US 12,240,423 B2
Vehicle braking
Nishant Girish Elkunchwar, Pleasanton, CA (US); Zachary Meyer Omohundro, Hermosa Beach, CA (US); Karan Kaushik, Fremont, CA (US); Uriel Aparacido Rosa, Santa Clara, CA (US); and Caspar Vik Hendrickson, San Francisco, CA (US)
Assigned to Zimeno Inc., Livermore, CA (US)
Filed by Zimeno Inc., Livermore, CA (US)
Filed on Dec. 23, 2023, as Appl. No. 18/395,507.
Application 18/395,507 is a continuation in part of application No. 18/164,540, filed on Feb. 3, 2023, granted, now 11,865,913.
Claims priority of provisional application 63/306,656, filed on Feb. 4, 2022.
Prior Publication US 2024/0123951 A1, Apr. 18, 2024
Int. Cl. F16H 47/04 (2006.01); B60K 17/354 (2006.01); B60K 17/356 (2006.01); B60T 1/06 (2006.01); B60T 1/087 (2006.01); B60T 8/171 (2006.01); B60T 8/1761 (2006.01); B60T 8/88 (2006.01)
CPC B60T 1/062 (2013.01) [B60K 17/354 (2013.01); B60K 17/356 (2013.01); B60T 1/087 (2013.01); B60T 8/171 (2013.01); B60T 8/17616 (2013.01); B60T 8/885 (2013.01); F16H 47/04 (2013.01); B60T 2240/00 (2013.01); B60T 2250/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle comprising:
rear ground traction members;
front ground traction members;
a rear drive system to drive the rear ground traction members;
a continuously variable speed front drive system to drive the front ground traction members and comprising:
a hydraulic pump;
a hydraulic motor driven by the hydraulic pump and operably coupled to the front ground traction members by a planetary gear assembly, the planetary gear assembly comprising:
a sun gear coupled to and driven by the hydraulic motor;
a ring gear operably coupled to the rear ground traction members; and
a planet carrier carrying planet gears intermeshing between the ring gear and the sun gear, the planet carrier having an output shaft operably coupled to the front ground traction members to drive the front ground traction members;
at least one sun brake actuatable to retard rotation of the sun gear, and
a controller to:
actuate the at least one sun brake to retard rotation of the sun gear.