US3267274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television and film studio lamp
Assignee: Mole Richardson England Ltd
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Filing: 1963-11-26
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Granted: 1966-08-16
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Johnson Samuel Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; F; F21; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
STUDIO LAMP ADAPTABLE FOR USE ALTERNATIVELY AS A FLOOD LAMP OR A SPOT LAMP COMPRISING A BOWL REFLECTOR HAVING AN APERTURE IN THE BACK THEREOF, A LENS CLOSE TO THE APERTURE IN THE BACK OF THE BOWL AND POSITIONED TO TRANSMIT LIGHT PASSING OUT OF THE BOWL BY WAY OF THE SAID APERTURE, A LAMP HOLDER FOR SUPPORTING A LAMP BULB WITHIN THE BOWL REFLECTOR ON THE AXIS OF THE LENS, A CONCAVE MIRROR ON THE OPPOSITE SIDE OF THE BULB TO THE LENS WHICH DIRECTS LIGHT FROM THE BULB TOWARDS THE LENS, A DIFFUSING BOWL, AND A MOVABLE SUPPORT MEANS FOR THE DIFFUSING BOWL, THE BOWL BEING MOVABLE FROM A POSITION BETWEEN THE LAMP BULB AND THE LENS, WHICH IT OCCUPIES WHEN THE LAMP IS ADAPTED TO BE USED AS A FLOOD LAMP, TO A POSITION WHERE THE PASSAGE OF LIGHT FROM THE CONCAVE MIRROR TO THE LENS IS UNOBSTRUCTED THEREBY, WHEN THE LAMP IS ADAPTED TO BE USED AS A SPOT LAMP.
Claim 2
Dependent Claim
164 words
STUDIO LAMP ADAPTABLE FOR USE ALTERNATIVELY AS A FLOOD LAMP OR A SPOT LAMP COMPRISING A BOWL REFLECTOR HAVING AN APERTURE IN THE BACK THEREOF, A LENS CLOSE TO THE APERTURE IN THE BACK OF THE BOWL AND POSITIONED TO TRANSMIT LIGHT PASSING OUT OF THE BOWL BY WAY OF THE SAID APERTURE, A LAMP HOLDER FOR SUPPORTING A LAMP BULB WITHIN THE BOWL REFLECTOR ON THE AXIS OF THE LENS, A CONCAVE MIRROR ON THE OPPOSITE SIDE OF THE BULB TO THE LENS WHICH DIRECTS LIGHT FROM THE BULB TOWARDS THE LENS, A DIFFUSING BOWL, AND A MOVABLE SUPPORT MEANS FOR THE DIFFUSING BOWL, THE BOWL BEING MOVABLE FROM A POSITION BETWEEN THE LAMP BULB AND THE LENS, WHICH IT OCCUPIES WHEN THE LAMP IS ADAPTED TO BE USED AS A FLOOD LAMP, TO A POSITION WHERE THE PASSAGE OF LIGHT FROM THE CONCAVE MIRROR TO THE LENS IS UNOBSTRUCTED THEREBY, WHEN THE LAMP IS ADAPTED TO BE USED AS A SPOT LAMP.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |