US3870873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Environmental chamber
Assignee: MBR CORP
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Filing: 1973-06-29
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Granted: 1975-03-11
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Expires: 1993-06-29
Abstract
Abstract An environmental chamber wherein conditions of temperature, humidity, and daylight are simulated to most nearly approximate conditions found in nature. The chamber uses an Xenon lamp as a light source to closely simulate natural sunlight. Within the chamber, light from the Xenon lamp is changeably filtered so as to produce light conditions that nearly approximate the varying sun conditions which exist throughout a typical normal day at a particular location. Temperature and humidity are controlled by air conditioning and heating systems that are programmed to produce atmospheric conditions within the chamber in simulation of actual environmental conditions.
Inventors
- 👤 Roy E Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:43
CPC Classifications
F; F24; F24F; F24F5/00; A; A01; A01G; A01G9/00; A01G9/24; A01G9/246; A01K; A01K1/00; A01K1/02; A01K1/03; A01K1/031; F21; F21V; F21V9/00; F21V9/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10S; Y10S47/00; Y10S47/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
186 words
An environmental cHamber comprising an enclosure having a top having a reflective inner surface; a bottom; end walls interconnecting said top and said bottom; side walls interconnecting said top, bottom, and end walls; an Xenon lamp having a spectrum closely approaching that of natural daylight positioned close to and beneath the top; a reflector positioned between the lamp and the top whereby the reflector and the top reflect light from the lamp uniformly throughout the enclosure such that uniform energy levels are maintained at constant distances from the lamp within the enclosure; circuit means connecting said Xenon lamp to a source of electricity; means for continuously circulating a liquid coolant around the Xenon lamp; filter means comprising a plurality of filters of different degrees opaqueness positioned below the Xenon lamp and above the bottom; and means for positioning said filter means to stretch substantially between the end and side walls, said means comprising programming means to selectively position the filters whereby the light spectrum at the side of the filters opposite the Xenon lamp can be varied as necessary to correspond to changing natural daylight spectrum.
Claim 2
Dependent Claim
186 words
An environmental cHamber comprising an enclosure having a top having a reflective inner surface; a bottom; end walls interconnecting said top and said bottom; side walls interconnecting said top, bottom, and end walls; an Xenon lamp having a spectrum closely approaching that of natural daylight positioned close to and beneath the top; a reflector positioned between the lamp and the top whereby the reflector and the top reflect light from the lamp uniformly throughout the enclosure such that uniform energy levels are maintained at constant distances from the lamp within the enclosure; circuit means connecting said Xenon lamp to a source of electricity; means for continuously circulating a liquid coolant around the Xenon lamp; filter means comprising a plurality of filters of different degrees opaqueness positioned below the Xenon lamp and above the bottom; and means for positioning said filter means to stretch substantially between the end and side walls, said means comprising programming means to selectively position the filters whereby the light spectrum at the side of the filters opposite the Xenon lamp can be varied as necessary to correspond to changing natural daylight spectrum.
Claim 3
Dependent Claim
186 words
An environmental cHamber comprising an enclosure having a top having a reflective inner surface; a bottom; end walls interconnecting said top and said bottom; side walls interconnecting said top, bottom, and end walls; an Xenon lamp having a spectrum closely approaching that of natural daylight positioned close to and beneath the top; a reflector positioned between the lamp and the top whereby the reflector and the top reflect light from the lamp uniformly throughout the enclosure such that uniform energy levels are maintained at constant distances from the lamp within the enclosure; circuit means connecting said Xenon lamp to a source of electricity; means for continuously circulating a liquid coolant around the Xenon lamp; filter means comprising a plurality of filters of different degrees opaqueness positioned below the Xenon lamp and above the bottom; and means for positioning said filter means to stretch substantially between the end and side walls, said means comprising programming means to selectively position the filters whereby the light spectrum at the side of the filters opposite the Xenon lamp can be varied as necessary to correspond to changing natural daylight spectrum.
Claim 4
Dependent Claim
186 words
An environmental cHamber comprising an enclosure having a top having a reflective inner surface; a bottom; end walls interconnecting said top and said bottom; side walls interconnecting said top, bottom, and end walls; an Xenon lamp having a spectrum closely approaching that of natural daylight positioned close to and beneath the top; a reflector positioned between the lamp and the top whereby the reflector and the top reflect light from the lamp uniformly throughout the enclosure such that uniform energy levels are maintained at constant distances from the lamp within the enclosure; circuit means connecting said Xenon lamp to a source of electricity; means for continuously circulating a liquid coolant around the Xenon lamp; filter means comprising a plurality of filters of different degrees opaqueness positioned below the Xenon lamp and above the bottom; and means for positioning said filter means to stretch substantially between the end and side walls, said means comprising programming means to selectively position the filters whereby the light spectrum at the side of the filters opposite the Xenon lamp can be varied as necessary to correspond to changing natural daylight spectrum.
References Cited (Backward Citations)
US2725461A
Cited
US2798942A
Cited
US3202811A
Cited
US3334217A
Cited
US3355982A
Cited
US3382024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |