE SAID TWO MEMBERS MAY BE DISPLACED APART OR BROUGHT INTO CLOSE JUXTAPOSITION BY THE DOWN OR UP OVERTHROW POSITION OF SAID TOGGLE BARS.
Claim 2
Dependent Claim
137 words
IN A CEILING LIGHT FIXTURE, A LAMP HOUSING MEMBER; A LIGHT DIFFUSING MEMBER DISPLACEABLY ATTACHED THERETO; AND MEANS TO LIMIT THE EXTENT OF DISPLACEMENT OF SAID LIGHT DIFFUSING MEMBER FROM SAID HOUSING MEMBER FOR SERVICING, SAID MEANS COMPRISING AT LEAST TWO BRACKET MEANS MOUNTED ON ONE OF SAID MEMBERS AND HAVING A HINGING LINK ATTACHED TO SAID OTHER MEMBER, EACH OF SAID BRACKET MEANS CONSISTING OF A BRACKET BASE HAVING A PAIR OF SLOTS SLIDINGLY ENGAGING THE OUTER ENDS OF A PAIR OF RIGID TOGGLE BARS, PIVOT MEANS CONNECTING THE INNER ENDS OF SAID TOGGLE BARS AND SAID HINGING LINK, AND TENSION SPRING MEANS CONNECTING THE OUTER ENDS OF SAID TOGGLE BARS, WHEREBY THE SAID TWO MEMBERS MAY BE DISPLACED APART OR BROUGHT INTO CLOSE JUXTAPOSITION BY THE DOWN OR UP OVERTHROW POSITION OF SAID TOGGLE BARS.
References Cited (Backward Citations)
US2300504A
Cited
US2869908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |