US3315072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire
Assignee: McGraw Edison Co
•
Filing: 1965-08-16
•
Granted: 1967-04-18
•
Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Donald W Harling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:36
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A LUMINAIRE COMPRISING AN INVERTED DISHED HOUSING HAVING A BOTTOM OPENING, A CLOSURE MEMBER HINGEDLY MOUNTED ON SAID HOUSING AND HAVING A PERIPHERAL EDGE SUBSTANTIALLY COEXTENSIVE WITH THE BOTTOM OPENING OF SAID HOUSING, MEANS FOR SECURING SAID CLOSURE MEMBER IN A CLOSED POSITION RELATIVE TO SAID HOUSING, AN APERTURE FORMED IN SAID CLOSURE MEMBER, A BOWL-SHAPED REFRACTOR HAVING AN OUTWARDLY EXTENDING PERIPHERAL FLANGE ENGAGING THE MARGIN OF SAID APERTURE, ENGAGEMENT MEANS FORMED IN SAID REFRACTOR AND BELOW SAID PERIPHERAL FLANGE, FIRST LATCH SPRING MEANS AFFIXED TO SAID CLOSURE MEMBER ADJACENT SAID APERTURE AND BEING RELEASABLY ENGAGEABLE WITH SAID ENGAGEMENT MEANS TO RESILIENTLY URGE SAID REFRACTOR FLANGE DOWNWARDLY INTO ENGAGEMENT WITH THE MARGIN OF SAID APERTURE, AN INVERTED DISHED REFLECTOR HAVING AN OUTWARDLY EXTENDING BOTTOM PERIPHERAL FLANGE COEXTENSIVE WITH SAID REFRACTOR FLANGE, SECOND LATCH SPRING MEANS MOUNTED ON SAID CLOSURE MEMBER AND ENGAGING THE UPPER SURFACE OF SAID REFLECTOR FLANGE TO URGE SAID REFLECTOR FLANGE INTO RESILIENT ENGAGEMENT WITH SAID REFRACTOR FLANGE, EACH OF SAID LATCH SPRING MEANS HAVING A PORTION SPACED FROM SAID REFRACTOR AND REFLECTOR AND OPERATIVE UPON MOVEMENT OUTWARDLY THEREFROM TO UNLATCH ITS RESPECTIVE LATCH SPRING MEANS FROM SAID REFRACTOR AND REFLECTOR.
Claim 2
Dependent Claim
194 words
A LUMINAIRE COMPRISING AN INVERTED DISHED HOUSING HAVING A BOTTOM OPENING, A CLOSURE MEMBER HINGEDLY MOUNTED ON SAID HOUSING AND HAVING A PERIPHERAL EDGE SUBSTANTIALLY COEXTENSIVE WITH THE BOTTOM OPENING OF SAID HOUSING, MEANS FOR SECURING SAID CLOSURE MEMBER IN A CLOSED POSITION RELATIVE TO SAID HOUSING, AN APERTURE FORMED IN SAID CLOSURE MEMBER, A BOWL-SHAPED REFRACTOR HAVING AN OUTWARDLY EXTENDING PERIPHERAL FLANGE ENGAGING THE MARGIN OF SAID APERTURE, ENGAGEMENT MEANS FORMED IN SAID REFRACTOR AND BELOW SAID PERIPHERAL FLANGE, FIRST LATCH SPRING MEANS AFFIXED TO SAID CLOSURE MEMBER ADJACENT SAID APERTURE AND BEING RELEASABLY ENGAGEABLE WITH SAID ENGAGEMENT MEANS TO RESILIENTLY URGE SAID REFRACTOR FLANGE DOWNWARDLY INTO ENGAGEMENT WITH THE MARGIN OF SAID APERTURE, AN INVERTED DISHED REFLECTOR HAVING AN OUTWARDLY EXTENDING BOTTOM PERIPHERAL FLANGE COEXTENSIVE WITH SAID REFRACTOR FLANGE, SECOND LATCH SPRING MEANS MOUNTED ON SAID CLOSURE MEMBER AND ENGAGING THE UPPER SURFACE OF SAID REFLECTOR FLANGE TO URGE SAID REFLECTOR FLANGE INTO RESILIENT ENGAGEMENT WITH SAID REFRACTOR FLANGE, EACH OF SAID LATCH SPRING MEANS HAVING A PORTION SPACED FROM SAID REFRACTOR AND REFLECTOR AND OPERATIVE UPON MOVEMENT OUTWARDLY THEREFROM TO UNLATCH ITS RESPECTIVE LATCH SPRING MEANS FROM SAID REFRACTOR AND REFLECTOR.
References Cited (Backward Citations)
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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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |