USH229H
Expired / Lapsed
US
⏱️ 0.0 years remaining
Environmental test chamber
Assignee: David E. Phillips
•
Filing: 1984-07-20
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Granted: 1987-03-03
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Expires: 2004-07-20
Abstract
Abstract A test chamber for simulating outdoor environmental conditions including the controlled formation of dew or frost on test objects in the chamber. Air processing equipment connected to the chamber includes two types of humidifying equipment, two types of de-humidifying apparatus, and a heating/cooling system using a secondary heating/cooling fluid which heats and/or cools the air without condensation. A radiative cooling system comprising a chilled black body absorbs heat from test objects to induce dew or frost formation. The equipment is controlled by a microprocessor.
Inventors
- 👤 David E. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:12
CPC Classifications
G; G01; G01N; G01N17/00; F; F24; F24F; F24F11/00; F24F11/30; F24F11/62; F24F11/63; G01N17/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A test device for simulating outdoor environmental conditions including the controlled formation of precipitation in the form of dew and frost upon test objects located within the device comprising: a walk-in chamber containing test objects and an entrance door; air processing equipment associated with said chamber for controlling the air temperature and humidity within said chamber; a chilled heat absorbing block body heat sink located in the ceiling of said chamber; means for controlling said air processing equipment; and means for controlling the temperature of said heat sink, whereby dew or frost may be controllably formed on the test objects by controlling the temperature and humidity of the air inside said chamber in conjunction with controlling the temperature of said heat sink.
Claim 2
Dependent Claim
122 words
A test device for simulating outdoor environmental conditions including the controlled formation of precipitation in the form of dew and frost upon test objects located within the device comprising: a walk-in chamber containing test objects and an entrance door; air processing equipment associated with said chamber for controlling the air temperature and humidity within said chamber; a chilled heat absorbing block body heat sink located in the ceiling of said chamber; means for controlling said air processing equipment; and means for controlling the temperature of said heat sink, whereby dew or frost may be controllably formed on the test objects by controlling the temperature and humidity of the air inside said chamber in conjunction with controlling the temperature of said heat sink.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |