US 12,445,029 B2
Linear electromagnetic machine with a stator having stator teeth arranged to provide an anti-clocking force
John Lawler, Portland, OR (US); John Powers, Menlo Park, CA (US); Scott Coakley, Belmont, CA (US); Alan Crapo, San Jose, CA (US); David DeGraaff, Mountain View, CA (US); Christopher David Gadda, Palo Alto, CA (US); Andrew Hancock, Fremont, CA (US); Shannon Miller, Belmont, CA (US); Samuel Sherman, San Francisco, CA (US); Matthew Svrcek, Redwood City, CA (US); and Kevin Walters, Redwood City, CA (US)
Assigned to Mainspring Energy, Inc., Menlo Park, CA (US)
Filed by MAINSPRING ENERGY, INC., Menlo Park, CA (US)
Filed on Feb. 22, 2023, as Appl. No. 18/112,634.
Application 18/112,634 is a continuation of application No. 17/226,582, filed on Apr. 9, 2021, granted, now 11,616,428.
Application 17/226,582 is a continuation of application No. 16/521,541, filed on Jul. 24, 2019, granted, now 10,985,641, issued on Apr. 20, 2021.
Claims priority of provisional application 62/703,338, filed on Jul. 25, 2018.
Claims priority of provisional application 62/702,860, filed on Jul. 24, 2018.
Prior Publication US 2023/0198367 A1, Jun. 22, 2023
Int. Cl. H02K 7/08 (2006.01); F02B 71/04 (2006.01); F16C 32/06 (2006.01); H02K 7/18 (2006.01); H02K 33/18 (2006.01)
CPC H02K 33/18 (2013.01) [F02B 71/04 (2013.01); F16C 32/0603 (2013.01); H02K 7/08 (2013.01); H02K 7/1884 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A stator for a linear electromagnetic machine, the stator comprising:
a plurality of winding hoops constrained and fixedly aligned, wherein:
each winding hoop of the plurality of winding hoops engages with a respective set of stator teeth of a plurality of sets of stator teeth,
at least one set of stator teeth of the plurality of sets of stator teeth comprises a first azimuthal gap between adjacent stator teeth of the at least one set of stator teeth,
a translator of the linear electromagnetic machine comprises a second azimuthal gap, and
an interaction between the first azimuthal gap and the second azimuthal gap provides an anti-clocking force on the translator that acts against azimuthal rotation of the translator relative to the stator.