Back to results
US 7,931,401 B2Granted
Temperature sensor
AssigneeStoneridge Control Devices, Inc.
InventorsRonald N. Landis, Robert J. Sparks, Jeffrey T. Norris
Life of this patent
Estimating the term…
Abstract
A temperature sensor including a housing and a temperature sensing element at least partially disposed in the housing. A particulate media, which may include a blend of differently sized particles, is disposed in the housing and at least partially surrounds the temperature sensing element. The particulate media may entrain oxygen to avoid a reducing atmosphere in said housing.
Claims8
A method of reducing degradation of a temperature sensor comprising:
- pre-oxidizing an interior surface of a housing;
- disposing a temperature sensing element in said housing;
- providing a particulate media in said housing and at least partially around said temperature sensing element, said particulate media providing an interstitial volume;
- and
- entraining and amount of oxygen in said interstitial volume sufficient to avoid a reducing atmosphere in said housing,
- wherein said particulate media comprises a blend of first particles and second particles, said second particles having a mesh size smaller than a mesh size of said first particles and wherein said interstitial volume is between said first particles and said second particles, and
- wherein said first and second particles comprises the same material.
4 more elements
Dependencies are inferred from the claim text.