US 12,241,445 B2
Hybrid triboelectric and electromagnetic generator
Changyong Cao, Okemos, MI (US); and Yaokun Pang, East Lansing, MI (US)
Assigned to Board of Trustees of Michigan State University, East Lansing, MI (US)
Filed by Board of Trustees of Michigan State University, East Lansing, MI (US)
Filed on Mar. 29, 2022, as Appl. No. 17/706,860.
Claims priority of provisional application 63/170,639, filed on Apr. 5, 2021.
Prior Publication US 2022/0316439 A1, Oct. 6, 2022
Int. Cl. F03B 13/16 (2006.01); H02N 1/04 (2006.01)
CPC F03B 13/16 (2013.01) [H02N 1/04 (2013.01); F05B 2220/706 (2013.01)] 20 Claims
OG exemplary drawing
 
10. A power generator apparatus comprising: (a) a housing being elongated in a longitudinal direction between end walls thereof; (b) multiple, longitudinally spaced apart and annular first electrodes affixed to the housing; (c) multiple, longitudinally spaced apart and movable second electrodes located within a hollow space internal to the first electrodes; (d) multiple magnets being moveable within the hollow space, the magnets being laterally spaced apart from each other; (e) at least one spring biasing the magnets relative to the end walls of the housing; (f) a plate transversely extending within the housing and being located within the hollow space, magnets attached to and moveable with the plate; (g) a cylindrically shaped collar mounted to an edge of the plate, the collar and plate longitudinally moving together within the housing; and (h) the second electrodes and the magnets being linearly movable together along the longitudinal direction in response to movement of the housing, which are configured to generate both triboelectric and electromagnetic energy due to the movement.