US 11,749,437 B2
Pumps and hardware for organ-on-chip platforms
Brij Mohan Bhushan, Cambridge, MA (US); Daniel R. Rathbone, Somerville, MA (US); David L. Trumper, Plaistow, NH (US); Minkyun Noh, Cambridge, MA (US); and Jun Young Yoon, Cambridge, MA (US)
Assigned to MASSACHUSETTS INSTITUTE OF TECHNOLOGY, Cambridge, MA (US)
Filed by Massachusetts Institute of Technology, Cambridge, MA (US)
Filed on May 1, 2019, as Appl. No. 16/400,840.
Claims priority of provisional application 62/665,348, filed on May 1, 2018.
Prior Publication US 2019/0338230 A1, Nov. 7, 2019
Int. Cl. H01F 7/14 (2006.01); B01L 3/00 (2006.01); B01L 9/00 (2006.01); C12M 3/00 (2006.01); C12M 3/06 (2006.01); C12M 1/00 (2006.01); F04B 43/04 (2006.01); F04B 43/14 (2006.01)
CPC H01F 7/14 (2013.01) [B01L 3/50273 (2013.01); B01L 3/502707 (2013.01); B01L 3/502715 (2013.01); B01L 3/502753 (2013.01); B01L 9/527 (2013.01); C12M 21/08 (2013.01); C12M 23/16 (2013.01); C12M 29/00 (2013.01); F04B 43/043 (2013.01); F04B 43/14 (2013.01); B01L 2200/025 (2013.01); B01L 2200/027 (2013.01); B01L 2200/10 (2013.01); B01L 2300/123 (2013.01); B01L 2400/043 (2013.01); B01L 2400/0415 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A low power consumption electromagnetic actuator comprising
a) a stator body comprising at least one set of two protruding legs and a connecting segment connecting the at least one set of two protruding legs and having a vertical and a horizontal axis of symmetry,
b) at least two permanent magnets attached to the stator body,
c) a winding coil around the connecting segment,
d) at least one flexure positioned between at least two pole faces,
wherein the at least one flexure is formed of a material having a stiffness and a strain range sufficient for permitting rotor rotation or mover movement, formed of a material with a Young's modulus less than the Young's modulus of aluminum, and
e) a rotor or mover comprising at least two opposing regions, the rotor contacting the at least one flexure, and
a contact spring connected to the rotor or the mover for transfer to and storage of energy in the contact spring,
wherein each permanent magnet forms a pole face on the stator body about the site of its attachment and on one end of the flexure and not within a primary magnetic flux path.