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US 6,889,179 B2Granted
Method of simulating environmental exposure
AssigneeCarrier Corporation
InventorsXiaoyuan Chang, Sandra Jayne Downey
Life of this patent
Estimating the term…
Abstract
An environmental simulation test utilizes various temperatures and exposure times while exposing a test item to wet and dry conditions. In one example a marine environment where there is some pollution is simulated using a 24 hour test cycle that may be repeated as many days as necessary. The test cycle includes spraying a solution onto a test item and then cyclically exposing the test item to dry and humidified conditions.
Claims15
A method of simulating environmental exposure of an item, comprising the steps of:
- (A) wetting the item with a solution when the item is at a first temperature for a first length of time;
- (B) drying the item for a second length of time that is less than the first length at a second temperature that is higher than the first temperature;
- (C) drying the item for a third length of time that is less than the second length at a third temperature that is lower than the second temperature and higher than the first temperature;
- (D) humidifying the item when the item is at the third temperature for the first length of time;
- (E) drying the item for the second length of time at a fourth temperature that is higher than the second temperature;
- (F) repeating steps (C) and (D) after performing step (E);
- and
- (G) drying the item at the first temperature for a fourth length of time that is less than the second length of time and greater than the third length of time.
5 more elements
A method of simulating environmental exposure of an item, comprising the steps of:
- (A) wetting the item with a solution at about 35° C. for about 3 hours;
- (B) drying the item for about 1 hour and 45 minutes at about 55° C.;
- (C) drying the item for about 15 minutes at about 50° C.;
- (D) humidifying the item at about 50° C. for about 3 hours;
- (E) drying the item for about 1 hour and 45 minutes at about 60° C.;
- (F) repeating steps (C) through (E) sequentially twice;
- (G) repeating steps (C) and (D) each once after performing step (F);
- and
- (H) drying the item at about 35° C. for about 1 hour.
6 more elements
Dependencies are inferred from the claim text.