Patent US4380794A successfully refreshed from Google Patents.
US4380794A
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US
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Surgical lamp characterized by having an improved reflector
Assignee: Raytheon Co
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Filing: 1981-06-15
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Granted: 1983-04-19
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Expires: 2001-06-15
Abstract
Abstract A surgical lamp includes a thermoplastic reflector which reflects visible light but passes infrared radiation. The reflector is fabricated from molded polyetherimide plastic resin. A dichroic coating is vacuum deposit directly upon the front surface of the reflector.
Inventors
- 👤 Alfred C. Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:28
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/04; F21V7/00; F21V7/22; F21V7/24; F21V7/28; F21W; F21W2131/00; F21W2131/20; F21W2131/205; Y; Y10; Y10S; Y10S362/00; Y10S362/804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
An improved surgical lamp of the type having a broad spectrum light source which emits ultraviolet, visible and infrared light and a reflector, wherein the improvement is comprised of: (a) a reflector blank molded from polyetherimide resin; and (b) a dichroic coating deposited directly upon the front surface of said reflector blank for reflecting visible light while passing infrared light.
Claim 2
Dependent Claim
60 words
An improved surgical lamp of the type having a broad spectrum light source which emits ultraviolet, visible and infrared light and a reflector, wherein the improvement is comprised of: (a) a reflector blank molded from polyetherimide resin; and (b) a dichroic coating deposited directly upon the front surface of said reflector blank for reflecting visible light while passing infrared light.
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) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |