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US 12,104,998 B2Granted
Device for measuring property changes via in-situ micro-viscometry
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsJonathan E. Spowart, Colin Rowbottom, Carly S. Hauser, Eric A. Lindgren
Life of this patent
Estimating the term…
Abstract
The present invention relates to devices for measuring property changes via in-situ micro-viscometry and methods of using same. The aforementioned device is inexpensive and can be used to quickly and accurately measure numerous physical and chemical property changes, including but not limited to the rate of chemical cure, change in tack, and rate of mass loss, for example, rate of moisture, solvent and/or plasticizer change.
Claims11
A device said device comprising an actuator and a sensor:
- a) said sensor comprising a frame, a magnet, a coil having an electrical connection and a membrane having a periphery, said magnet, coil and membrane being disposed in said frame, said membrane being further physically connected to said frame at said membrane's periphery, said coil being concentric to said magnet but not in physical contact with said magnet, said coil being bonded to said membrane said membrane not being in physical contact with said magnet, said magnet being attached to said frame opposite of said membrane;
- b) said, actuator comprising a frame, a magnet, a coil having an electrical connection and a membrane having a periphery, said membrane being further physically connected to said frame at said membrane's periphery said coil being concentric to said magnet but not in physical contact with said magnet, said coil being bonded to said membrane, said membrane not being in physical contact with said magnet, said magnet being attached to said frame opposite of said membrane;
- said sensor's magnet and said actuator's magnet having opposite polarities or sensor's magnet and said actuator's magnet having the same polarities, when said sensor's magnet and said actuator's magnet have the same polarities said device further comprising a fixture in which said sensor and said actuator are disposed, said sensor and said actuator being electrically isolated.
Dependencies are inferred from the claim text.