US4280167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating room surgical lamp
Assignee: Individual
•
Filing: 1979-09-13
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Granted: 1981-07-21
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Expires: 1999-09-13
Abstract
Abstract An improved operating room surgical lamp having a concave reflector housing, an inverted conical reflector disposed therein and one or more circular fluorescent lamps disposed within the concave reflector and about the inverted conical reflector. The surgical lamp of the present invention provides an evenly illuminated light field having a centrally illuminated portion of even greater illumination.
Inventors
- 👤 Edwin W. Ellett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:14
CPC Classifications
F; F21; F21S; F21S8/00; A; A61; A61B; A61B90/00; A61B90/30; A61B90/36; F21V; F21V21/00; F21V21/40; F21V21/403; F21V7/00; F21V7/0008; F21W; F21W2131/00; F21W2131/20; F21W2131/205; F21Y; F21Y2103/00; F21Y2103/30; F21Y2103/33
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
147 words
An improved operating room surgical lamp comprising: a lamp housing having a mounting means thereon adaptable to be mounted with a suitable support; said lamp housing having an interior concave reflective surface, said lamp housing having a first closed end and a second open end, said concave reflective surface positioned to reflect light out said second open end to illuminate a desired area; a central reflective means mounted within said lamp housing at said closed end, said central reflective means having a reflective surface thereon to reflect light to a central position in the light field; and a tubular light source mounted within said lamp housing about said central reflective means for emitting light rays outwardly to reflect off of said interior concave reflective surface of said housing and for emitting light rays inwardly to reflect off of said central reflective means to illuminate a work area.
Claim 2
Dependent Claim
147 words
An improved operating room surgical lamp comprising: a lamp housing having a mounting means thereon adaptable to be mounted with a suitable support; said lamp housing having an interior concave reflective surface, said lamp housing having a first closed end and a second open end, said concave reflective surface positioned to reflect light out said second open end to illuminate a desired area; a central reflective means mounted within said lamp housing at said closed end, said central reflective means having a reflective surface thereon to reflect light to a central position in the light field; and a tubular light source mounted within said lamp housing about said central reflective means for emitting light rays outwardly to reflect off of said interior concave reflective surface of said housing and for emitting light rays inwardly to reflect off of said central reflective means to illuminate a work area.
Claim 3
Dependent Claim
14 words
The structure set forth in claim 1 wherein: said tubular light source is circular.
Claim 4
Dependent Claim
16 words
The structure set forth in claim 2 wherein: said tubular light source is of a fluorescent-type.
Claim 5
Dependent Claim
16 words
The structure set forth in claim 1 wherein: said central reflective means is circular in cross-section.
Claim 6
Dependent Claim
18 words
The structure set forth in claims 1 or 3 wherein: said central reflective means is an inverted cone.
Claim 7
Dependent Claim
18 words
The structure set forth in claims 1 or 3 wherein: said central reflective means is a frusto-conical section.
Claim 8
Dependent Claim
24 words
The structure set forth in claim 3 wherein: said tubular light source includes a plurality of fluorescent lights of equal overall diameter successively mounted.
Claim 9
Dependent Claim
28 words
The structure set forth in claim 3 wherein: said tubular light source includes a first fluorescent light and a second fluorescent light of greater overall diameter mounted thereunder.
Claim 10
Dependent Claim
37 words
The structure set forth in claim 1, wherein the improved operating room surgical lamp further comprises: a handle means operably mounted onto said central reflective means for positioning the light field over the area to be illuminated.
Claim 11
Dependent Claim
14 words
The structure set forth in claim 9 wherein: said handle means is detachably mounted.
Claim 12
Dependent Claim
52 words
The structure set forth in claim 1, wherein: said tubular light source, said central reflective means and said interior concave reflective surface cooperating to provide that light reflected off of said central reflective means forms a central spot of a higher intensity than light reflected off of said interior concave reflected surface.
References Cited (Backward Citations)
US2896066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |