US 12,221,328 B2
Work machine
Paul S. Wolf, Bark River, MI (US)
Assigned to KOMATSU AMERICA CORP., Chicago, IL (US)
Filed by Komatsu America Corp., Chicago, IL (US)
Filed on Mar. 11, 2022, as Appl. No. 17/692,456.
Claims priority of provisional application 63/167,949, filed on Mar. 30, 2021.
Prior Publication US 2022/0315392 A1, Oct. 6, 2022
Int. Cl. B66C 13/54 (2006.01); A01G 23/00 (2006.01); B66C 23/36 (2006.01)
CPC B66C 13/54 (2013.01) [A01G 23/003 (2013.01); B66C 23/36 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A work machine comprising:
a ground propulsion apparatus;
a undercarriage frame supported by the ground propulsion apparatus;
a machine body supported by the undercarriage frame, the machine body including a chassis coupled to the undercarriage frame, a cab supported on the chassis, and a compartment of an engine disposed adjacent to the cab;
a work implement attached to at least one of the undercarriage frame and the machine body; and
a tilt mechanism arranged to tilt the cab relative to the chassis between an upright position and a recumbent transport position, the tilt mechanism including
a lower riser directly and non-movably attached to the chassis adjacent to the compartment of the engine,
an upper riser non-movably attached to the cab, the upper riser being pivotally coupled to the lower riser,
an actuator arranged to move the cab relative to the chassis, and
a lock arranged to selectively lock the cab in the upright position relative to the chassis.