US 12,071,332 B2
Systems and methods for leveling and oscillation control of a lift device
Ignacy Puszkiewicz, Hagerstown, MD (US); and Gregory S. Brulo, Oshkosh, WI (US)
Assigned to Oshkosh Corporation, Oshkosh, WI (US)
Filed by Oshkosh Corporation, Oshkosh, WI (US)
Filed on Mar. 29, 2023, as Appl. No. 18/127,921.
Claims priority of provisional application 63/329,549, filed on Apr. 11, 2022.
Prior Publication US 2023/0322537 A1, Oct. 12, 2023
Int. Cl. B66F 9/075 (2006.01); B60G 9/02 (2006.01); B66F 11/04 (2006.01); B66F 13/00 (2006.01)
CPC B66F 9/07513 (2013.01) [B60G 9/02 (2013.01); B66F 9/0755 (2013.01); B66F 9/07559 (2013.01); B66F 11/046 (2013.01); B66F 13/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A leveling system for a lift device, the leveling system comprising:
an axle configured to rotatably couple with one or more tractive elements;
a pin extending through a bore of the axle;
a cradle pivotally coupled with the pin; and
a chassis pivotally coupled with the pin, the chassis comprising a first actuator and a second actuator, wherein the first actuator and the second actuator each comprise a body and a rod configured to extend relative to the body, wherein the rods of the first actuator and the second actuator are configured to be extended to engage corresponding surfaces on opposite sides of the cradle;
wherein the cradle and the chassis are configured to rock in unison a limited angular amount relative to the axle; and
wherein opposite ends of the cradle are configured to directly contact corresponding surfaces of the axle when rocking between a first angular orientation and a second angular orientation relative to the axle.