US 12,142,979 B2
Multi-layer printed coil arrangement having variable-pitch printed coils
Edward A. Neff, Carlsbad, CA (US); Toan Vu, Carlsbad, CA (US); and Vinh Hoang, Carlsbad, CA (US)
Assigned to Systems, Machines, Automation Components Corporation, Carlsbad, CA (US)
Filed by Systems, Machines, Automation Components Corporation, Carlsbad, CA (US)
Filed on Mar. 3, 2023, as Appl. No. 18/178,427.
Application 18/178,427 is a division of application No. 17/170,759, filed on Feb. 8, 2021, granted, now 11,804,745.
Claims priority of provisional application 62/971,848, filed on Feb. 7, 2020.
Prior Publication US 2023/0216361 A1, Jul. 6, 2023
Int. Cl. H02K 3/04 (2006.01); H02K 5/04 (2006.01); H02K 7/00 (2006.01); H02K 15/04 (2006.01); H02P 25/03 (2016.01)
CPC H02K 3/04 (2013.01) [H02K 5/04 (2013.01); H02K 7/003 (2013.01); H02K 15/0407 (2013.01); H02P 25/03 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A direct drive brushless motor, comprising:
a plurality of rotational components including a center rotation shaft circumscribed by a plurality of coils and a coil termination plate configured to support the plurality of coils, the plurality of coils including a plurality of printed coils arranged in multiple coil rollers wound around a bobbin wherein a first pitch of a first set of the plurality of printed coils included within a first of the multiple coil rollers is different from a second pitch of a second set of the plurality of coil rollers included within a second of the multiple coil rollers, wherein the plurality of coils are formed with a flexible circuit material configured as a three-phase coil circuit in which the phases are controlled by electrical signals applied to three terminals;
a plurality of non-rotational components including a plurality of inner magnets and a plurality of outer magnets wherein the plurality of outer magnets are positioned around the plurality of coils; and
a flex cable having one or more leads for providing electrical current to one or more of the plurality of coils without using brushes.