US 12,104,998 B2
Device for measuring property changes via in-situ micro-viscometry
Jonathan E. Spowart, Beavercreek, OH (US); Colin Rowbottom, Englewood, FL (US); Carly S. Hauser, Ripley, OH (US); and Eric A. Lindgren, Beavercreek, OH (US)
Assigned to United States of America as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US)
Filed by Government of the United States, as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US)
Filed on Mar. 23, 2022, as Appl. No. 17/702,220.
Application 17/702,220 is a continuation in part of application No. 16/547,646, filed on Aug. 22, 2019, granted, now 11,313,778.
Claims priority of provisional application 62/859,401, filed on Jun. 10, 2019.
Prior Publication US 2022/0214256 A1, Jul. 7, 2022
Int. Cl. G01N 11/00 (2006.01); G01N 11/14 (2006.01); G01N 11/16 (2006.01)
CPC G01N 11/00 (2013.01) [G01N 11/16 (2013.01); G01N 2011/0086 (2013.01); G01N 2011/147 (2013.01)] 11 Claims
OG exemplary drawing
 
1. 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.