US 11,920,333 B2
Magnetic position sensor for aircraft toilet flush valve
Robert G. Ratliff, Buena Park, CA (US); David Beach, Los Alamitos, CA (US); and Steven Schwartz, Long Beach, CA (US)
Assigned to MAG Aerospace Industries, LLC, Carson, CA (US)
Appl. No. 17/441,530
Filed by MAG Aerospace Industries, LLC, Carson, CA (US)
PCT Filed Mar. 20, 2020, PCT No. PCT/US2020/023845
§ 371(c)(1), (2) Date Sep. 21, 2021,
PCT Pub. No. WO2020/191288, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/821,662, filed on Mar. 21, 2019.
Prior Publication US 2022/0170252 A1, Jun. 2, 2022
Int. Cl. E03D 1/34 (2006.01); B64D 11/02 (2006.01); E03D 5/02 (2006.01); F16K 37/00 (2006.01); G01D 5/14 (2006.01)
CPC E03D 1/34 (2013.01) [B64D 11/02 (2013.01); E03D 5/024 (2013.01); F16K 37/0041 (2013.01); G01D 5/145 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A sensing system for a vacuum flush waste system, comprising:
a flush valve plate positioned within a housing, the flush valve plate having a rotational shaft and a port, the housing having a waste opening;
a magnet positioned on a centerline of an axis of rotation of the rotational shaft; and
a magnet position sensor positioned coaxially to the axis of rotation of the rotational shaft and adjacent to the magnet and configured to sense the absolute position of the magnet, wherein the sensing system senses an absolute position of the magnet in order to relay information about a location of the port with respect to the waste opening.