US 11,869,710 B2
Magnetic sensing system for a rotary control device
Alexander Wade Gage, Villanova, PA (US); Stephen M. Ludwig, Jr., Coopersburg, PA (US); Robert C Newman, Jr., Emmaus, PA (US); and William Taylor Shivell, Breinigsville, PA (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Dec. 22, 2022, as Appl. No. 18/086,866.
Application 18/086,866 is a continuation of application No. 17/691,185, filed on Mar. 10, 2022, granted, now 11,574,754.
Application 17/691,185 is a continuation of application No. 16/902,891, filed on Jun. 16, 2020, granted, now 11,309,111, issued on Apr. 19, 2022.
Application 16/902,891 is a continuation of application No. 15/631,459, filed on Jun. 23, 2017, granted, now 10,720,274, issued on Jul. 21, 2020.
Claims priority of provisional application 62/356,989, filed on Jun. 30, 2016.
Prior Publication US 2023/0131496 A1, Apr. 27, 2023
Int. Cl. H01F 7/02 (2006.01); H02K 11/215 (2016.01); H03K 17/97 (2006.01); G01R 33/07 (2006.01); G01D 5/245 (2006.01); H03K 17/95 (2006.01); G01R 33/00 (2006.01)
CPC H01F 7/0205 (2013.01) [G01R 33/07 (2013.01); H01F 7/0273 (2013.01); H02K 11/215 (2016.01); H03K 17/97 (2013.01); G01D 5/2451 (2013.01); G01R 33/0005 (2013.01); H03K 2017/9527 (2013.01); H03K 2017/9713 (2013.01); H03K 2217/94068 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A control device comprising:
a moving portion;
a magnetic element coupled to the moving portion, the magnetic element comprising alternating positive and negative sections configured to generate a magnetic field in a first direction;
at least one magnetic sensing circuit responsive to magnetic fields in a second direction that is angularly offset from the first direction; and
at least one magnetic flux pipe structure configured to conduct the magnetic field generated by the magnetic element and redirect the magnetic field towards the at least one magnetic sensing circuit in the second direction, wherein the at least one magnetic flux pipe structure comprises a mounting portion, a magnetic element coupling portion, and a sensor coupling portion, and wherein the magnetic element coupling portion and the sensor coupling portion are located at opposite ends of the at least one magnetic flux pipe structure, and wherein the mounting portion is attached to a printed circuit board of the control device, and wherein the magnetic element coupling portion is positioned adjacent to the magnetic element and located in a notch in the printed circuit board.