Patent US4300187A successfully refreshed from Google Patents.
US4300187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable floodlight reflector
Assignee: General Electric Co
•
Filing: 1979-12-17
•
Granted: 1981-11-10
•
Expires: 1999-12-17
Abstract
Abstract Floodlight has a reflector mounted for selective adjustment to different positions relative to the light source for providing desired light distribution.
Inventors
- 👤 Thomas A. Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:45
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A floodlight comprising, in combination, a housing having a rear wall and side walls defining an interior chamber and a front opening, said rear wall of said housing having different portions arranged at different distances from said front opening, a reflector fitting within said housing chamber and having a rear portion arranged adjacent said housing rear wall, said reflector being selectively positioned in said housing with its rear portion resting alternatively on one of said different portions of said housing rear wall, means for securing said reflector in selected position, and means for mounting a light source in said housing between said reflector and said front opening, whereby said reflector is adjustable to different positions relative to the light source for varying the light distribution of the floodlight.
Claim 2
Dependent Claim
128 words
A floodlight comprising, in combination, a housing having a rear wall and side walls defining an interior chamber and a front opening, said rear wall of said housing having different portions arranged at different distances from said front opening, a reflector fitting within said housing chamber and having a rear portion arranged adjacent said housing rear wall, said reflector being selectively positioned in said housing with its rear portion resting alternatively on one of said different portions of said housing rear wall, means for securing said reflector in selected position, and means for mounting a light source in said housing between said reflector and said front opening, whereby said reflector is adjustable to different positions relative to the light source for varying the light distribution of the floodlight.
Claim 3
Dependent Claim
30 words
A floodlight as defined in claim 1, said different housing portions comprising a pair of spaced projections of different length extending from said housing rear wall toward said front opening.
Claim 4
Dependent Claim
11 words
A floodlight as defined in claim 2, said reflector being concave.
Claim 5
Dependent Claim
24 words
A floodlight as defined in claim 3, said rear reflector portion having a pair of spaced apertures in register with said spaced housing projections.
Claim 6
Dependent Claim
84 words
A floodlight as defined in claim 4, said reflector rear portion having an extension at one side, said housing having ledge means adjacent its rear wall, said reflector in one of said positions resting at its rear portion on the shorter of said housing projections and engaging at least certain of said housing side walls, said reflector in another of said positions resting at its rear portion on the longer of said housing projections and said extension thereof resting on said housing ledge means.
Claim 7
Dependent Claim
46 words
A floodlight as defined in claim 1, said reflector being substantially of parabolic form, the light source in one of said reflector positions being approximately at the focus of said parabolic reflector and in another of said reflector positions being substantially spaced from said focus thereof.
Claim 8
Dependent Claim
25 words
A floodlight as defined in claim 4, one of said spaced reflector apertures being sufficiently large to clear the longer of said spaced housing projections.
Claim 9
Dependent Claim
66 words
A floodlight as defined in claim 3, said reflector having opposite main walls and opposite side walls, said mounting means comprising lamp socket means arranged in said housing rearward of said reflector side walls, said reflector side walls formed with apertures for passage of the ends of an elongated lamp therethrough, said apertures formed to clear the lamp ends in said different positions of said reflector.
References Cited (Backward Citations)
US3316398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |