US3746080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Environmental chamber
Assignee: Mallory Engineering Inc
•
Filing: 1971-04-07
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Granted: 1973-07-17
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Expires: 1991-04-07
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
- 👤 R Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:45
CPC Classifications
A; A01; A01G; A01G7/00; A01G7/04; A01G7/045; F; F24; F24F; F24F5/00; A01G9/00; A01G9/24; A01G9/249; A01K; A01K1/00; A01K1/02; A01K1/03; A01K1/031; Y; Y02; Y02P; Y02P60/00; Y02P60/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
An environmental chamber comprising an enclosure having a top; a bottom; end walls interconnecting said top and said bottom; side walls interconnecting said top, bottom, and end walls; a light generating source producing light having a spectrum closely approaching that of natural daylight positioned close to and beneath the top; circuit means connecting said light generating source to a source of electricity filter means below the light generating means and above the bottom; means for positioning said filter means to stretch substatnially between the end and side walls; air conditioning means having mEans for circulating air through the chamber above and below the filter means, means for heating the circulated air, means for cooling the circulated air, and means for adding moisture to the air; and means, including a control panel on the chamber for establishing air temperature, and humidity in the chamber.
Claim 2
Dependent Claim
143 words
An environmental chamber comprising an enclosure having a top; a bottom; end walls interconnecting said top and said bottom; side walls interconnecting said top, bottom, and end walls; a light generating source producing light having a spectrum closely approaching that of natural daylight positioned close to and beneath the top; circuit means connecting said light generating source to a source of electricity filter means below the light generating means and above the bottom; means for positioning said filter means to stretch substatnially between the end and side walls; air conditioning means having mEans for circulating air through the chamber above and below the filter means, means for heating the circulated air, means for cooling the circulated air, and means for adding moisture to the air; and means, including a control panel on the chamber for establishing air temperature, and humidity in the chamber.
Claim 3
Dependent Claim
19 words
An environmental chamber as in claim 1, wherein the filter means comprises a rolled screen of partially opaque material.
Claim 4
Dependent Claim
52 words
An environmental chamber as in claim 2, wherein the means for positioning the screen comprises a spring-type reel on which the screen is wound, a take-up reel at least one cable connecting an end of the screen and the take-up reel and a reversible motor arranged to reversibly drive the take-up reel.
Claim 5
Dependent Claim
62 words
An environmental chamber as in claim 3, wherein the filter means comprises a plurality of filters of different degrees opaqueness; and the means for positioning said filter means comprises programming means to selectively position the filters whereby the lgiht spectrum at the side of the filters opposite the light generating source can be varied as necessary to coorrespond to natural daylight spectrum.
Claim 6
Dependent Claim
20 words
An environmental chamber as in claim 4, wherein the plurality of filters are continuously connected to form the roller screen.
Claim 7
Dependent Claim
25 words
An environmental chamber as in claim 4, wherein at least some of the filters are arranged to be stretched in layers beneath the Xenon lamp.
Claim 8
Dependent Claim
16 words
An environmental chamber as in claim 1, wherein the light generating source is an Xenon lamp.
Claim 9
Dependent Claim
19 words
An environmental chamber as in claim 7, further including means for continuously circulating a coolant around the Xenon lamp.
Claim 10
Dependent Claim
62 words
An environmental chamber as in claim 1, wherein the filter means comprises a plurality of filters of different degrees opaqueness; and the means for positioning said filter means comrpises programming means to selectively position the filters whereby the light spectrum at the side of the filters opposite the light generating source can be varied as necessary to correspond to natural daylight spectrum.
References Cited (Backward Citations)
US3366165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |